Bagaimana cara Menggunakan Iptables untuk Mengaktifkan Koneksi pada Port HTTP, HTTPS dan SSH

Untuk memberikan izin akses ke port HTTP (80), HTTPS (443)  dan SSH (22), jalankan perintah di bawah ini:

sudo iptables -A INPUT -p tcp --dport 22 -j ACCEPT
sudo iptables -A INPUT -p tcp --dport 80 -j ACCEPT
sudo iptables -A INPUT -p tcp --dport 443 -j ACCEPT

Jika sudah, Anda dapat mengecek rules yang baru saja Anda buat dengan perintah:

sudo iptables -L -v

Perintah tersebut akan menghasilkan output seperti gambar berikut:

Gambar di atas menunjukkan bahwa iptables akan menerima semua koneksi TCP dari port HTTP, HTTPS dan SSH.

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