Скачать или смотреть Free CCNA In Hindi | Chapter35-How to Configure Extended Name ACL?

Extended Access-list –
It is one of the types of Access-list which is mostly used as it can distinguish IP traffic therefore the whole traffic will not be permitted or denied like in standard access-list. These are the ACL that uses both source and destination IP addresses and also the port numbers to distinguish IP traffic. In this type of ACL, we can also mention which IP traffic should be allowed or denied. These use range 100-199 and 2000-2699.

Features –


1.Extended access-list is generally applied close to the source but not always.
2. In the Extended access list, packet filtering takes place on the basis of source IP address, destination IP address, port numbers.
3. In an extended access list, particular services will be permitted or denied.
4. Extended ACL is created from 100 – 199 & extended range 2000 – 2699.
5. If numbered with extended Access-list is used then remember rules can’t be deleted. If one of the rules is deleted then the whole access list will be deleted.
6. If named with extended Access-list is used then we have the flexibility to delete a rule from the access list.
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