Hi.
Please help to make friends OpenConnect VPN server and Cisco AnyConnect.
uname -a
Linux server 3.18.11-smp #1 SMP i686 Intel(R) XEON(TM) CPU 1.80GHz
GenuineIntel GNU/Linux
gnutls-3.3.17.1
./configure
--prefix=/usr
--libdir=/usr/lib${LIBDIRSUFFIX}
--sysconfdir=/etc
--localstatedir=/var
--infodir=/usr/info
--mandir=/usr/man
--enable-static=no
--disable-rpath
--with-included-libtasn1
--build=$ARCH-slackware-linux
--host=$ARCH-slackware-linux
ocserv-0.9.2
./configure --prefix=/usr --host=$HOST
LIBGNUTLS_CFLAGS='-I/usr/include' LIBGNUTLS_LIBS='-L/usr/lib -lgnutls'

LIBREADLINE_CFLAGS='-I/usr/include/readline'
LIBREADLINE_LIBS='-L/usr/lib -lreadline -lncurses'
--enable-local-libopts=yes
Cisco AnyConnect Secure Mobility Client Version 3.1.04072
Connection attempt has failed due to server communication errors.
Please retry the connection. :(
ocserv[26214]: main: putting process 26999 to cgroup 'cpuset:test'
ocserv[26214]: main: main-misc.c:837: cannot open:
/sys/fs/cgroup/cpuset/test/tasks
ocserv[26999]: worker: 10.10.10.9:35625 accepted connection
ocserv[26999]: TLS[<5>]: REC[0x80e9008]: Allocating epoch #0
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_constate.c:586
ocserv[26999]: TLS[<5>]: REC[0x80e9008]: Allocating epoch #1
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_buffers.c:1138
ocserv[26999]: TLS[<5>]: REC[0x80e9008]: SSL 3.1 Handshake packet
received. Epoch 0, length: 57
ocserv[26999]: TLS[<5>]: REC[0x80e9008]: Expected Packet Handshake(22)
ocserv[26999]: TLS[<5>]: REC[0x80e9008]: Received Packet Handshake(22)
with length: 57
ocserv[26999]: TLS[<5>]: REC[0x80e9008]: Decrypted Packet[0]
Handshake(22) with length: 57
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: CLIENT HELLO (1) was
received. Length 53[53], frag offset 0, frag length: 53, sequence: 0
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Client's version: 3.1
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_db.c:263
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_extensions.c:158
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_extensions.c:158
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_extensions.c:158
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Received safe renegotiation CS
ocserv[26999]: TLS[<3>]: ASSERT: server_name.c:297
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Requested PK algorithm: RSA
(1) -- ctype: X.509 (1)
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: certificate[0] PK algorithm:
RSA (1) - ctype: X.509 (1)
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_x509.c:1403
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_x509.c:1403
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_ECDSA_AES_128_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_ECDSA_AES_128_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_ECDSA_AES_256_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_ECDSA_AES_256_CBC_SHA384
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_ECDSA_CAMELLIA_128_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_ECDSA_CAMELLIA_256_CBC_SHA384
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_ECDSA_3DES_EDE_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_ECDSA_ARCFOUR_128_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_RSA_AES_128_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_RSA_AES_128_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_RSA_AES_256_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_RSA_AES_256_CBC_SHA384
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_RSA_CAMELLIA_128_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_RSA_CAMELLIA_256_CBC_SHA384
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_RSA_3DES_EDE_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
ECDHE_RSA_ARCFOUR_128_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
RSA_AES_128_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
RSA_AES_128_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
RSA_AES_256_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
RSA_AES_256_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
RSA_CAMELLIA_128_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
RSA_CAMELLIA_128_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
RSA_CAMELLIA_256_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
RSA_CAMELLIA_256_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
RSA_3DES_EDE_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
RSA_ARCFOUR_128_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
RSA_ARCFOUR_128_MD5
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:3370
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_RSA_AES_128_CBC_SHA1
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:3370
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_RSA_AES_128_CBC_SHA256
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:3370
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_RSA_AES_256_CBC_SHA1
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:3370
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_RSA_AES_256_CBC_SHA256
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:3370
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_RSA_CAMELLIA_128_CBC_SHA1
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:3370
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_RSA_CAMELLIA_128_CBC_SHA256
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:3370
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_RSA_CAMELLIA_256_CBC_SHA1
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:3370
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_RSA_CAMELLIA_256_CBC_SHA256
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:3370
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_RSA_3DES_EDE_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_DSS_AES_128_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_DSS_AES_128_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_DSS_AES_256_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_DSS_AES_256_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_DSS_CAMELLIA_128_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_DSS_CAMELLIA_128_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_DSS_CAMELLIA_256_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_DSS_CAMELLIA_256_CBC_SHA256
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_DSS_3DES_EDE_CBC_SHA1
ocserv[26999]: TLS[<4>]: HSK[0x80e9008]: Removing ciphersuite:
DHE_DSS_ARCFOUR_128_SHA1
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:962
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:667
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:2250
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:1463
ocserv[26999]: TLS[<3>]: ASSERT: gnutls_handshake.c:3098
ocserv[26999]: GnuTLS error (at worker-vpn.c:349): Could not negotiate
a supported cipher suite.
ocserv[26214]: main: 10.10.10.9:35625 main-misc.c:506: command socket closed
ocserv[26214]: main: 10.10.10.9:35625 removing client ' with id '26999'
ocserv.conf
# User authentication method. Could be set multiple times and in
# that case all should succeed. To enable multiple methods use
# multiple auth directives. Available options: certificate,
# plain, pam, radius, gssapi.
#
# Note that authentication methods cannot be changed with reload.
# certificate:
# This indicates that all connecting users must present a certificate.
#
# pam[gid-min=1000]:
# This enabled PAM authentication of the user. The gid-min option is used
# by auto-select-group option, in order to select the minimum valid group ID.
#
# plain[passwd=/etc/ocserv/ocpasswd,otp=/etc/ocserv/users.otp]
# The plain option requires specifying a password file which contains
# entries of the following format.
# 'username:groupname1,groupname2:encoded-password'
# One entry must be listed per line, and ?ocpasswd? should be used
# to generate password entries. The ?otp? suboption allows to specify
# an oath password file to be used for one time passwords; the format of
# the file is described in
https://code.google.com/p/mod-authn-otp/wiki/UsersFile
#
# radius[config=/etc/radiusclient/radiusclient.conf,groupconfig=true,nas-identifier=name]:
# The radius option requires specifying freeradius-client configuration
# file. If the groupconfig option is set, then config-per-user will be
overriden,
# and all configuration will be read from radius. That also includes the
# Acct-Interim-Interval, and Session-Timeout values.
#
# The supported atributes for radius configuration are:
# Group-Name, Framed-IPv6-Address, Framed-IPv6-Prefix, DNS-Server-IPv6-Address,
# Framed-IP-Address, Framed-IP-Netmask, MS-Primary-DNS-Server,
MS-Secondary-DNS-Server,
# Acct-Interim-Interval.
#
# gssapi[keytab=/etc/key.tab,require-local-user-map=false,tgt-freshness-time=900,gid-min=1000]
# The gssapi option allows to use authentication methods supported by GSSAPI,
# such as Kerberos tickets with ocserv. It should be best used as an alternative
# to PAM (i.e., have pam in auth and gssapi in enable-auth), to allow users with
# tickets and without tickets to login. The default value for
require-local-user-map
# is true. The ?tgt-freshness-time? if set, it would require the TGT
tickets presented
# to have been issued within the provided number of seconds. That
option is used to
# restrict logins even if the KDC provides long time TGT tickets.
# The gid-min option is used by auto-select-group option, in order to
select the minimum
# valid group ID.
#auth = 'certificate'
#auth = 'pam'
#auth = 'pam[gid-min=1000]'
#auth = 'plain[passwd=/etc/ocserv/ocpasswd]'
#auth = 'radius[config=/etc/radiusclient/radiusclient.conf,groupconfig=true]'
auth = 'plain[/etc/ocpasswd]'
# Specify alternative authentication methods that are sufficient
# for authentication. That is, if set, any of the methods enabled
# will be sufficient to login.
#enable-auth = 'certificate'
#enable-auth = 'gssapi'
#enable-auth = 'gssapi[keytab=/etc/key.tab,require-local-user-map=true,tgt-freshness-time=900]'
# Accounting methods available:
# radius: can be combined with any authentication method, it provides
# radius accounting to available users (see also stats-report-time).
#
# pam: can be combined with any authentication method, it provides
# a validation of the connecting user?s name using PAM. It is
# superfluous to use this method when authentication is already
# PAM.
#
# Only one accounting method can be specified.
#acct = 'radius[config=/etc/radiusclient/radiusclient.conf]'
# Use listen-host to limit to specific IPs or to the IPs of a provided
# hostname.
#listen-host = [IP|HOSTNAME]
# TCP and UDP port number
#tcp-port = 4443
#udp-port = 4443
tcp-port = 443
udp-port = 443
# Accept connections using a socket file. It accepts HTTP
# connections (i.e., without SSL/TLS unlike its TCP counterpart),
# and uses it as the primary channel. That option cannot be
# combined with certificate authentication.
#listen-clear-file = /var/run/ocserv-conn.socket
# The user the worker processes will be run as. It should be
# unique (no other services run as this user).
#run-as-user = nobody
run-as-user = root
#run-as-group = nogroup
run-as-group = root
# The default server directory. Does not require any devices present.
#chroot-dir = /path/to/chroot
# socket file used for IPC with occtl. You only need to set that,
# if you use more than a single servers.
#occtl-socket-file = /var/run/occtl.socket
# socket file used for server IPC (worker - sec-mod), will be appended with .PID
# It must be accessible within the chroot environment (if any), so it is best
# specified relatively to the chroot directory.
socket-file = /var/run/ocserv-socket
# The key and the certificates of the server
# The key may be a file, or any URL supported by GnuTLS (e.g.,
# tpmkey:uuid=xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx;storage=user
# or pkcs11:object=my-vpn-key;object-type=private)
#
# The server-cert file may contain a single certificate, or
# a sorted certificate chain.
#
# There may be multiple server-cert and server-key directives,
# but each key should correspond to the preceding certificate.
#server-cert = /path/to/cert.pem
#server-key = /path/to/key.pem
#server-cert = /etc/server-cert.pem
#server-key = /etc/server-key.pem
server-cert = /etc/ssl/certs/server-cert.pem
server-key = /etc/ssl/private/server-key.pem
# Diffie-Hellman parameters. Only needed if you require support
# for the DHE ciphersuites (by default this server supports ECDHE).
# Can be generated using:
# certtool --generate-dh-params --outfile /path/to/dh.pem
#dh-params = /path/to/dh.pem
# In case PKCS #11, TPM or encrypted keys are used the PINs should be available
# in files. The srk-pin-file is applicable to TPM keys only, and is the
# storage root key.
#pin-file = /path/to/pin.txt
#srk-pin-file = /path/to/srkpin.txt
# The password or PIN needed to unlock the key in server-key file.
# Only needed if the file is encrypted or a PKCS #11 object. This
# is an alternative method to pin-file.
#key-pin = 1234
# The SRK PIN for TPM.
# This is an alternative method to srk-pin-file.
#srk-pin = 1234
# The Certificate Authority that will be used to verify
# client certificates (public keys) if certificate authentication
# is set.
#ca-cert = /path/to/ca.pem
ca-cert = /etc/ssl/certs/ca-cert.pem
### All configuration options below this line are reloaded on a SIGHUP.
### The options above, will remain unchanged.
# Whether to enable seccomp/Linux namespaces worker isolation. That
restricts the number of
# system calls allowed to a worker process, in order to reduce damage from a
# bug in the worker process. It is available on Linux systems at a
performance cost.
# The performance cost is roughly 2% overhead at transfer time (tested
on a Linux 3.17.8).
#isolate-workers = true
isolate-workers = false
# A banner to be displayed on clients
#banner = 'Welcome'
banner = 'Welcome'
# Limit the number of clients. Unset or set to zero for unlimited.
#max-clients = 1024
max-clients = 16
# Limit the number of identical clients (i.e., users connecting
# multiple times). Unset or set to zero for unlimited.
max-same-clients = 3
# When the server has a dynamic DNS address (that may change),
# should set that to true to ask the client to resolve again on
# reconnects.
#listen-host-is-dyndns = true
# When the server receives connections from a proxy, like haproxy
# which supports the proxy protocol, set this to obtain the correct
# client addresses. The proxy protocol (v2) would then be expected in
# the TCP or UNIX socket (not the UDP one).
#listen-proxy-proto = true
# Limit the number of client connections to one every X milliseconds
# (X is the provided value). Set to zero for no limit.
#rate-limit-ms = 100
# Stats report time. The number of seconds after which each
# worker process will report its usage statistics (number of
# bytes transferred etc). This is useful when accounting like
# radius is in use.
#stats-report-time = 360
# Keepalive in seconds
keepalive = 32400
# Dead peer detection in seconds.
# Note that when the client is behind a NAT this value
# needs to be short enough to prevent the NAT disassociating
# his UDP session from the port number. Otherwise the client
# could have his UDP connection stalled, for several minutes.
#dpd = 90
dpd = 1900
# Dead peer detection for mobile clients. That needs to
# be higher to prevent such clients being awaken too
# often by the DPD messages, and save battery.
# The mobile clients are distinguished from the header
# ?X-AnyConnect-Identifier-DeviceType?.
mobile-dpd = 1800
# MTU discovery (DPD must be enabled)
# If set, this forces all UDP packets to carry the don?t fragment
# (DF) bit.
#try-mtu-discovery = false
try-mtu-discovery = true
# The revocation list of the certificates issued by the ?ca-cert? above.
# See the manual to generate an empty CRL initially. The CRL will be reloaded
# periodically when ocserv detects a change in the file. To force a reload use
# SIGHUP.
#crl = /path/to/crl.pem
# If you have a certificate from a CA that provides an OCSP
# service you may provide a fresh OCSP status response within
# the TLS handshake. That will prevent the client from connecting
# independently on the OCSP server.
# You can update this response periodically using:
# ocsptool --ask --load-cert=your_cert --load-issuer=your_ca --outfile response
# Make sure that you replace the following file in an atomic way.
#ocsp-response = /path/to/ocsp.der
# The object identifier that will be used to read the user ID in the client
# certificate. The object identifier should be part of the certificate?s DN
# Useful OIDs are:
# CN = 2.5.4.3, UID = 0.9.2342.19200300.100.1.1
#cert-user-oid = 0.9.2342.19200300.100.1.1
# The object identifier that will be used to read the user group in the
# client certificate. The object identifier should be part of the certificate?s
# DN. Useful OIDs are:
# OU (organizational unit) = 2.5.4.11
#cert-group-oid = 2.5.4.11
# Uncomment this to enable compression negotiation (LZS, LZ4).
#compression = true
# Set the minimum size under which a packet will not be compressed.
# That is to allow low-latency for VoIP packets. The default size
# is 256 bytes. Modify it if the clients typically use compression
# as well of VoIP with codecs that exceed the default value.
#no-compress-limit = 256
# GnuTLS priority string; note that SSL 3.0 is disabled by default
# as there are no openconnect (and possibly anyconnect clients) using
# that protocol. The string below does not enforce perfect forward
# secrecy, in order to be compatible with legacy clients.
#
# Note that the most performant ciphersuites are the moment are the ones
# involving AES-GCM. These are very fast in x86 and x86-64 hardware, and
# in addition require no padding, thus taking full advantage of the MTU.
# For that to be taken advantage of, the openconnect client must be
# used, and the server must be compiled against GnuTLS 3.2.7 or later.
# Use 'gnutls-cli --benchmark-tls-ciphers', to see the performance
# difference with AES_128_CBC_SHA1 (the default for anyconnect clients)
# in your system.
#tls-priorities = 'NORMAL:%SERVER_PRECEDENCE:%COMPAT:-VERS-SSL3.0'
tls-priorities = 'NORMAL:%SERVER_PRECEDENCE:%COMPAT'
# More combinations in priority strings are available, check
# http://gnutls.org/manual/html_node/Priority-Strings.html
# E.g., the string below enforces perfect forward secrecy (PFS)
# on the main channel.
#tls-priorities =
'NORMAL:%SERVER_PRECEDENCE:%COMPAT:-RSA:-VERS-SSL3.0:-ARCFOUR-128'
# The time (in seconds) that a client is allowed to stay connected prior
# to authentication
#auth-timeout = 40
auth-timeout = 4000
# The time (in seconds) that a client is allowed to stay idle (no traffic)
# before being disconnected. Unset to disable.
#idle-timeout = 1200
# The time (in seconds) that a client is allowed to stay connected
# Unset to disable.
#session-timeout = 86400
# The time (in seconds) that a mobile client is allowed to stay idle (no
# traffic) before being disconnected. Unset to disable.
#mobile-idle-timeout = 2400
# The time (in seconds) that a client is not allowed to reconnect after
# a failed authentication attempt.
min-reauth-time = 120
# Banning clients in ocserv works with a point system. IP addresses
# that get a score over that configured number are banned for
# min-reauth-time seconds. By default a wrong password attempt is 10 points,
# a KKDCP POST is 1 point, and a connection is 1 point. Note that
# due to difference processes being involved the count of points
# will not be real-time precise.
#
# Score banning cannot be reliably used when receiving proxied connections
# locally from an HTTP server (i.e., when listen-clear-file is used).
#
# Set to zero to disable.
#max-ban-score = 50
# The time (in seconds) that all score kept for a client is reset.
#ban-reset-time = 300
# In case you?d like to change the default points.
#ban-points-wrong-password = 10
#ban-points-connection = 1
#ban-points-kkdcp = 1
# Cookie timeout (in seconds)
# Once a client is authenticated he?s provided a cookie with
# which he can reconnect. That cookie will be invalided if not
# used within this timeout value. On a user disconnection, that
# cookie will also be active for this time amount prior to be
# invalid. That should allow a reasonable amount of time for roaming
# between different networks.
#cookie-timeout = 300
cookie-timeout = 86400000
# Cookie rekey time (in seconds)
# The time after which the key used to encrypt cookies will be
# refreshed. After this time the previous key will also be valid
# for verification. It is recommended not to modify the default
# value.
#cookie-rekey-time = 14400
#cookie-rekey-time = 172800
# If this is enabled (not recommended) the cookies will stay
# valid even after a user manually disconnects, and until they
# expire. This may improve roaming with some broken clients.
#persistent-cookies = true
# Whether roaming is allowed, i.e., if true a cookie is
# restricted to a single IP address and cannot be re-used
# from a different IP.
deny-roaming = false
# ReKey time (in seconds)
# ocserv will ask the client to refresh keys periodically once
# this amount of seconds is elapsed. Set to zero to disable (note
# that, some clients fail if rekey is disabled).
rekey-time = 172800
# ReKey method
# Valid options: ssl, new-tunnel
# ssl: Will perform an efficient rehandshake on the channel allowing
# a seamless connection during rekey.
# new-tunnel: Will instruct the client to discard and re-establish the channel.
# Use this option only if the connecting clients have issues with the ssl
# option.
rekey-method = ssl
# Script to call when a client connects and obtains an IP.
# The following parameters are passed on the environment.
# REASON, USERNAME, GROUPNAME, HOSTNAME (the hostname selected by client),
# DEVICE, IP_REAL (the real IP of the client), IP_REAL_LOCAL (the local
# interface IP the client connected), IP_LOCAL (the local IP
# in the P-t-P connection), IP_REMOTE (the VPN IP of the client),
# IPV6_LOCAL (the IPv6 local address if there are both IPv4 and IPv6
# assigned), IPV6_REMOTE (the IPv6 remote address), IPV6_PREFIX, and
# ID (a unique numeric ID); REASON may be 'connect' or 'disconnect'.
# In addition the following variables OCSERV_ROUTES (the applied routes for this
# client), OCSERV_NO_ROUTES, OCSERV_DNS (the DNS servers for this client),
# will contain a space separated list of routes or DNS servers. A version
# of these variables with the 4 or 6 suffix will contain only the IPv4 or
# IPv6 values.
# The disconnect script will receive the additional values: STATS_BYTES_IN,
# STATS_BYTES_OUT, STATS_DURATION that contain a 64-bit counter of the bytes
# output from the tun device, and the duration of the session in seconds.
#connect-script = /usr/bin/myscript
#disconnect-script = /usr/bin/myscript
# UTMP
# Register the connected clients to utmp. This will allow viewing
# the connected clients using the command ?who?.
#use-utmp = true
use-utmp = true
# Whether to enable support for the occtl tool (i.e., either through D-BUS,
# or via a unix socket).
use-occtl = true
# PID file. It can be overriden in the command line.
pid-file = /var/run/ocserv.pid
# Set the protocol-defined priority (SO_PRIORITY) for packets to
# be sent. That is a number from 0 to 6 with 0 being the lowest
# priority. Alternatively this can be used to set the IP Type-
# Of-Service, by setting it to a hexadecimal number (e.g., 0x20).
# This can be set per user/group or globally.
#net-priority = 3
net-priority = 5
# Set the VPN worker process into a specific cgroup. This is Linux
# specific and can be set per user/group or globally.
#cgroup = 'cpuset,cpu:test'
cgroup = 'cpuset,cpu:test'
#
# Network settings
#
# The name to use for the tun device
device = vpns
# Whether the generated IPs will be predictable, i.e., IP stays the
# same for the same user when possible.
predictable-ips = true
# The default domain to be advertised
default-domain = vpkits.vitebsk.by
# The pool of addresses that leases will be given from. If the leases
# are given via Radius, or via the explicit-ip? per-user config option then
# these network values should contain a network with at least a single
# address that will remain under the full control of ocserv (that is
# to be able to assign the local part of the tun device address).
# Note that, you could use addresses from a subnet of your LAN network if you
# enable proxy arp in the LAN interface (see
http://infradead.org/ocserv/recipes-ocserv-pseudo-bridge.html);
# in that case it is recommended to set ping-leases to true.
#ipv4-network = 192.168.1.0
#ipv4-netmask = 255.255.255.0
ipv4-network = 10.7.7.0
ipv4-netmask = 255.255.255.0
# An alternative way of specifying the network:
#ipv4-network = 192.168.1.0/24
# The IPv6 subnet that leases will be given from.
ipv6-network = fda9:4efe:7e3b:03ea::/48
# Specify the size of the network to provide to clients. It is
# generally recommended to provide clients with a /64 network in
# IPv6, but any subnet may be specified. To provide clients only
# with a single IP use the prefix 128.
#ipv6-subnet-prefix = 128
#ipv6-subnet-prefix = 64
# Whether to tunnel all DNS queries via the VPN. This is the default
# when a default route is set.
#tunnel-all-dns = true
# The advertized DNS server. Use multiple lines for
# multiple servers.
# dns = fc00::4be0
#dns = 192.168.1.2
dns = 8.8.8.8
dns = 8.8.4.4
# The NBNS server (if any)
#nbns = 192.168.1.3
# The domains over which the provided DNS should be used. Use
# multiple lines for multiple domains.
#split-dns = example.com
# Prior to leasing any IP from the pool ping it to verify that
# it is not in use by another (unrelated to this server) host.
# Only set to true, if there can be occupied addresses in the
# IP range for leases.
ping-leases = false
# Use this option to enforce an MTU value to the incoming
# connections. Unset to use the default MTU of the TUN device.
#mtu = 1420
# Unset to enable bandwidth restrictions (in bytes/sec). The
# setting here is global, but can also be set per user or per group.
#rx-data-per-sec = 40000
#tx-data-per-sec = 40000
# The number of packets (of MTU size) that are available in
# the output buffer. The default is low to improve latency.
# Setting it higher will improve throughput.
#output-buffer = 10
# Routes to be forwarded to the client. If you need the
# client to forward routes to the server, you may use the
# config-per-user/group or even connect and disconnect scripts.
#
# To set the server as the default gateway for the client just
# comment out all routes from the server, or use the special keyword
# ?default?.
## Comment out the route of the field, which means that
#all traffic is sent through the VPN
route = 10.7.7.0/255.255.255.0
#route = 192.168.0.0/255.255.0.0
#route = fef4:db8:1000:1001::/64
# Subsets of the routes above that will not be routed by
# the server. Note, that this may currently be not be supported
# by openconnect clients.
no-route = 192.168.5.0/255.255.255.0
# If set, the script /usr/bin/ocserv-fw will be called to restrict
# the user to its allowed routes and prevent him from accessing
# any other routes. In case of defaultroute, the no-routes are restricted.
# All the routes applied by ocserv can be reverted using /usr/bin/ocserv-fw
# --removeall. This option can be set globally or in the per-user configuration.
#restrict-user-to-routes = true
# When set to true, all client?s iroutes are made visible to all
# connecting clients except for the ones offering them. This option
# only makes sense if config-per-user is set.
#expose-iroutes = true
# Groups that a client is allowed to select from.
# A client may belong in multiple groups, and in certain use-cases
# it is needed to switch between them. For these cases the client can
# select prior to authentication. Add multiple entries for multiple groups.
# The group may be followed by a user-friendly name in brackets.
#select-group = group1
#select-group = group2[My special group]
# The name of the (virtual) group that if selected it would assign the user
# to its default group.
#default-select-group = DEFAULT
# Instead of specifying manually all the allowed groups, you may instruct
# ocserv to scan all available groups and include the full list.
#auto-select-group = true
auto-select-group = true
# Configuration files that will be applied per user connection or
# per group. Each file name on these directories must match the username
# or the groupname.
# The options allowed in the configuration files are dns, nbns,
# ipv?-network, ipv4-netmask, rx/tx-per-sec, iroute, route, no-route,
# explicit-ipv4, explicit-ipv6, net-priority, deny-roaming, no-udp,
# keepalive, dpd, mobile-dpd, max-same-clients, tunnel-all-dns,
# restrict-user-to-routes, user-profile, cgroup, stats-report-time,
# and session-timeout.
#
# Note that the ?iroute? option allows to add routes on the server
# based on a user or group. The syntax depends on the input accepted
# by the commands route-add-cmd and route-del-cmd (see below). The no-udp
# is a boolean option (e.g., no-udp = true), and will prevent a UDP session
# for that specific user or group. Note also, that, any DNS or NBNS servers
# present will overwrite the global ones, while any routes or no-routes set
# will be appended to the default set.
#
# Also explicit addresses, are only allowed when they are odd. In that
# case the next even address will be used as the remote address (in PtP).
#config-per-user = /etc/ocserv/config-per-user/
#config-per-group = /etc/ocserv/config-per-group/
# When config-per-xxx is specified and there is no group or user that
# matches, then utilize the following configuration.
#default-user-config = /etc/ocserv/defaults/user.conf
#default-group-config = /etc/ocserv/defaults/group.conf
# The system command to use to setup a route. %{R} will be replaced with the
# route/mask, %{RI} with the route in CIDR format, and %{D} with the
(tun) device.
#
# The following example is from linux systems. %{R} should be something
# like 192.168.2.0/255.255.255.0 and %{RI} 192.168.2.0/24 (the
argument of iroute).
#route-add-cmd = 'ip route add %{R} dev %{D}'
#route-del-cmd = 'ip route delete %{R} dev %{D}'
route-add-cmd = 'ip route add %{R} dev %{D}'
route-del-cmd = 'ip route delete %{R} dev %{D}'
# This option allows to forward a proxy. The special keywords ?%{U}?
# and ?%{G}?, if present will be replaced by the username and group name.
#proxy-url = http://example.com/
#proxy-url = http://example.com/%{U}/
# This option allows you to specify a URL location where a client can
# post using MS-KKDCP, and the message will be forwarded to the provided
# KDC server. That is a translation URL between HTTP and Kerberos.
# You can have the same path used for multiple realms. To authenticate
# in client side, in MIT kerberos you?ll need to add in krb5.conf:
# EXAMPLE.COM = {
# kdc = https://ocserv.example.com/KdcProxy
# http_anchors = FILE:/etc/ocserv-ca.pem
# }
# This option is available if ocserv is compiled with GSSAPI support.
#kkdcp = SERVER-PATH KERBEROS-REALM ***@SERVER:PORT
#kkdcp = /KdcProxy KERBEROS.REALM ***@127.0.0.1:88
#kkdcp = /KdcProxy KERBEROS.REALM ***@127.0.0.1:88
#kkdcp = /KdcProxy KERBEROS.REALM tcp@[::1]:88
#
# The following options are for (experimental) AnyConnect client
# compatibility.
# This option must be set to true to support legacy CISCO clients.
# A side effect of this option is that it will no longer be required
# for clients to present their certificate on every connection.
# That is they may resume a cookie without presenting a certificate
# (when certificate authentication is used).
cisco-client-compat = true
# Client profile xml. A sample file exists in doc/profile.xml.
# It is required by some of the CISCO clients.
# This file must be accessible from inside the worker?s chroot.
# Note that enabling this option is not recommended as it will allow
# the worker processes to open arbitrary files (when isolate-workers is
# set to true).
#user-profile = /path/to/file.xml
user-profile = /etc/ocserv/profile.xml
#Advanced options
# Option to allow sending arbitrary custom headers to the client after
# authentication and prior to VPN tunnel establishment. You shouldn?t
# need to use this option normally; if you do and you think that
# this may help others, please send your settings and reason to
# the openconnect mailing list. The special keywords ?%{U}?
# and ?%{G}?, if present will be replaced by the username and group name.
#custom-header = 'X-My-Header: hi there'
custom-header = 'X-DTLS-MTU: 1200'
custom-header = 'X-CSTP-MTU: 1200'
createsectificate.sh
#!/bin/bash
#! /usr/bin/expect -f
#Generated CA certificate
certtool --generate-privkey --outfile ca-key.pem
cat << _EOF_ >ca.tmpl
cn = 'company VPN'
state = 'City'
country = CH
organization = 'ORG'
serial = 1
expiration_days = 999
email = '***@gmail.com'
ca
signing_key
encryption_key
ipsec_ike_key
cert_signing_key
crl_signing_key
_EOF_
certtool --generate-self-signed --load-privkey ca-key.pem --template
ca.tmpl --outfile ca-cert.pem
#Generate local server certificate
certtool --generate-privkey --outfile server-key.pem
cat << _EOF_ >server.tmpl
cn = 'www.company.org'
organization = 'ORG'
email = '***@gmail.com'
dns_name = 'ns.org.com'
country = CH
state = 'City'
serial = 2
#expiration_days = -1
expiration_days = 999
signing_key
encryption_key #only if the generated key is an RSA one
tls_www_server
ipsec_ike_key
time_stamping_key
_EOF_
certtool --generate-certificate --load-privkey server-key.pem
--load-ca-certificate ca-cert.pem --load-ca-privkey ca-key.pem
--template server.tmpl --outfile server-cert.pem
#Generate a client certificate
certtool --generate-privkey --outfile user-key.pem
cat << _EOF_> user.tmpl
cn = 'org_client'
o = 'ORG'
email = '***@gmail.com'
dns_name = 'ns.org.com'
country = CH
state = 'City'
unit = 'admins'
serial = 3
expiration_days = 999
signing_key
encryption_key #only if the generated key is an RSA one
tls_www_client
ipsec_ike_key
time_stamping_key
_EOF_
certtool --generate-certificate --load-privkey user-key.pem
--load-ca-certificate ca-cert.pem --load-ca-privkey ca-key.pem
--template user.tmpl --outfile user-cert.pem
openssl pkcs12 -export -inkey user-key.pem -in user-cert.pem -name
'user VPN Client Cert' -certfile ca-cert.pem -out user.cert.p12
cp ./ca-cert.pem /etc/ssl/certs
cp ./ca-key.pem /etc/ssl/private
cp ./ca-cert.pem /opt/.cisco/certificates/ca
cp ./ca-key.pem /opt/.cisco/certificates/ca
cp ./server-cert.pem /etc/ssl/certs
cp ./server-key.pem /etc/ssl/private
ocpasswd root -c /etc/ocpasswd
***@server:/etc/ocserv# openssl s_client -connect 10.10.10.9:443
CONNECTED(00000003)
depth=0 CN = xxxxxx, O = xxxx
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 CN = xxxxxx, O = xxx
verify error:num=27:certificate not trusted
verify return:1
depth=0 CN = xxxxxx, O = xxx
verify error:num=21:unable to verify the first certificate
verify return:1
ocserv -f -d 9999 --config=/etc/ocserv/ocserv.conf
..
ocserv[31120]: TLS[<9>]: INT: CLIENT WRITE KEY [16]:
8a13e15928cf46222d6fc4b45d3bed07
ocserv[31120]: TLS[<9>]: INT: SERVER WRITE KEY [16]:
d4ea01fd3adbc39ff44ec3f963ba7aea
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: Epoch #1 ready
ocserv[31120]: TLS[<4>]: HSK[0x94fd008]: Cipher Suite:
ECDHE_RSA_AES_128_GCM_SHA256
ocserv[31120]: TLS[<3>]: ASSERT: gnutls_buffers.c:1138
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: SSL 3.3 Handshake packet
received. Epoch 0, length: 40
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: Expected Packet Handshake(22)
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: Received Packet Handshake(22)
with length: 40
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: Decrypted Packet[0]
Handshake(22) with length: 16
ocserv[31120]: TLS[<4>]: HSK[0x94fd008]: FINISHED (20) was received.
Length 12[12], frag offset 0, frag length: 12, sequence: 0
ocserv[31120]: TLS[<4>]: HSK[0x94fd008]: recording tls-unique CB (recv)
ocserv[31120]: TLS[<4>]: REC[0x94fd008]: Sent ChangeCipherSpec
ocserv[31120]: TLS[<4>]: HSK[0x94fd008]: Cipher Suite:
ECDHE_RSA_AES_128_GCM_SHA256
ocserv[31120]: TLS[<4>]: HSK[0x94fd008]: Initializing internal [write]
cipher sessions
ocserv[31120]: TLS[<4>]: HSK[0x94fd008]: FINISHED was queued [16 bytes]
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: Preparing Packet
ChangeCipherSpec(20) with length: 1 and min pad: 0
ocserv[31120]: TLS[<9>]: ENC[0x94fd008]: cipher: NULL, MAC: MAC-NULL, Epoch: 0
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: Sent Packet[5]
ChangeCipherSpec(20) in epoch 0 and length: 6
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: Preparing Packet
Handshake(22) with length: 16 and min pad: 0
ocserv[31120]: TLS[<9>]: ENC[0x94fd008]: cipher: AES-128-GCM, MAC:
AEAD, Epoch: 1
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: Sent Packet[1] Handshake(22)
in epoch 1 and length: 45
ocserv[31120]: worker: 10.10.10.9:35633 sending message 'resume data
store request' to main
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: Start of epoch cleanup
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: Epoch #0 freed
ocserv[31120]: TLS[<5>]: REC[0x94fd008]: End of epoch cleanup
ocserv[31120]: worker: 10.10.10.9:35633 TLS handshake completed
ocserv[31058]: main: 10.10.10.9:35633 main received message 'resume
data store request' of 337 bytes
ocserv[31058]: main: 10.10.10.9:35633 TLS session DB storing
cee0f3c16d0a6f3c0536f7009afcdc4b6aad149258310b24a5dedaaca0294191
Yours faithfully Sergio.