Can DoS (Denial of Service) Attacks really be prevented?

Discussion in 'General Discussion' started by Robocub, Jun 5, 2006.

  1. Robocub

    Robocub LI Guru Member

    Hi, I think I'm a victim of two DoS attack in the past 2 months. I know practically every brand of hardware router claims to protect against DoS. But can anyone who has serious experience tell me can you really protect yourself against a DoS? And if so, how?

    If an attacker is bombarding my connection, which causes DoS, how can I stop the attacker, aside from actually pulling the plug on my network?
  2. Toxic

    Toxic Administrator Staff Member

    contact your ISP with the IP address. they will look into it and block that IP address if necessary.

    what hardware do you have?
  3. t4thfavor

    t4thfavor Network Guru Member

    if there are enough people DoSing you (DDoS) then you really cant stop it.
    Make sure the DoS is not coming from inside your network (spyware) by doing a netstat -a and seeing where the connection attempts are coming from.
    Yes there are ways to help decrease the effectiveness of a DoS attack, by filtering packets and turining off ping response and ICMP (mostly a router option)

    the reason I say to check for internal DoS is becuase DoS usually requires more than one attacker to saturate a decent computer, and the typical home user doesnt have that many enemies.

    EDIT: I almost forgot Log the DoS and report it to your ISP they will handle it.
  4. Robocub

    Robocub LI Guru Member

    Toxic: right now I'm using a Linksys WRT54G v2 with Thibor 15c.
    I used to use a Netgear FVS318 v3, which actually has much better logging than the Linksys' limited logging ability. I may go back to the Netgear. I was using the Linksys to see if there was any speed increase over the Netgear, but I havent notice any.

    t4thfavor: I'm all Mac so there's no spyware on my LAN.
  5. gotamd

    gotamd Network Guru Member

    I would also reccomend getting in touch with your ISP. They should be able to easily fix the problem for you by either changing your IP address or blocking traffic from whatever IP is attacking your computer.
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