Am Die, 2003-02-18 um 09.12 schrieb jacob_chan: > How to block all ports except port 21,22,80,8080 ??? > > Dear all, > > I want to block all ports except port 21,22,80,8080. Block for what? Input? What protocol? TCP? iptables -A INPUT -p tcp ! --dport 21,22,80,8080 -j DROP Cheers, Ralf > > Any help appreciated. > > Best regards, > > Jacob -- Ralf Spenneberg RHCE, RHCX IPsec/PPTP Kernels for Red Hat Linux: http://www.spenneberg.com/.net/.org/.de Honeynet Project Mirror: http://honeynet.spenneberg.org Snort Mirror: http://snort.spenneberg.org
