i m network engineer of an ISP.i want to allow my clients ping any global IP.this a part of my ACL on my router's serial "out port" interface which is connecting to the WAN.my access server is connected to the router's etherner interface. and my client's gateway is access server. when i implement the following ACL on my router's serial out intaerface then i am unable to ping any website or global ip.but i am changing my ACL by changing souce and destination ip address to "any any" then it able to
ping website and IP.
i ve also changed my ACL by keeping source ip to "any" and destination to "src_IP_pool" but still the same problem. pls tell me what would the problem.
! allow pings into the network
access-list 110 permit icmp src_IP_pool any echo
! allow ping responses
access-list 110 permit icmp src_IP_pool any echo-reply
! allow ICMP source-quench
access-list 110 permit icmp src_IP_pool any source-quench
! allow path MTU discovery
access-list 110 permit icmp src_IP_pool any packet-too-big
! allow time-exceeded, which is useful for traceroute
access-list 110 permit icmp src_IP_pool any time-exceeded
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