167
Putting the parts together
When you display a filter set, its filters are displayed as rows in a table:
The table’s columns correspond to each filter’s attributes:
•
#:
The filter’s priority in the set. Filter number 1, with the highest priority, is first in the table.
•
Fwd:
Shows whether the filter for wards (
Yes
) a packet or discards (
No
) it when there’s a match.
•
Src-IP:
The packet source IP address to match.
•
Src-Mask:
The packet source subnet mask to match.
•
Dst-IP:
The packet destination IP address to match.
•
Dst-Mask:
The packet destination IP address to match.
•
Protocol:
The protocol to match. This can be entered as a number (see the table below) or as TCP or
UDP if those protocols are used.
•
Src Port:
The source por t to match. This is the por t on the sending host that originated the packet.
•
Dst Port:
The destination por t to match. This is the por t on the receiving host for which the packet is
intended.
•
NC:
Indicates No Compare, where specified.
Filtering example #1
Returning to our filtering rule example from above (see
page 165
), look at how a rule is translated into a fil-
ter. Star t with the rule, then fill in the filter’s attributes:
•
The rule you want to implement as a filter is:
“Block all Telnet attempts that originate from the remote host 199.211.211.17.”
Protocol
Number to use
Full name
N/A
0
Ignores protocol type
ICMP
1
Internet Control Message Protocol
TCP
6
Transmission Control Protocol
UDP
17
User Datagram Protocol
Summary of Contents for Netopia 7000
Page 18: ...Administrator s Handbook 18 ...
Page 115: ...115 The screen expands to display the VLAN settings ...
Page 123: ...123 The Home page for a VoIP enabled Gateway with both phone lines registered is shown below ...
Page 192: ...Administrator s Handbook 192 ...
Page 222: ...Administrator s Handbook 222 ...
Page 342: ...Administrator s Handbook 342 ...
Page 366: ...Administrator s Handbook 366 Z Zero Touch 301 ...
Page 368: ...Administrator s Handbook 368 ...
