Table 7-1 Well-Known Protocol Types; Table 7-2 Well-Known Application Ports - Nortel Web OS Switch Software Application Manual

n
proto: protocol number or name as shown in

Table 7-1 Well-Known Protocol Types

Number
1
2
6
17
89
112
n
sport: TCP/UDP application or source port as shown in
(such as 31000-33000)

Table 7-2 Well-Known Application Ports

Number TCP/UDP
20
21
22
23
25
37
42
43
53
69
70
N
OTE
n
dport: TCP/UDP application or destination port as shown in
range (such as 31000-33000)
n
invert: reverse the filter logic in order to activate the filter whenever the specified condi-
tions are not met.
n
Advanced filtering options such as TCP flags
are also available.
Using these filter criteria, you can create a single filter that blocks external Telnet traffic to
your main server except from a trusted IP address. Another filter could warn you if FTP access
is attempted from a specific IP address. Another filter could redirect all incoming e-mail traffic
to a server where it can be analyzed for spam. The options are nearly endless.
212777-A, February 2002
Protocol Name
icmp
igmp
tcp
udp
ospf
vrrp
Application
ftp-data
ftp
ssh
telnet
smtp
time
name
whois
domain
tftp
gopher
–
The service number specified on the switch must match the service specified on the server.
Table 7-1
Number TCP/UDP
Application
79 finger
80 http
109 pop2
110 pop3
111 sunrpc
119 nntp
123 ntp
143 imap
144 news
161 snmp
162 snmptrap
(page 197) or ICMP message types
Web OS 10.0 Application Guide
Table 7-2, or source port range
Number TCP/UDP
Application
179 bgp
194 irc
220 imap3
389 ldap
443 https
520 rip
554 rtsp
1645, 1812 Radius
1813 Radius Accounting
1985 hsrp
Table 7-2, or destination port
(page
Chapter 7: Filtering
201)
n
171