我想让 TCP 端口 1195 也为 VPN 打开，但它只是说 tcp dpt:1195 而不是 udp dpt:openvpn 并给出错误消息显式退出通知只能与 -proto udp 一起使用
这些是我的规则：
ACCEPT tcp -- anywhere anywhere tcp dpt:1195 /* Allow VPN connection */
ACCEPT udp -- anywhere anywhere udp dpt:openvpn /* Allow VPN connection */
cat /etc/openvpn/iptables.sh
#!/bin/bash
# Flush
iptables -t nat -F
iptables -t mangle -F
iptables -F
iptables -X
# Block All
iptables -P OUTPUT DROP
iptables -P INPUT DROP
iptables -P FORWARD DROP
# allow Localhost
iptables -A INPUT -i lo -j ACCEPT
iptables -A OUTPUT -o lo -j ACCEPT
# Make sure you can communicate with any DHCP server
iptables -A OUTPUT -d 255.255.255.255 -j ACCEPT
iptables -A INPUT -s 255.255.255.255 -j ACCEPT
# Make sure that you can communicate within your own network
iptables -A INPUT -s 192.168.0.0/24 -d 192.168.0.0/24 -j ACCEPT
iptables -A OUTPUT -s 192.168.0.0/24 -d 192.168.0.0/24 -j ACCEPT
# Allow established sessions to receive traffic:
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
# Allow TUN
iptables -A INPUT -i tun+ -j ACCEPT
iptables -A FORWARD -i tun+ -j ACCEPT
iptables -A FORWARD -o tun+ -j ACCEPT
iptables -t nat -A POSTROUTING -o tun+ -j MASQUERADE
iptables -A OUTPUT -o tun+ -j ACCEPT
# allow VPN connection
iptables -I OUTPUT 1 -p tcp --destination-port 1195 -m comment --comment "Allow VPN connection" -j ACCEPT
# iptables -I OUTPUT 1 -p udp --destination-port 1194 -m comment --comment "Allow VPN connection" -j ACCEPT
# Block All
iptables -A OUTPUT -j DROP
iptables -A INPUT -j DROP
iptables -A FORWARD -j DROP
# Log all dropped packages, debug only.
iptables -N logging
iptables -A INPUT -j logging
iptables -A OUTPUT -j logging
iptables -A logging -m limit --limit 2/min -j LOG --log-prefix "IPTables general: " --log-level 7
iptables -A logging -j DROP
echo "saving"
iptables-save > /etc/iptables.rules
echo "done"
#echo 'openVPN - Rules successfully applied, we start "watch" to verify IPtables in realtime (you can cancel it as usual CTRL + c)'
#sleep 3
#watch -n 0 "sudo iptables -nvL"
iptables-L
Chain INPUT (policy DROP)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- 255.255.255.255 anywhere
ACCEPT all -- 192.168.0.0/24 192.168.0.0/24
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere
DROP all -- anywhere anywhere
logging all -- anywhere anywhere
Chain FORWARD (policy DROP)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
DROP all -- anywhere anywhere
Chain OUTPUT (policy DROP)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp dpt:1195 /* Allow VPN connection */
ACCEPT udp -- anywhere anywhere udp dpt:openvpn /* Allow VPN connection */
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere 255.255.255.255
ACCEPT all -- 192.168.0.0/24 192.168.0.0/24
ACCEPT all -- anywhere anywhere
DROP all -- anywhere anywhere
logging all -- anywhere anywhere
Chain logging (2 references)
target prot opt source destination
LOG all -- anywhere anywhere limit: avg 2/min burst 5 LOG level debug prefix "IPTables general: "
DROP all -- anywhere anywhere