Re: [Interest] TCP SYN flood attack.

2015-06-09 Thread Thiago Macieira
On Tuesday 09 June 2015 19:23:05 Bill Crocker wrote: > I use QTcpSocket to connect to the server. > Is there any way I could be using sockets improperly > such that my app is the source of the SYN flood attack > perceived by the server. No, it's impossible for you to be using sockets improperly --

Re: [Interest] TCP SYN flood attack.

2015-06-09 Thread Christian Gagneraud
On 10/06/15 11:23, Bill Crocker wrote: > Dear Qt enthusiasts: > > I am having a problem with my large, > distributed QT based client/server app. > It periodically appears as if the > server machine is under a SYN flood attack. > >> netstat -ts | grep -i syn > 7563748 invalid SYN cookies recei

[Interest] TCP SYN flood attack.

2015-06-09 Thread Bill Crocker
Dear Qt enthusiasts: I am having a problem with my large, distributed QT based client/server app. It periodically appears as if the server machine is under a SYN flood attack. >netstat -ts | grep -i syn 7563748 invalid SYN cookies received 75 resets received for embryonic SYN_RECV socke