Filter
Top Products
Billion 400G
Router
Chapter 4: Configuration
49
Example: Predefined Port Filters Rules
The predefined port filter rules for High, Medium and Low security levels are listed. See Table 1.
Note:
Firewall
–
For
Blocked/User-defined
,
you
must
define
and
create
the
port
filter
rules
yourself.
No predefined
rules
are
configured
for
these
modes.
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)
(Network
News
Transfer
Protocol)
TCP(6) 119 119 NO YES NO YES NO NO
RealAudio/
RealVideo
(7070)
UDP(17) 7070 7070 YES YES YES YES NO NO
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
HTTP/HTTP
Proxy
(8080)
TCP(6) 8080 8080 NO YES NO NO NO NO
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