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Example: Predefined Port Filters Rules
The predefined port filter rules for High, Medium and Low security levels are listed. See Table 1.
Firewall – For Blocked/User-defined, you must define and create the port filter rules yourself. No
Note:
predefined rules are configured for these modes.
Application
Protocol
HTTP(80)
TCP(6)
DNS (53)
UDP(17) 53
DNS (53)
TCP(6)
FTP(21)
TCP(6)
Telnet(23)
TCP(6)
SMTP(25)
TCP(6)
POP3(110)
TCP(6)
NEWS(NNTP)
TCP(6)
(Network
News
Transfer Protocol)
RealAudio/
RealVideo
UDP(17) 7070 7070
(7070)
PING
ICMP(1) N/A
H.323(1720)
TCP(6)
T.120(1503)
TCP(6)
SSH(22)
TCP(6)
NTP /SNTP
UDP(17) 123
HTTP/HTTP
Proxy
TCP(6)
(8080)
HTTPS(443)
TCP(6)
ICQ (5190)
TCP(6)
MSN (1863)
TCP(6)
MSN (7001)
UDP(17) 7001 7001 YES
MSN VIDEO
TCP(6)
(9000)
Inbound: Internet to LAN; Outbound: LAN to Internet.
YES: Allowed; NO: Blocked; N/A: Not Applicable
Chapter 4: Configuration
Table 1: Predefined Port Filter
Port Number
Firewall - Low
Start
End
Inbound Outbound Inbound Outbound Inbound Outbound
80
80
NO
53
NO
53
53
NO
21
21
NO
23
23
NO
25
25
NO
110
110
NO
119
119
NO
YES
N/A
NO
1720 1720
YES
1503 1503
YES
22
22
NO
123
NO
8080 8080
NO
443
443
NO
5190 5190
YES
1863 1863
YES
YES
9000 9000 NO
YES
Firewall - Medium
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
YES
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
NO
NO
YES
NO
YES
YES
N/A
N/A
YES
N/A
N/A
N/A
N/A
N/A
N/A
Billion 800VGT Router
Firewall – High
NO
YES
NO
YES
NO
YES
NO
NO
NO
NO
NO
YES
NO
YES
NO
NO
NO
NO
NO
YES
NO
NO
NO
NO
NO
NO
NO
YES
NO
NO
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
59
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