Exercise: Dealing with IP traffic: configure iptables for ping

Last modified by superadmin on 2018-01-12 20:27

Exercise: Dealing with IP traffic: configure iptables for ping

Ping utility uses ICMP protocol to test reachability of other hosts in the network. The results of this program cannot be trusted though - it may be the case that some services on a machine respond, but ping is disabled for some reason. 

We provide the reason for this - IP routing. It is possible to configure iptables so that ping either responds with "Access Denied" or "Server Host unreachable". 

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Created by Kalvis Apsītis on 2008-04-03 10:25
    
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