00:02
Hello student, restricting access to tcp udp port on a router or a firewall is a fundamental security practice that helps protect the network from various types of attacks.
00:12
Here's why it is effective.
00:15
Number one, defense against unauthorized access.
00:19
By default, many services and applications listen to specific ports for incoming connection.
00:27
Restricting access to these ports ensures that authorized and necessary connections are allowed.
00:33
Any unauthorized attempt to access this port is blocked.
00:37
Number two, reduce attack surface.
00:40
Every open port represents a potential entry point for the attackers.
00:45
By closing unnecessarily ports, we can reduce the attack surface and potential vulnerability that can be exploited.
00:54
Attackers often scan networks for open ports to identify potential weakness.
00:58
So closing unused ports reduces the chances of an attacker finding vulnerable services.
01:03
Number three, protection against known vulnerabilities.
01:07
So many attack targets, specific services and applications known to have by closing the restricting access to ports associated with these services, we can prevent attackers from directly exploiting these services.
01:20
Number four, mitigating of common threats...