Billion Electric Company 7402VL Example Predefined Port Filters Rules, Application, Protocol

VoIP/(802.11g) ADSL2+ Router

Example: Predefined Port Filters Rules

The predefined port filter rules for High, Medium and Low security levels are listed. See Table 1.

(Note: Firewall – All Blocked/User-defined, you must define and create the port filter rules yourself. No predefined rule is set)

			Table 1: Predefined Port Filter
Application	Protocol	Port Number		Firewall - High		Firewall - Medium		Firewall – 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	UDP(17)	7070	7070	NO	NO	YES	YES	YES	YES
(7070)
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
Inbound: Internet to LAN
Outbound: LAN to Internet.

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Chapter 4: Configuration