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Prestige 794M User’s Guide
67 Chapter 6 Firewall
The following table lists inbound (Internet to LAN) and outbound (LAN to Internet) traffic
that is allowed or not allowed for the pre-defined port filters. The Prestige uses the pre-defined
port filters when you select a security level in the General Settings screen.
6.4 Packet Filter
The packet filters are applicable when the firewall is enabled in the General Settings screen.
Use the Packet Filter screen to configure port and address filters. Click Configuration,
Firewall and Packet Filters.
Table 30 Pre-defined Port Filter
APPLICATION PROTOCOL
PORT
NUMBER
FIREWALL
HIGH MEDIUM LOW
START END INBOUND OUTBOUND INBOUND OUTBOUND INBOUND OUTBOUND
HTTP(80) TCP(6) 80 80 NO YES NO YES NO YES
DNS (53) UDP(17) 53 53 NO YES NO YES YES YES
DNS (53) TCP(6) 53 53 NO YES NO YES YES YES
FTP(21) TCP(6) 21 21 NO NO NO YES NO YES
Telnet(23) TCP(6) 23 23 NO NO NO YES NO YES
SMTP(25) TCP(6) 25 25 NO YES NO YES NO YES
POP3(110) TCP(6) 110 110 NO YES NO YES NO YES
NEWS(119) TCP(6) 119 119 NO NO NO YES NO YES
RealAudio
(7070)
UDP(17) 7070 7070 NO NO YES YES YES YES
PING ICMP(1) N/A N/A NO YES NO YES NO YES
H.323(1720) TCP(6) 1720 1720 NO NO NO YES YES YES
T.120(1503) TCP(6) 1503 1503 NO NO NO YES YES YES
SSH(22) TCP(6) 22 22 NO NO NO YES YES YES
NTP(123) UDP(17) 123 123 NO YES NO YES NO YES
HTTPS(443) TCP(6) 443 443 NO NO NO YES NO YES
ICQ (5190) TCP(6) 5190 5190 NO NO NO NO YES YES