On Wed, 30 Aug 2000, Danny Pansters wrote: > On Tue, 29 Aug 2000, Nick wrote: > > how do you stop linux from replying to pings like > > > > microsoft does. you can't ping www.microsoft.com or www.msn.com > > > > thankx nick > > OK, I got curious since it involves icmp, so it's not done in > /etc/inetd.conf, and I didn't know how to do it. > All I can say is RTFM, it's right there in the icpm man page that > I tried first. > > Just put this in /etc/sysctl.conf to turn ping replies off: > > net/ipv4/icmp_echo_ignore_all=1 > > Then run > > # sysctl -p > > But after that you should really go back to /etc/sysctl.conf and get rid of > it again (hint: it involves running sysctrl again :-).
Another fine hack would be this: ipchains -A input -i ppp0 -p icmp --icmp-type 8 -j DENY ipchains -A output -i ppp0 -p icmp --icmp-type 0 -j REJECT ICMP type 8 is echo-request. type 0 is echo-reply. Replace ppp0 by whatever you use to connect to the internet. Just my $0.02 Sebastian email: [EMAIL PROTECTED]
