Why might an IRC server be running on port 80?

Why might an IRC server be running on port 80?

• A. To evade firewalls
• B. To support TLS encryption
• C. To reduce latency
• D. To block port 6667

Answer: (A)

Running an IRC server on port 80 is a tactic to bypass firewall and proxy restrictions. Port 80 is the standard port for web traffic, and many networks allow it through with fewer checks. By placing IRC on that port, the traffic can blend in with ordinary HTTP traffic, slipping past filters and NAT rules that might block or monitor IRC on its usual ports. This makes the IRC service more reachable in restricted environments and is a technique adversaries or unauthorized users might use to maintain communication channels. TLS on port 80 isn’t the typical use here, and using port 80 doesn’t inherently reduce latency. It’s about evading controls by using a commonly allowed port, whereas the other options don’t address that evasion motive.

Running an IRC server on port 80 is a tactic to bypass firewall and proxy restrictions. Port 80 is the standard port for web traffic, and many networks allow it through with fewer checks. By placing IRC on that port, the traffic can blend in with ordinary HTTP traffic, slipping past filters and NAT rules that might block or monitor IRC on its usual ports. This makes the IRC service more reachable in restricted environments and is a technique adversaries or unauthorized users might use to maintain communication channels.

TLS on port 80 isn’t the typical use here, and using port 80 doesn’t inherently reduce latency. It’s about evading controls by using a commonly allowed port, whereas the other options don’t address that evasion motive.