A firewall is a security system that monitors and controls incoming and outgoing network traffic based on predefined rules. It blocks unauthorized access while allowing legitimate traffic.
Its core principle is simple:
Allow only what is explicitly permitted.
Firewalls analyze traffic based on:
Source IP
Destination IP
Port number
Protocol
Traffic is either allowed or blocked according to security rules.
A firewall is not just software, it is a security policy.
Filter traffic based on IP and ports.
Protect web applications by analyzing HTTP/HTTPS traffic.
Operate at data center level for high-performance protection.
Without a firewall:
Servers are exposed to scans
Brute-force attacks increase
Malicious traffic passes freely
This is not security, it is negligence.
Close all unnecessary ports
Change default SSH/RDP ports
Restrict access by IP
Combine hardware and software firewalls
Enable traffic logging
Use automatic attack detection
Game servers require:
Controlled UDP port access
Closed unused TCP ports
Rate limiting rules
Incorrect firewall rules cause lag.
Correct rules improve stability.
Allowing all traffic
Using default ports
No logging
Treating firewall as DDoS protection
Firewall is one layer, not the entire defense.
Firewall security is foundational.
If configured correctly, it works silently and effectively.
ServerTurk provides advanced firewall configurations and network security solutions for VDS and Dedicated Server services.
View secure server solutions:
https://serverturk.net
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