User's Manual
Arctic GPRS Router
Firmware Version 5.0.7
28
Document Version 1.6
5.2.4
SSH-VPN
Arctic has a VPN client that can be used with the Viola M2M Gateway. For
VPN configuration, please refer to the Viola M2M Gateway User’s Manual.
Figure 19. SSH-VPN Settings
Primary server
Use SSH-VPN? – When set to "Yes" Arctic automatically establishes SSH-
VPN connection to primary Viola M2M Gateway.
Primary interface – Interface used to reach the Viola M2M Gateway server.
Primary server IP – IP address of Viola M2M Gateway SSH-VPN server.
Primary server port – SSH-VPN TCP port on primary server (default 22).
Primary server GW – If other gateway than default route is needed to reach
the Viola M2M Gateway.
Max duration (0=unlimited) – Maximum duration of the VPN connection. On
primary server, should be set to zero. With backup server, after this timeout,
the primary server is tried again.
Connection start timeout (sec) – Time to wait for the connection
establishment.
Connection retry interval (sec) – How often retry the connection.
Connection retry mode – incremental increases the retry inteval on each
connection attempt. Constant delay uses the same delay always.
Hello interval (sec) – Hello packet interval for the VPN. This can be used as
a keepalive message on very critical links.
Hello failure limit – How many hello-packets can be lost before restarting the
connection.
Backup server (optional)
Use backup SSH-VPN? – When set to “Yes”, Arctic will try to establish VPN
connection to backup Viola M2M Gateway, if the primary cannot be reached.
