Some Common High-Risk Ports

Some Common High-Risk Ports

In PacketViper we will often use deception and dynamic perimeter technology to trap, observe, alert, and respond to certain patterns of traffic.  One of the most invaluable tools in that sort of pattern analysis is the target or destination port that is being addressed by attackers and compromised devices.

To that end, we present some commonly targeted ports that we identify as High-Risk.  These are ports that provide access to vulnerable services that host known vulnerabilities.  Please note that this listing is not intended to be exhaustive or complete, but to provide a jumping off point for the creation of Triggers and Custom Rules to protect your network.  See here for examples of Trigger configs.

NOTE: Some of these ports may be required for operations at your particular enterprise or in your particular industry.  Always use caution when implementing rules that can ultimately block access through PacketViper!

Our High-Risk Port listing follows:

  • 22/tcp (ssh/sftp)

  • 23/tcp (telnet)

  • 445/tcp (microsoft-ds)

  • 1080/tcp (socks)

  • 1433-1434/tcp (ms-sql-s)

  • 1433-1434/udp (ms-sql-s)

  • 3306/tcp (mysql)

  • 3306/udp (mysql)

  • 3389/tcp (rdp)

  • 5060-5061/udp (sip)

  • 53413/udp (netis)

Feel free to reach out to our support team if you feel that a service/port above has been listed in error or if you feel that our list would benefit from any additions.


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