Hi Mahesh
You configure access-lists to block either outbound or inbound traffic.
In addition to that you can make use of ACLs for other purposes as well.
Below listed are the different types of ACL available.
Standard ACLs
Extended ACLs
Lock and Key (Dynamic ACLs)
IP Named ACLs
Reflexive ACLs
Time-Based ACLs Using Time Ranges
Commented IP ACL Entries
Context-Based Access Control
Authentication Proxy
Turbo ACLs
Distributed Time-Based ACLs
Receive ACLs
Infrastructure Protection ACLs
Transit ACLs
You can refer the below link for more info on the same..
http://www.cisco.com/en/US/products/sw/secursw/ps1018/products_tech_note09186a00800a5b9a.shtml#receiveacl
regds
