icmp

hitmenhitmen Banned Posts: 133
in CCNA & CCENT
If a remote site cannot be pinged, how come it can reply with icmp?

I don't understand
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Comments

  • networker050184networker050184 Mod Posts: 11,962 Mod
    Firewalls most likely filtering it out.
    An expert is a man who has made all the mistakes which can be made.
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  • theodoxatheodoxa Member Posts: 1,340 ■■■■□□□□□□
    If a router along the path lacks a route to the destination it will drop the packet and return an ICMP message to the sender [from whence it came]. If the packet reaches its destination, but somewhere along the way back there is no return route, it will simply timeout with no ICMP message [because it has no way to get an ICMP back to you.]
    R&S: CCENT → CCNA → CCNP → CCIE [ ]
    Security: CCNA [ ]
    Virtualization: VCA-DCV [ ]
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