Hi! Recently, my kernel started print messages like
TCP: drop open request from [ip-number]/44669 TCP: drop open request from [ip-number]/44750 TCP: drop open request from [ip-number]/44668 TCP: drop open request from [ip-number]/44749 TCP: drop open request from [ip-number]/44748 TCP: drop open request from [ip-number]/44667 NET: 120 messages suppressed. I did a short investigation and found out that the server's either been syn-flooded or that it basicaly ran out of resources ... The machine acts web-server (apache) and serves about 3,500,000 requests / week. It's equipped with two p3-600mhz cpu's and 1gb ram. Vanilla kernel 2.4.21 and debian unstable. As this problem seems kind of unresolved it's hard to fix it by bumping up buffers or so. What's your experience? -- __ Yours sincerely, Christofer Algotsson