What is difference between standard and extended access-list
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Answer Posted / gaurav kumar sharma
standard IP access list provides basic packet filtering
abilities, based on the source IP address of a packet only.
As a general rule, apply standard IP access lists close to
the destination network to which you wish to permit or deny
access.Standard IP access lists fall into the numerical
range 1-99
Unlike standard IP access lists (which only allow you to
filter packets based on their source IP address), extended
IP access lists allow a much more granular level of
control. Extended IP access lists allow filtering not only
on source addresses, but also on destination addresses,
protocols, and even applications, based on their port
number. For example, you might choose to permit or deny a
group of hosts from accessing a particular server, limit
access to a telnet server to only a single host, or
similar.Extended IP access lists are identified through
their use of the 100-199 numerical range.
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