Setting SSH Gateway with iptables
Case : user smiertx allow access ssh and ping on 10.10.10.0/24 and 10.10.20.0/24 networks user ikhyar only allow access ssh and ping on 10.10.10.11 and 10.10.20.11 servers Edit iptables config file # vi /etc/sysconfig/iptables # Firewall configuration written by system-config-securitylevel # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :RH-Firewall-1-INPUT - [0:0] :smiertx - [0:0] :ikhyar - [0:0] -A INPUT -j RH-Firewall-1-INPUT -A FORWARD -j RH-Firewall-1-INPUT -A OUTPUT -m owner --gid-owner smiertx -j smiertx -A OUTPUT -m owner --gid-owner ikhyar -j ikhyar -A RH-Firewall-1-INPUT -i lo -j ACCEPT -A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited -A smiertx -d 10.10.10.0/255.255.255.0 -j A...