How many type firewall have in network

Heya,

In networking, there are several types of firewalls:

1. Packet-Filtering Firewall

   • Checks packets individually based on IP, port, and protocol.

   • Very fast, but basic (can’t see inside packets).

2. Stateful Firewall

   • Tracks the state of active connections (TCP handshake, etc.).

   • Smarter than packet filtering, understands the context.

3. Application Layer Firewall (Proxy Firewall)

   • Inspects traffic at the application level (HTTP, FTP, DNS).

   • Can block specific requests or responses.

4. Next-Generation Firewall (NGFW)

   • Combines stateful inspection + deep packet inspection + intrusion prevention.

   • Also often supports SSL decryption, antivirus, etc.

5. Cloud Firewalls (like DigitalOcean Cloud Firewall)

   • Managed firewall service in the cloud.

   • Filters incoming and outgoing traffic without configuring the server directly.

6. Web Application Firewall (WAF)

   • Specialized firewall to protect web apps.

   • Blocks threats like SQL injection, XSS attacks.

✅ In the case of DigitalOcean, this might be the Cloud Firewall:

• You define rules in the dashboard (allow/block IPs, ports).

• It filters traffic before it reaches your Droplet.