Re: Voluminous SSHd scanning; possible worm activity?

From: Bertrand Lupart (Bertrand.Lupartat_private)
Date: Wed Dec 12 2001 - 03:20:41 PST

  • Next message: Markus Friedl: "Re: Voluminous SSHd scanning; possible worm activity?"

    > 	For my own part, on top of upgrading to the latest versions of
    > SSHd, I'm recommending that folks utilize IPchains or IPFilter to
    > reinforce their explicitly-defined AllowHosts directives in sshd_config.
    > These measure in themselves should greatly mitigate both the present (and
    > hopefully, future) threat of successful remote attack on SSHd. 
    
    Are we safe if the attack is run from a host not listed as accepted in
    access control files, ie:
    
    /etc/hosts.deny:
    ALL: ALL
    
    /etc/hosts.allow:
    sshd: www.xxx.yyy.zzz
    
    Thanx.
    
    -- 
    Bertrand
    
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