Nortel Networks NN43001-315 - Manual (Page 102)

102 CS 1000 on Linux base
Network and firewall
All applications operate behind a network firewall. The firewall starts on
system boot, which invokes the Linux iptables facility to load the firewall
configuration.
Each Linux server supports at least two Ethernet ports; one for ELAN
subnet connectivity and another for TLAN subnet connectivity. By default,
the TLAN is open to the network, while the ELAN is reachable only within
the subnet. The Linux application selects the Ethernet port to use. The
firewall protects both ports. For a listing of Linux base open firewall ports
see
Table 1 "Linux base open firewall ports" (page 102) . For a definition of
ELAN and TLAN see “Network configuration” (page 143) .
Use the CLI command basefirewallconfig to configure the network
firewall. For a list of Nortel Linux base CLI commands see “ Nortel Linux
base CLI commands” (page 139) .
Table 1
Linux base open firewall ports
Protocol Port number or range
TCP 22
UDP 22
UDP 53 (to DNS servers only)
UDP 123
UDP 500
UDP 514
TCP 2100
UDP 33434-33524
Note: The port numbers found in Table 1 "Linux base open firewall
ports" (page 102) apply only to the Linux base. Linux applications can
require different ports. For a list of ports opened for the application see
the appropriate application NTP .
Software reliability
Software monitoring
Nortel Communication Server 1000
Linux Platform Base and Applications Installation and Commissioning
NN43001-315 02.09
29 October 2008
Copyright © 2007–2008 Nortel Networks
.