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# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT
谁能帮我解释下,为什么要加:
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT这一行及
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT 这一行?
有了:INPUT ACCEPT [0:0]
不是所有的连接都可以接入吗?为什么要加上面两行呢?谢谢! |
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