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173 Defining your security environment
Understanding how protocols affect traffic
Viewing reserved ports
When you create new protocols, make sure that the ports that you use are not already used by other
protocols that you plan to use in the same service groups. Problems may arise if you create a protocol
that uses a port that is already in use by the security gateway.
You can determine whether a port is in use by:
■
Viewing port assignments for predefined protocols
■
Viewing port usage for all protocols
This includes custom protocols.
sunrpc_tcp TCP-based 111
sunrpc_udp UDP-based 111
syslog UDP-based 514
systat TCP-based 11
t120 TCP-based 1503
tacacs TCP-based 49
TCP IP-based n/a
tftp UDP-based 69
tftp_1758 UDP-based 1758
tftp_1758_tcp TCP-based 1758
tftp_1818 UDP-based 1818
tftp_1818_tcp TCP-based 1818
tftp_tcp TCP-based 69
UDP IP-based n/a
udp_encap UDP-based 786
uucp TCP-based 540
visualizer TCP-based 417
wapdgram UDP-based 9200
who UDP-based 513
whois TCP-based 43
x-server0 TCP-based 6000
x-server1 TCP-based 6001
Table 6-2
Supplied protocols with no associated application proxy (Continued)
Protocol name Type Port