-   Linux - Networking (
-   -   Echo Request (

jayadhanesh 02-08-2011 02:05 AM

Echo Request
Why firewalls does not allow ICMP echo request packets. Why are pings not allowed to certain systems?


acid_kewpie 02-08-2011 02:21 AM

Well it just depends on your security policies. ICMP will imply that a system exists (although can be spoofed by honeypots etc.) Personally I don't like permitting ICMP in general. If you have no business connecting to a web service on a given machine, what right would you have to know if that machine can be pinged?
