> Source: [sk114419](https://support.checkpoint.com/results/sk/sk114419)

# sk114419 - Unable to bypass Skype in HTTPS Inspection policy using a "Category", or a custom "Application/Site" in the rule

| Property | Value |
|----------|-------|
| Solution ID | sk114419 |
| Date Created | 2016-11-07 |
| Last Modified | 2021-10-21 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |

## Symptoms

- * Bypass of "Skype" (not "Skype for Business") in the HTTPS Inspection policy does not work when using a "Category", or a custom "Application/Site" in the rule.

* Able to successfully bypass "Skype" when using an "IP", or a "Network" in the HTTPS Inspection rule.

## Cause

Skype does not use standard SSL / HTTPS, but rather it uses some proprietary encrypted protocol.

As a result, Skype traffic cannot be decrypted by HTTPS Inspection and cannot be bypassed by "Category" / "URL" (e.g., \*.skype.com, \*skype.com, \*.skype.net, \*skype.net), since Skype does not provide a SSL certificate, which is the source for FQDN.

As a result, HTTPS Inspection bypass rules for "Skype" can work only based on IP address/range/subnet.

## Solution

This solution requires authentication. Please log in to view the full solution.

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