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I add rule lines to iptables in Linux Firewall, but closed ports will not be opened.

 

My iptables is as follows, but pots 23, 5900, 5800, 5500 are still closed.

 

# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:FORWARD ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type echo-request -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -i eth0 -j ACCEPT
-A INPUT -p tcp -m state -m tcp --dport 22 --state NEW -j ACCEPT
-A INPUT -p tcp -m state -m tcp --dport 23 --state NEW -j ACCEPT
-A INPUT -p tcp -m state -m tcp --dport 80 --state NEW -j ACCEPT
-A INPUT -p tcp -m state -m tcp --dport 21 --state NEW -j ACCEPT
-A INPUT -p tcp -m state -m tcp --dport 443 --state NEW -j ACCEPT
-A INPUT -p tcp -m state -m tcp --dport 53 --state NEW -j ACCEPT
-A INPUT -p udp -m state -m udp --dport 53 --state NEW -j ACCEPT
-A INPUT -p tcp -m state -m tcp --dport 5900 --state NEW -j ACCEPT
-A INPUT -p tcp -m state -m tcp --dport 5800 --state NEW -j ACCEPT
-A INPUT -p tcp -m state -m tcp --dport 5500 --state NEW -j ACCEPT
-A INPUT -p tcp -m state -m tcp --dport 10000 --state NEW -j ACCEPT
-A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
-A FORWARD -p icmp -m icmp --icmp-type echo-request -j ACCEPT
-A FORWARD -p icmp -j ACCEPT
-A FORWARD -i lo -j ACCEPT
-A FORWARD -i eth0 -j ACCEPT
-A FORWARD -j ACCEPT
-A INPUT -j ACCEPT
COMMIT
# Generated by webmin
*mangle
:FORWARD ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:PREROUTING ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
COMMIT
# Completed
# Generated by webmin
*nat
:OUTPUT ACCEPT [0:0]
:PREROUTING ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
COMMIT
# Completed

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https://forums.phpfreaks.com/topic/160747-cannot-open-ports-by-linux-firewall/
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