Here we have linux tutorial for, how to open port 80 in linux iptables. Many times we need to open 80 port on linux box. Through command line opening the 80 or any port that is easy. In this tutorial I will how you can open the port 80.
how to open port 80 in linux iptables Using following you can check the firewall setting of Linux.
01[root@sonyk-pc project]# iptables -L
02Chain INPUT (policy ACCEPT)
03target prot opt source destination
04ACCEPT udp -- anywhere anywhere udp dpt:domain
05ACCEPT tcp -- anywhere anywhere tcp dpt:domain
06ACCEPT udp -- anywhere anywhere udp dpt:bootps
07ACCEPT tcp -- anywhere anywhere tcp dpt:bootps
08ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
09ACCEPT icmp -- anywhere anywhere
10ACCEPT all -- anywhere anywhere
11ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:domain
12ACCEPT udp -- anywhere anywhere state NEW udp dpt:domain
13ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:ssh
14ACCEPT tcp -- anywhere anywhere tcp dpt:http state NEW
15ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:vnc-server
16ACCEPT udp -- anywhere anywhere state NEW udp dpt:vnc-server
17ACCEPT tcp -- anywhere anywhere tcp dpt:patrol-snmp state NEW
18ACCEPT tcp -- anywhere anywhere tcp dpt:61613 state NEW
19REJECT all -- anywhere anywhere reject-with icmp-host-prohibited
21Chain FORWARD (policy ACCEPT)
22target prot opt source destination
23ACCEPT all -- anywhere 192.168.122.0/24 state RELATED,ESTABLISHED
24ACCEPT all -- 192.168.122.0/24 anywhere
25ACCEPT all -- anywhere anywhere
26REJECT all -- anywhere anywhere reject-with icmp-port-unreachable
27REJECT all -- anywhere anywhere reject-with icmp-port-unreachable
28REJECT all -- anywhere anywhere reject-with icmp-host-prohibited
30Chain OUTPUT (policy ACCEPT)
31target prot opt source destination
Using following command you can open the port 80. using following command use 80 port will be open for 192.168.2.0 to 192.168.2.68 ip addresses.
1[root@sonyk-pc project]# iptables -A INPUT -s 192.168.2.0/68 -d 192.168.2.16 -p tcp --dport 80 -j ACCEPT
using following command you can save the setting in iptables.
1[root@sonyk-pc project]# restorecon -R /etc/sysconfig/iptables
3[root@sonyk-pc project]# service iptables save
5iptables: Saving firewall rules to /etc/sysconfig/iptables:[ OK ]
Than restart the firewall using following command
1[root@sonyk-pc project]# service iptables restart
2iptables: Flushing firewall rules: [ OK ]
3iptables: Setting chains to policy ACCEPT: nat mangle filte[ OK ]
4iptables: Unloading modules: [ OK ]
5iptables: Applying firewall rules: Using intrapositioned negation (`--option ! this`) is deprecated in favor of extrapositioned (`! --option this`).
6Using intrapositioned negation (`--option ! this`) is deprecated in favor of extrapositioned (`! --option this`).
