Provided by: sstp-client_1.0.17-1build1_amd64
sstpc - SSTP Client
sstpc [<sstp-options>] <hostname> [ppp-options] ...
sstpc establishes the client side of a Virtual Private Network (VPN) using the Secure Socket Tunneling Protocol (SSTP). Use this program to connect to an employer's SSTP based VPN when PPTP and L2TP is not working. By default, sstpc establishes the SSTP call to the SSTP server, and then starts an instance of pppd to manage the data transfer. However, sstpc can also be run as a connection manager within pppd.
The first non-option argument on the sstpc command line must be the host name or IP address of the SSTP server. All long options (starting with "--") are interpreted as sstpc options, and a fatal error occurs if an unrecognised option is used. All command-line arguments which do not start with "-" are interpreted as ppp options, and passed as is to pppd unless --nolaunchpppd is given. --ca-cert Specify the CA certificate used to verify the server with --ca-dir Specify the directory of certificates that contains the CA certificate. If nothing is specified, the system's wide directory is used. --cert-warn Ignore certificate warnings like common name instead of terminating the connection. --host When connecting to an IP address, the host parameter will provide the hostname for http, proxy and tls-ext --ipparam This will help specify the callback socket that pppd will try to connect back to sstpc in order to communciate the MPPE keys as negotiated. The MPPE keys are required to authenticate against the server at the SSL layer. They can be zeroed if no MPPE is negotated. The name is formed based on /tmp/sstpc-<ipparam>. --nolaunchpppd Do not launch pppd but use stdin as the network connection. Use this flag when including sstpc as a pppd connection process using the pty option. See EXAMPLES. --password Specify a password per command line instead of setting it up in a configuration file for pppd in /etc/ppp/peers. --proxy Connect to the SSTP server via a proxy on your network. The syntax is http://[<user>:<pass>@]<domain>:port. --priv-user Specify the privilege separation user to run sstpc --priv-group Specify the privilege separation group to run sstpc --priv-dir Specify the privilege separation directory for the chroot jail to run sstpc --user Specify the username to authenticate to the SSTP server instead of setting it up in a configuration file for pppd in /etc/ppp/peers. --save-server-route This will automatically add and remove a route to the SSTP server. --uuid Specify a UUID for the connection to simplify the server end debugging. --tls-ext This will enable TLS hostname extension. Troubleshooting The following options are available to help troubleshoot sstpc --log-level <level> Set the debug level for debugging the sstpc process. Level can be a value between 0 and 4. --log-syslog Log messages to syslog (default). --log-stderr Log messages to error output --log-stdout Log messages to standard output --log-fileno Include file and line number with the log messages --log-filter Filter the logs by a particular set of files, e.g: sstp-packet,sstp-state --log-ident Specify the identity that will be used when writing logs to e.g. syslog
Connection to a Microsoft Windows RAS Service using SSTP protocol Setup the peer scripts in /etc/ppp/peers, you may start by cloning one of the scripts available in your docs directory, /usr/share/doc/sstp-client, or /usr/local/share/doc/sstp-client. The general content of this file will be close to the following: # Example Content of /etc/ppp/peers/sstp-test remotename sstp-test linkname sstp-test ipparam sstp-test pty "sstpc --ipparam sstp-test --nolaunchpppd sstp-test.yourdomain.com" name eivnaes plugin sstp-pppd-plugin.so sstp-sock /var/run/sstpc/sstpc-sstp-test usepeerdns require-mppe require-mschap-v2 refuse-eap refuse-pap refuse-chap refuse-mschap nobsdcomp nodeflate Note that the chap-secrets file used by pppd must include an entry for domain\\username. For the sstp-test example, the user eivnaes will have a equivalent entry in the /etc/ppp/chap-secrets file. # Secrets for authentication using CHAP # client server secret IP addresses eivnaes * xxxxxx * Starting the sstp-test using the pon script sudo pon sstp-test Invoking sstpc using the the call command sstpc --ipparam sstp-test sstp-test.yourdomain.com call sstp-test-nopty The sstp-test-nopty is a pppd script you need to create in /etc/ppp/peers, and you can clone the example sstp-test above; but you must omit the pty statement in the peers configuration.
This manual page was written by Eivind Naess <firstname.lastname@example.org> SSTPC(8)