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SSL Scanning ssl_error_bad_mac_alert


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Since re-enabling the SSL scanning feature on 5.0.2225, I occasionally run in to websites that throw the following cert error in Firefox 27.0.1: ssl_error_bad_mac_alert


No idea if this is because of an issue with the way Nod32 implements the SSL interception, or its a problem on the other end with a bad SSL implementation on the target server, but the error doesn't give me a lot to go on when it crops up.


Win 7 64-bit SP1

Firefox 27.0.1

Endpoint Protection 5.0.2225.0


Virus signature database: 9533P (20140312)
Rapid Response module: 3808 (20140312)
Update module: 1048 (20140204)
Antivirus and antispyware scanner module: 1421 (20140219)
Advanced heuristics module: 1147 (20140114)
Archive support module: 1193 (20140303)
Cleaner module: 1086 (20140303)
Anti-Stealth support module: 1058 (20140130)
ESET SysInspector module: 1240 (20131202)
Self-defense support module: 1022 (20121129)
Real-time file system protection module: 1009 (20130301)
Translation support module: 1145 (20131121)
HIPS support module: 1120 (20140305)
Internet protection module: 1113 (20140312)
Database module: 1056 (20140303)

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Okay, extra info and a way to reproduce it. Trying to go to the login link on www.mydish.com fails with a cert error against identity1.dishnetwork.com on Firefox 27.0.1. IE11 passes it without an issue.

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  • 2 weeks later...

Hi Infractal,


Sorry for the slow response. We have a newly released version of Endpoint Antivirus, 5.0.2228, which contains some additional fixes for SSL. Please upgrade to the latest version and see if the issue persists:


How do I Download and Install ESET Endpoint products? (5.x)


If the issue persists after upgrading, please PM me your license information (ESET username and email) and I will open a case. We will need to collect additional logging information to submit to our developers.


Thank you,


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  • Administrators

This error is supposed to be fixed in beta versions of the Internet protection module that is currently being tested internally.

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Still seeing the issue on 5.0.2228 with the mydish.com login.




Is there an ETA to when that module will hit the pre-release channel?

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