Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Getting error SSL_ERROR_NO_CYPHER_OVERLAP when using Parallels Remote Application Server

  • 4 replies
  • 14 have this problem
  • 256 views
  • Last reply by TysonD

more options

After setting up Parallels Remote Application Server, we are not able to connect using Firefox v54.0.

Message received: Error code: SSL_ERROR_NO_CYPHER_OVERLAP

Product page: http://www.parallels.com/products/ras/remote-application-server/

When setting security to "medium", Firefox works great. We are using "high" security however and so it only works in Edge, chrome, and IE11. We would really like for this to work in the current version of Firefox (note, have not tested older releases).

After looking at this page:

http://kb.parallels.com/en/123007

It is unclear to me whether we can make any changes to the product to get it working with Firefox while maintaining high security. Making changes to Firefox isn't an option since this product is used in a BYOD scenario and we won't be making or recommending config changes to user's browsers if there are others that work out of the box.

All Replies (4)

more options

SSL_ERROR_NO_CYPHER_OVERLAP Your server apparently doesn't offer any cipher suites necessary to establish a secure https connection that are supported in Firefox. You can check what kind of cipher suites Firefox can make use of by visiting https://www.ssllabs.com/ssltest/viewMyClient.html

more options

You did make sure that TLS 1.2 is enabled in Firefox?

You can check the TLS settings prefs on the about:config page

  • security.tls.version.min
  • security.tls.version.max
  • 1 means TLS 1.0; 2 means TLS 1.1; 3 means TLS 1.2; 4 means TLS 1.3;
more options

FredMcD said

SSL_ERROR_NO_CYPHER_OVERLAP Your server apparently doesn't offer any cipher suites necessary to establish a secure https connection that are supported in Firefox. You can check what kind of cipher suites Firefox can make use of by visiting https://www.ssllabs.com/ssltest/viewMyClient.html

Thank you for the link, this will be helpful.

more options

cor-el said

You did make sure that TLS 1.2 is enabled in Firefox? You can check the TLS settings prefs on the about:config page
  • security.tls.version.min
  • security.tls.version.max
  • 1 means TLS 1.0; 2 means TLS 1.1; 3 means TLS 1.2; 4 means TLS 1.3;

Yep. Using default settings and TLS 1.2 is enabled. Problem appears to be cipher settings. I'm just a little shocked that the default high security setting from Parallels wasn't tested apparently in Firefox.