Billion Electric Company 8501 Example Predefined Port Filters Rules, Application, Protocol

SHDSL VPN Firewall Bridge/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 being preconfigured.

				Table 1: Predefined Port Filter
Application		Protocol	Port Number		Firewall - Low		Firewall - Medium		Firewall – High
			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	NO	YES
DNS (53)		TCP(6)	53	53	NO	YES	NO	YES	NO	YES
FTP(21)		TCP(6)	21	21	NO	YES	NO	YES	NO	NO
Telnet(23)		TCP(6)	23	23	NO	YES	NO	YES	NO	NO
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(NNTP)		TCP(6)	119	119	NO	YES	NO	YES	NO	NO
(Network	News
Transfer Protocol)
RealAudio/		UDP(17)	7070	7070	YES	YES	YES	YES	NO	NO
RealVideo
(7070)
PING		ICMP(1)	N/A	N/A	NO	YES	NO	YES	NO	YES
H.323(1720)		TCP(6)	1720	1720	YES	YES	NO	YES	NO	NO
T.120(1503)		TCP(6)	1503	1503	YES	YES	NO	YES	NO	NO
SSH(22)		TCP(6)	22	22	NO	YES	NO	YES	NO	NO
NTP	/SNTP	UDP(17)	123	123	NO	YES	NO	YES	NO	YES
(123)
HTTP/HTTP		TCP(6)	8080	8080	NO	YES	NO	YES	N/A	N/A
Proxy
(8080)
HTTPS(443)		TCP(6)	443	443	NO	YES	NO	YES	N/A	N/A
ICQ (5190)		TCP(6)	5190	5190	YES	YES	N/A	N/A	N/A	N/A
MSN (1863)		TCP(6)	1863	1863	YES	YES	N/A	N/A	N/A	N/A

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Chapter 4: Configuration