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debian7配置iptables vim /etc/iptables.rule 文件内容如下 *filter # Allows all loopback (lo0) traffic and drop all traffic to 127/8 that doesn’t use lo0 -A INPUT -i lo -j ACCEPT -A INPUT ! -i lo -d 127.0.0.0/8 -j REJECT # Accepts all established inbound connections -A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT # Allows all outbound traffic # You could modify this to only allow certain traffic -A OUTPUT -j ACCEPT # Allows HTTP and HTTPS connections from anywhere (the normal ports for websites) -A INPUT -p tcp –dport 80 -j ACCEPT -A INPUT -p tcp –dport 443 -j ACCEPT # Allows SSH connections for script kiddies # THE -dport NUMBER IS THE SAME ONE YOU SET UP IN THE SSHD_CONFIG FILE -A INPUT -p tcp -m state –state NEW –dport 22 -j ACCEPT # Allow ping -A INPUT -p icmp -m icmp –icmp-type 8 -j ACCEPT # log iptables denied calls (access via ‘dmesg’ command) -A INPUT -m limit –limit 5/min -j LOG –log-prefix “iptables denied: ” –log-level 7 # Reject all other inbound – default deny unless explicitly allowed policy: -A INPUT -j REJECT -A FORWARD -j REJECT COMMIT 测试这个脚本，iptables-restore < /etc/iptables.rule 如果发现iptables-restore v1.x.x: no command specified的错误，就把上面的脚本里面的空行全部删除，然后再重新回车添加 建立开机启动，vim /etc/init.d/start-iptables #! /bin/sh ### BEGIN INIT INFO # Provides: custom iptables # Required-Start: # Required-Stop: # Default-Start: S # Default-Stop: ## Short-Description: custom iptables ### END INIT INFO /sbin/iptables-restore < /etc/iptables.rule chmod +x /etc/init.d/start-iptables设置执行权限 rcconf添加这个脚本开机启动 (责任编辑：IT) |