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LS SteveJ

What ports are the most vulnerable and to which should I pay special attention?

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From a security point of view, TCP and UDP ports on your system are divided into several groups according to probabilities of an attacker using them to break in. Attempts to access ports that are assigned to vulnerable services like DCOM or RPC must be regarded a serious indication that you are being maliciously probed. Vulnerable ports are divided in two groups: System and Trojan. System ports are vulnerable because they are often open for everyday system services. Trojan ports are those known to be exploited by Trojan horses.

 

We recommend paying special attention to the following ports:

 

System:

 

0, 21-23, 25, 79, 80, 110, 113, 119, 135, 137, 139, 143, 389, 443, 445, 1002, 1024-1030, 1720, 1900, 5000, 8080 Trojan:

 

21, 23, 25, 80, 113, 137, 139, 555, 666, 1001, 1025, 1026, 1028, 1243, 2000, 5000, 6667, 6670, 6711, 6776, 6969, 7000, 8080, 12345, 12346, 21554, 22222, 27374, 29559, 31337, 31338

 

Lavasoft Personal Firewall lets you create a list of ports that are tempting to attackers. In this area, Lavasoft Personal Firewall will pay particular attention while monitoring network traffic. To manage the list of vulnerable ports, click the Advanced tab in the Attack Detection settings dialog and then in Vulnerable ports, click Specify.

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