login about faq

Hello EveryOne,

it is possible to help with following...I am using on windows client?

I am seeing following in windows event viewer...

1001 Algorithm_negotiation_failure, Algorithm: Cipher (client to server), Client algorithms: , Server algorithms: blowfish-cbc

I have configured ...only enabled cypher - blowfish, in profile - default seting...but somehow it is not using that.

if I configure other cyphers also...then it uses other algorithms..but not the one I want (blow-fish)...or use default setting...for example then event viewer shows...

1001 Algorithm_negotiation_failure, Algorithm: Cipher (client to server), Client algorithms: crypticore128@ssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc, Server algorithms: blowfish-cbc

not sure ..what am I missing?

Regards, -Raj

asked Aug 23 '10 at 16:51

Raj's gravatar image


edited Sep 21 '11 at 17:35

SSH%20KB's gravatar image


Hi Raj,

Have you tried restarting the Connection Broker after you make these changes? This is done by right clicking on the Tectia icon and selecting exit or by logging out and back in. It should restart automatically when you start the client or when you log in.

If you already have an existing connection to that server using some other cipher it might try to reuse that rather than create a new connection. Newer versions of Client (6.1.x) handle this better.

If this does not help, the best approach would be to upgrade to the latest 6.1.x version. There is much better support for handling ciphers in 6.x (such as being able to specify them on the command line).

If this is not possible then try looking at the Tectia broker configuration file, found under:


and manually verify that the right cipher is written in the configuration file.


answered Aug 24 '10 at 06:47

Roman's gravatar image

Roman ♦♦

I did shutdown - restarted ...same thing...checked config file...it has <cipher name="blowfish-cbc"/> mentioned before other ciphers. anything else can we think of?

(Aug 25 '10 at 13:53) Raj Raj's gravatar image
Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here



Answers and Comments

Markdown Basics

  • *italic* or __italic__
  • **bold** or __bold__
  • link:[text](http://url.com/ "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported



Asked: Aug 23 '10 at 16:51

Seen: 4,757 times

Last updated: Sep 21 '11 at 17:35

All user contributed content licensed under the cc-by-sa license.
Powered by OSQA.