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  1. #1
    Join Date
    Jul 2002
    New York, USA

    DOS attack with SSH, anyway to stop it?

    This is something new I haven't seen before, a DOS attack with SSH. We HAVE the latest openssh-3.4p1 RPM. The DOS attack is preventing real ssh clients to enter in.

    My question is what would you recommend to stop or block out the ssh attack?
    Larry Ludwig
    Empowering Media
    HostCube - Proactively Managed Xen based VPSes
    Empowering Media - The Dev Null Blog

  2. #2
    If you know who the DOS is coming can use something like iptables/ipchains to block the incoming or hosts.deny or lastly request your ISP to block the offending IP address
    *AlphaOmegaHosting.Com* - Hosting since 1998
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  3. #3


    If you have a dedicated firewall, I imagine it would soon pick up on this and block them. Otherwise, as dandanfirema says, find the IP address in the correct log file, and add them to hosts.deny


  4. #4
    Join Date
    Jul 2001
    Indianapolis, IN
    if it's really hardcore contact your provider and have them block the ip upstream - that way you don't have to pay for the bandwidth.


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