BT Micro - Page 144

BT Micro Owner’s Manual
144
Incoming packets are checked against existing NAT rules or
Firewall filters, IP addresses are evaluated and detailed packet
analysis is performed. If necessary, the content of a packet is
modified, and if a secondary port is required, the ALG will open
one. The ALG for each application does not require any
configuration.
ALG support is provided for the following applications.
Application TCP Port UDP Port
AIM (AOL Instant Messenger) 5190 N/A
FTP (File Transfer Protocol) 21 N/A
IKE (Internet Key Exchange) N/A 500
ILS (Internet Locator Service) 389 (+1002) N/A
MSN (Microsoft Networks) 1863 N/A
PPTP (Point-to-Point Tunnelling
Protocol)
1723 N/A
RSVP (Resource Reservation
Protocol)
N/A N/A
L2TP (Layer 2 Tunnelling Protocol) N/A 1701
SIP (Session Initiation Protocol) 5060 5060