Port number comparisons – Netopia R5300 User Manual
Page 186
13-8 User’s Reference Guide
By matching on a por t number, a filter can be applied to selected TCP or UDP ser vices, such as Telnet, FTP, and
World Wide Web. The following tables show a few common ser vices and their associated por t numbers.
P
P
P
Po
o
o
orrrrtttt n
n
n
nu
u
u
um
m
m
mb
b
b
bee
e
errrr cccco
o
o
om
m
m
mp
p
p
paa
a
arrrriiiisssso
o
o
on
n
n
nssss
A filter can also use a comparison option to evaluate a packet’s source or destination por t number. The
comparison options are:
No Compare: No comparison of the por t number specified in the filter with the packet’s por t number.
Not Equal To: For the filter to match, the packet’s por t number cannot equal the por t number specified in the
filter.
Less Than: For the filter to match, the packet’s por t number must be less than the por t number specified in the
filter.
Less Than or Equal: For the filter to match, the packet’s por t number must be less than or equal to the por t
number specified in the filter.
Equal: For the filter to match, the packet’s por t number must equal the por t number specified in the filter.
Greater Than: For the filter to match, the packet’s por t number must be greater than the por t number specified
in the filter.
Greater Than or Equal: For the filter to match, the packet’s por t number must be greater than or equal to the
por t number specified in the filter.
Internet service
TCP port
Internet service
TCP port
FTP
20/21
Finger
79
Telnet
23
World Wide Web
80
SMTP (mail)
25
News
144
Gopher
70
rlogin
513
Internet service
UDP port
Internet service
UDP port
Who Is
43
AppleTalk Routing
Maintenance (at-r tmp)
202
World Wide Web
80
AppleTalk Name Binding
(at-nbp)
202
SNMP
161
AURP (AppleTalk)
387
TFTP
69
who
513