Linode VPS(CentOS) 防火墙配置 - 快车库

创建防火墙规则文件 /etc/iptables.firewall.rules

文件内容（根据个人需求修改)

sh*filter

#  Allow all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0
-A INPUT -i lo -j ACCEPT
-A INPUT -d 127.0.0.0/8 -j REJECT

#  Accept all established inbound connections
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

#  Allow all outbound traffic - you can modify this to only allow certain traffic
-A OUTPUT -j ACCEPT

#  Allow HTTP and HTTPS connections from anywhere (the normal ports for websites and SSL).
-A INPUT -p tcp --dport 80 -j ACCEPT
-A INPUT -p tcp --dport 443 -j ACCEPT
-A INPUT -p tcp --dport 3306 -j ACCEPT
#java
-A INPUT -p tcp --dport 8080  -j ACCEPT
-A INPUT -p tcp --dport 9090  -j ACCEPT
# shadow-sockts
-A INPUT -p tcp --dport 9999 -j ACCEPT
-A INPUT -p tcp --dport 1080 -j ACCEPT
# 备用    
-A INPUT -p tcp --dport 10010 -j ACCEPT
-A INPUT -p tcp --dport 10011 -j ACCEPT
-A INPUT -p tcp --dport 10012 -j ACCEPT
-A INPUT -p tcp --dport 10013 -j ACCEPT
-A INPUT -p tcp --dport 10014 -j ACCEPT
-A INPUT -p tcp --dport 10015 -j ACCEPT 

#  Allow SSH connections
#   
#  The -dport number should be the same port number you set in sshd_config
#   
-A INPUT -p tcp -m state --state NEW --dport 22 -j ACCEPT
-A INPUT -p tcp -m state --state NEW --dport 10086 -j ACCEPT

#  Allow ping
-A INPUT -p icmp --icmp-type echo-request -j ACCEPT

#  Log iptables denied calls
-A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7

使规则生效并且保存

#生效
/sbin/iptables-restore < /etc/iptables.firewall.rules
#保存
/sbin/service iptables save