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2025-02-28 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Network Security >
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Shulou(Shulou.com)06/01 Report--
# # save as / etc/sysconfig/iptables,then / etc/init.d/iptables restart | start
# Firewall configuration written by redhat-config-securitylevel
* filter
: INPUT DROP [0:0]
: FORWARD ACCEPT [0:0]
: OUTPUT ACCEPT [0:0]
: RH-Firewall-1-INPUT-[0:0]
-An INPUT-j RH-Firewall-1-INPUT
-A FORWARD-j RH-Firewall-1-INPUT
-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-p tcp- m tcp--tcp-flags FIN,SYN FIN,SYN-j DROP
-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-m state-- state NEW-m tcp-p tcp-- dport 2222-j ACCEPT
#
-A RH-Firewall-1-INPUT-m state-- state NEW-m tcp-p tcp-- dport 80-j ACCEPT
-A RH-Firewall-1-INPUT-m state-- state NEW-m tcp-p tcp-- dport 443-j ACCEPT
#
-A RH-Firewall-1-INPUT-m state-- state NEW-m tcp-p tcp-- dport 3306-j ACCEPT
#
-A RH-Firewall-1-INPUT-m state-- state NEW-m tcp-p tcp-- dport 8081-j ACCEPT
-A RH-Firewall-1-INPUT-m state-- state NEW-m tcp-p tcp-- dport 8088-j ACCEPT
#
-A RH-Firewall-1-INPUT-m state-- state NEW-m tcp-p tcp-- dport 53-j ACCEPT
-A RH-Firewall-1-INPUT-m state-- state NEW-m udp-p udp-- dport 53-j ACCEPT
#
-A RH-Firewall-1-INPUT-s xxx.xxx.xxx.xxx-j ACCEPT
#
-A RH-Firewall-1-INPUT-p tcp-m state-- state NEW-m tcp-s-- dport 6666-j ACCEPT
-A RH-Firewall-1-INPUT-p tcp-m state-- state NEW-m tcp-s xxx.xxx.xxx.xxx-- dport port1-j ACCEPT
#
#
-A RH-Firewall-1-INPUT-j REJECT-- reject-with icmp-host-prohibited
COMMIT
#
In fact, it is recommended to add relevant rules and take effect in the following ways:
Iptables-t nat-A POSTROUTING-s 10.1.1.1 Universe 24-j MASQUERADE
# the above rules will be updated to the [/ etc/sysconfig/iptables] file
/ etc/init.d/iptables save
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