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how block large icmp packets?
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Matt
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 06-26-02 01:25 AM
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Avi
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 Re: how block large icmp packets?
"Matt" < dontspammeokayblah@blahblahbla
hlbah.com> wrote in message news:<FC8S8.3452$Ji6.314802@e3500-atl2.usenetserver.com>...
> How can I block ICMP fragment packets / Large ICMP packets with pmfirewall
> script?
#
#-----INCOMING-------
#
#echo reply (pong)
$IPCHAINS -A input -p icmp --icmp-type 0 -j ACCEPT
#destination unreachable
$IPCHAINS -A input -p icmp --icmp-type 3 -j ACCEPT
#source quench
$IPCHAINS -A input -p icmp --icmp-type 4 -j ACCEPT
#time to live (TTL) for traceroute
$IPCHAINS -A input -p icmp --icmp-type 11 -j ACCEPT
#now deny all other INCOMING icmp packets
$IPCHAINS -A input -p icmp -j DENY -l
#
#-----OUTGOING------
#
#destination unreachable
$IPCHAINS -A output -p icmp --icmp-type 3 -j ACCEPT
#source quench
$IPCHAINS -A output -p icmp --icmp-type 4 -j ACCEPT
#echo request (ping)
$IPCHAINS -A output -p icmp --icmp-type 8 -j ACCEPT
#now deny all other OUTGOING icmp packets
$IPCHAINS -A output -p icmp -j DENY -l
for detailed info STW....
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06-26-02 10:25 AM
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