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Extended Access List

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jamesjlee50

Programmer
Joined
Aug 10, 2004
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5
Location
US
In an extended Access List, what four parameters can be filtered?
 
Hope this helps

Access-list [list number] [permit | deny] [protocol] [source address] [source-mask] [destination address] [destination-mask] [operator] [port]

Example

Access-list 100 permit IP 10.0.0.0 0.255.255.255 eq 80

This allows any IP address in the 10.0.0.0 network to get out to the internet using HTTP

Here is a list of the operators

eq=equal
lt=less than
gt=greater than
neq=not equal
range=a range of ports; you must specify two different port numbers
est=established connections


You can also do the following

Access-list 100 permit IP 10.0.0.0 0.255.255.255 any

This allows the 10's network to go anywhere and not just the web. I hope this helped.
 
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