--- Khan <gmane@xxxxxxxxxxxx> escribió: > Hello, > > I am total beginner to Linux and I'm trying to learn > iptables basics. I > would like to learn how to close all ports but 80, > 20, and that ports 22 > and 10000 will be open only to my IP address. > > How can I do that. > > TNX! First of all, if you watn to reject all connection to all ports diferents from 80,20, 22 and 10000 iptables -P INPUT DROP iptables -P OUTPUT DROP iptables -P FORWARD DROP This rules won't allow anybody from anywhere to connect to your machine, now, it's time to open 80,20,22 and 10000 only for your ip, for example, 231.45.134.23 #This will allow 231.45.134.23 to connect ssh port (22) iptables -A INPUT -s 231.45.134.23 -p tcp --dport 22 -j ACCEPT iptables -A OUTPUT -d 231.45.134.23 -p tcp --dport 22 -j ACCEPT It's the same with the rest ports you want to be open only from your ip. Then you must close all privileges ports, 1:1024 iptables -A INPUT -p tcp --dport 1:1024 iptables -A INPUT -p udp --dport 1:1024 Best regards ===== -- Manuel Aróstegui Linux user 200896 http://manuel.todo-linux.com ______________________________________________ Renovamos el Correo Yahoo!: ¡100 MB GRATIS! Nuevos servicios, más seguridad http://correo.yahoo.es -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
