Port forwarding

There are 4 replies in this Thread which was already clicked 829 times. The last Post () by rikjaard-real.

  • Hi Guys


    Need some help. i have a cs server running on a db7000 with a vm120mb internet line. Everything works but every few days the clients cannot access server,,, i get syn flood on router any ideas what may be causing the issue?

  • Im not sure why you have Port Forward in your Title.
    You can setup Iptables to block syn attacks


    http://linuxsat-support.com/li…quick-guide-iptables.html


    If the problem is within the router itself you will have to isolate the source & contact VM or get a DD-WRT router




    All your problems have been solved countless times before so try the search box before you post!!
    Please do not Request help by PM, use the main forum so Everyone can benefit from the answers.

  • thanks for quick response,,, it was working fine before never had any issues. Not sure if adding more clients has tipped it over the edge or if the router is knackered

  • Syn flood can occur if you have way to many people connected -
    Or a HOP 2 could be getting abused ???
    SYN flood - Wikipedia, the free encyclopedia


    Check the logs in your router - when i had VM connection i noticed lots of port scanning and syn floods came directly from Virgin themselves ?
    No idea why ?
    I'n my case i found removing certain peers i had given additional hops to helped !

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