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Allow icmp only specific ip address from outside

Salman.Baig
Level 1
Level 1

still all icmp traffic block outside of the network 


access-list 101 deny icmp any any echo
access-list 101 permit ip any any


interface FastEthernet0/0
ip address 192.168.2.92 255.255.255.0
ip access-group 101 in

 

still icmp block on wan interface any any  i need only 1 specific ip to allow ping icmp outside of the network means wan side is it possible if yes please ?

3 Replies 3

Seb Rupik
VIP Alumni
VIP Alumni

Hi there,

If I understand you correctly, you need to specifiy the permited host before the any any deny:

!
access-list 101 permit icmp host <specific_host> any echo
access-list 101 deny icmp any any echo
access-list 101 permit ip any any
!

cheers,

Seb.

 

Jon Marshall
Hall of Fame
Hall of Fame

 

Do you want to allow a host to ping from outside to the inside of your network ? 

 

Jon

Please Try as below:

 


access-list 102 permit icmp host X.X.X.X any

access-list 102 permit icmp host X.X.X.X any echo-reply

access-list 102 permit icmp host X.X.X.X any echo

access-list 102 deny icmp any any

access-list 102 permit ip any any

 

interface fa0/0
ip access-group 102 in

 

Note: x.x.x.x is your specific IP

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