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SSH connectivity issue with Putty client .. I request your help to fix it

  • 1.  SSH connectivity issue with Putty client .. I request your help to fix it

    Posted Fri August 02, 2013 06:29 AM

    Originally posted by: Gowri22


    We have built New Power System 780 server with dual VIOS ( 2.2.2.2 ) setup and vio client are AIX 6.1 and 7.1

    Open ssh details are as below

    # lslpp -l |grep open
    openpts.collector 1.0.0.0 COMMITTED Open Platform Trust Services -
    openssh.base.client 6.0.0.6100 COMMITTED Open Secure Shell Commands
    openssh.base.server 6.0.0.6100 COMMITTED Open Secure Shell Server
    openssh.man.en_US 6.0.0.6100 COMMITTED Open Secure Shell
    openssh.msg.en_US 6.0.0.6100 COMMITTED Open Secure Shell Messages -
    openssl.base 0.9.8.2400 COMMITTED Open Secure Socket Layer
    openssl.license 0.9.8.2400 COMMITTED Open Secure Socket License
    openssl.man.en_US 0.9.8.2400 COMMITTED Open Secure Socket Layer
    openpts.collector 1.0.0.0 COMMITTED Open Platform Trust Services -
    openssh.base.client 6.0.0.6100 COMMITTED Open Secure Shell Commands
    openssh.base.server 6.0.0.6100 COMMITTED Open Secure Shell Server
    openssl.base 0.9.8.2400 COMMITTED Open Secure Socket Layer

    SSH between 2 IBM frame is working fine.

    When I am connecting from putty .. I am getting incorrect MAC received in packet.

    Could you please help me to fix this issue?



  • 2.  Re: SSH connectivity issue with Putty client .. I request your help to fix it

    Posted Sun August 04, 2013 07:24 PM

    Originally posted by: X0_key


    Same problem with me !!!!



  • 3.  Re: SSH connectivity issue with Putty client .. I request your help to fix it

    Posted Mon August 05, 2013 10:23 AM

    Originally posted by: GarlandJoseph


    http://www.chiark.greenend.org.uk/~sgtatham/putty/faq.html#faq-incorrect-mac



  • 4.  Re: SSH connectivity issue with Putty client .. I request your help to fix it

    Posted Wed September 16, 2015 10:29 AM

    Originally posted by: Edv Help


    same problem here, seems to happen only when you have the packages security.acf/security.pkcs11 installed.

    i currently use the following workaround, add the following lines to your sshd_config on the affected aix lpar/server:
    MACs hmac-md5,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-md5-96

    then restart sshd and you should be able to connect with putty again.
    use it only as temporary workaround (until ibm/putty fixes this) as this removes all SHA MACs and MD5 is weak.