---
name: "sstpc"
section: "8"
platform: "linux"
package: "sstp-client"
version: "1:1.0.20-3"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/sstpc"
---

# sstpc(8)

SSTP Client

## NAME

sstpc - SSTP Client

## SYNOPSIS

**sstpc** *\[\<sstp-options\>\] \<hostname\> \[ppp-options\] ...*

## DESCRIPTION

**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**.

## OPTIONS

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 communicate 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 negotiated. 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

## EXAMPLES

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.

  ## SEE ALSO

[*pppd*(8)](/pppd/8.md)

## AUTHOR

This manual page was written by Eivind Naess \<enaess@yahoo.com\>