I have an application where I need a small router that can be configured to route ping echo requests (protocol ICMP major code 8) from the WAN side to a device on the LAN side. Please note that the ICMP protocol does not have port numbers, so port forwarding will not work. Can I ge some suggestions on router that can handle this?
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Unfortunately I have been down that path. This is such a specialized issue, normal sales reps don't even know what I am talking about. For that reason I am trying get an answer via a technical channel. Cisco does not make that easy.
On an ASA I think you can accomplish this. When I put in a syntax to allow icmp I get these options:
" access-list outside extended permit icmp any any ?"
configure mode commands/options: <0-255> Enter ICMP type number (0 - 255) alternate-address conversion-error echo echo-reply inactive Keyword for disabling an ACL element information-reply information-request log Keyword for enabling log option on this ACL element mask-reply mask-request mobile-redirect object-group ICMP object-group for destination port parameter-problem redirect router-advertisement router-solicitation source-quench time-exceeded time-range Keyword for attaching time-range option to this ACL element timestamp-reply timestamp-request traceroute unreachable <cr>
"access-list outside extended permit icmp any any 8" is a valid syntax and should work.
You would still need to Nat it so it can then forward to the device on the inside.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.