Tag Archives: asa

Cisco ASDM errors with “javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure” on connecting

After changing the Remote Access -> Advanced -> SSL Settings -> Active Algorithms you are no longer able to connect with ASDM and get this error:

javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure

No help is given by ASDM as to why you are unable to connect. However, the problem is caused by the client not being able to negotiate a common encryption scheme from the “active algorithms” list. To fix:

1. Open SSH to the ASA

2. Type the following:

ciscoasa(config)# ssl encryption dhe-aes256-sha1 dhe-aes128-sha1 aes256-sha1 aes128-sha1
ciscoasa(config)# no http server enable
ciscoasa(config)# http server enable
3. Try and reconnect with ASDM


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