I have linux Red Hat 7.3
How can I set up firewall rule with IPTABLES to permit access to pop3 servers?
I tried.
/sbin/iptables -A INPUT -p tcp -s 192.168.1.0/24 --destination-port 110 -j ACCEPT
/sbin/iptables -t nat -A POSTROUTING -p all -s 192.168.1.0/24 -j MASQUERADE
but it's not working
can help me please?
thanks.