Request DDOS attack

Discussion in 'General' started by server4vn, Oct 7, 2010.

  1. server4vn

    server4vn New Member

    Hello
    My Site is under ddos attack now and i dont know how to handle this . They used SSYN Flood on my site before and with Litespeed i could protect my server no problem . Thanks Litespeed for this ! BUT NOW they changed the DDOS somehow it send many requests at once to 1 virtual host ( the web server still up , and other site running very good no problem at all ) But for that site under ddos attack

    Real time stats from Litespeed :
    The Req in Processing from that domain gone to very very high : like 100
    while the Req/Sec is low like 10/s 5/s 20/s
    then that domain under ddos attack is down

    The server load is low only like 1 or under 0.5 all other sites running smooth only the site that under attack down . I tried to swich to Apache then the site could run but after few minutes it stuck for like 1 min then back running for few minutes then stuck again .
    What type of DDOS attack is this ? Any1 have experience with this and how to handle this ? Is this slowloris type ? I ve tried any way and combine with CSF Firewall and Litespeed but still fail :( . At the moment im transfer my site to Hostgator and the ddos seem cant do anything to Hostgator Hosting while it kill my Litespeed server easily . Please Helppppppp
  2. NiteWave

    NiteWave Administrator

    does the DDOS access a same URL, like vhost's homepage?
  3. server4vn

    server4vn New Member

    Im not sure how can we check that ?
  4. server4vn

    server4vn New Member

    It seem LSWS 4.0.15 can handle this but with 4.0.16 the Request in processing go higher than Request/sec and made the site Down . How can we downgrade LSWS to 4.0.15 ?
  5. server4vn

    server4vn New Member

    No it s not 4.0.15 down too :(
  6. NiteWave

    NiteWave Administrator

    can check access log, which URL are accessed with too many times during DDOS

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