User guide

Firewall command reference Firewall
4-111
iMG/RG Software Reference Manual (IPNetwork Functions)
Options The following tables describe the default policies enabled in the firewall for each of the
high, medium and low security levels. The tables tell you whether a certain service can be
received in or allowed out by a specific policy. (Y=yes; N=no):
TABLE 4-4 Default Policies Enabled in the Firewall - High Security
High Security Level External< > Internal External< >DMZ DMZ< >Internal
Service Por t In Out In Out In Out
http 80 N Y Y Y Y Y
dns 53 N Y N Y N Y
telnet 23 N N N N N N
smtp 25 N Y Y Y Y Y
pop3 110 N Y Y Y Y Y
nntp 119 N N N N N N
real audio/video 7070 N N N N N N
icmp N/A N Y N Y N Y
H.323 1720 N N N N N N
T.120 1503 N N N N N N
SSH 22 N N N Y N