Viola Systems Arctic IEC-104 User Manual page 22

Monitor
Monitor is used for GPRS and VPN connection checking. If connection to the selected IP
address is lost, the connection is restarted. Monitor uses ICMP echo (ping) packets to check
the connection.
ICMP Echo sending – Selects if the monitor is enabled.
Interval (sec) – Determines how often the connection is checked by sending ICMP echo
packets.
Reply timeout (secs) – The waiting time for reply packets.
Retries timeout (secs) – The number of tries before connections are restarted.
Target IP address – The host IP address to which echo packets are sent to.
Secondary target IP address – The secondary host IP address to which ICMP echo packets
are to be sent if the sending to primary target host IP address fails.
Routing
These parameters are used to configure routing settings:
Act as router – Enables IP forwarding between interfaces.
Use Proxy ARP – Enables proxy ARP. May be used with Viola M2M Gateway VPN.
S-NAT
These parameters are used to configure S-NAT (source network address translation) settings.
When enabled, private IP address used in local LAN is changed to GPRS interface IP
address.
From IP – Only S-NAT connections from the defined IP address are accepted. If defined with
wildcard (0/0), all IP addresses are handled the same way (only S-NAT connections are
allowed).
D-NAT
These parameters are used to configure D-NAT (destination network address translation)
settings. When enabled, packets coming to defined GPRS interface port are forwarded to
local IP address.
Source IP – D-NAT only connections coming from IP. Wildcard 0/0 means all IP addresses
are D-NATted.
Protocol – Chooses which protocol is port forwarded. If "ANY" is chosen, other parametes
are disregarded.
Dest.port – Chooses which GPRS interface is port forwarded to local Ethernet.
Redirect to IP – Chooses where port forwarding is done to.
Redir. port – Chooses which port port forwarding goes to.
Arctic IEC-104 Gateway 22
User's Manual
Viola Systems Ltd.