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SSH Over DNS Tunneling


Check Point Reference: CPAI-2014-1508
Date Published:
Last Updated:
Source: IPS Research Team
Protection Provided by: Security Gateway
  • R77
  • R76
  • R75
Who is Vulnerable?

Vulnerability Description
SSH over DNS tunneling can be used by attackers to disclose unauthorized information. A remote attacker can use DNS tunneling methods to circumvent security products.

Protection Overview
This protection will detect and block attempts to bypass security inspection via certain SSH over DNS tunneling methods.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, Protection tab and select the version of your choice.

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R77 / R76 / R75 / R71 / R70

How Can I Protect My Network?

  1. In the IPS tab, click Protections and find the SSH Over DNS Tunneling protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:

Attack Name:  Tunneling Detection.
Attack Information:  SSH Over DNS Tunneling