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myGuard 7500GL 802.11g Security ADSL Router
Port Filters
The pre-defined port filter rules for High, Medium and Low security levels are listed. See
Table 1.
Application
Protocol
HTTP(80)
TCP(6)
DNS (53)
UDP(17)
DNS (53)
TCP(6)
FTP(21)
TCP(6)
Telnet(23)
TCP(6)
SMTP(25)
TCP(6)
POP3(110)
TCP(6)
NEWS(119)
TCP(6)
RealAudio
UDP(17)
(7070)
PING
ICMP(1)
H.323(1720)
TCP(6)
T.120(1503)
TCP(6)
SSH(22)
TCP(6)
NTP(123)
UDP(17)
HTTPS(443)
TCP(6)
ICQ (5190)
TCP(6)
Inbound: Internet to LAN
Outbound: LAN to Internet.
Chapter 4:Configuration
Table 1: Pre-defined Port Filter
Port Number
Firewall - High
Start
End
Inbound
80
80
NO
53
53
NO
53
53
NO
21
21
NO
23
23
NO
25
25
NO
110
110
NO
119
119
NO
7070
7070
NO
N/A
N/A
NO
1720
1720
NO
1503
1503
NO
22
22
NO
123
123
NO
443
443
NO
5190
5190
NO
Firewall - Medium
Inbound Outbound
Outbound
NO
YES
NO
YES
NO
YES
NO
NO
NO
NO
NO
YES
NO
YES
NO
NO
NO
YES
NO
YES
NO
NO
NO
NO
NO
NO
NO
YES
NO
NO
NO
NO
Firewall - Low
Inbound
Outbound
NO
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
YES
NO
YES
YES
NO
YES
YES
58
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