このチュートリアルに従ってopenvpnサーバーを設定しました。
https://linode.com/docs/networking/vpn/set-up-a-hardened-openvpn-server/
ipv4設定を交換する部分に達したら、一度実行します。
iptables-restore < /etc/iptables/rules.v4
サーバーとの接続が失われました。これは私がファイルに入れたコードです。
*filter
# Allow all loopback (lo) traffic and reject anything
# to localhost that does not originate from lo.
-A INPUT -i lo -j ACCEPT
-A INPUT ! -i lo -s 127.0.0.0/8 -j REJECT
-A OUTPUT -o lo -j ACCEPT
# Allow ping and ICMP error returns.
-A INPUT -p icmp -m state --state NEW --icmp-type 8 -j ACCEPT
-A INPUT -p icmp -m state --state ESTABLISHED,RELATED -j ACCEPT
-A OUTPUT -p icmp -j ACCEPT
# Allow SSH.
-A INPUT -i eth0 -p tcp -m state --state NEW,ESTABLISHED --dport 22 -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m state --state ESTABLISHED --sport 22 -j ACCEPT
# Allow UDP traffic on port 1194.
-A INPUT -i eth0 -p udp -m state --state NEW,ESTABLISHED --dport 1194 -j ACCEPT
-A OUTPUT -o eth0 -p udp -m state --state ESTABLISHED --sport 1194 -j ACCEPT
# Allow DNS resolution and limited HTTP/S on eth0.
# Necessary for updating the server and timekeeping.
-A INPUT -i eth0 -p udp -m state --state ESTABLISHED --sport 53 -j ACCEPT
-A OUTPUT -o eth0 -p udp -m state --state NEW,ESTABLISHED --dport 53 -j ACCEPT
-A INPUT -i eth0 -p tcp -m state --state ESTABLISHED --sport 80 -j ACCEPT
-A INPUT -i eth0 -p tcp -m state --state ESTABLISHED --sport 443 -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m state --state NEW,ESTABLISHED --dport 80 -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m state --state NEW,ESTABLISHED --dport 443 -j ACCEPT
# Allow traffic on the TUN interface so OpenVPN can communicate with eth0.
-A INPUT -i tun0 -j ACCEPT
-A OUTPUT -o tun0 -j ACCEPT
# Log any packets which don't fit the rules above.
# (optional but useful)
-A INPUT -m limit --limit 3/min -j LOG --log-prefix "iptables_INPUT_denied: " --log-level 4
-A FORWARD -m limit --limit 3/min -j LOG --log-prefix "iptables_FORWARD_denied: " --log-level 4
-A OUTPUT -m limit --limit 3/min -j LOG --log-prefix "iptables_OUTPUT_denied: " --log-level 4
# then reject them.
-A INPUT -j REJECT
-A FORWARD -j REJECT
-A OUTPUT -j REJECT
COMMIT
上記の内容にどのような問題があるのかご存知ですか?私が見るには大丈夫だと思います!
ありがとう