I have an older mobility server. 221 users. Version 1.2.4 build 966. Its on SLES 11 sp1. Also a bit dated. Early in the morning Saturday the server seems to stop processing, or was processing very slowly. The only thing I saw that was amiss was this log entry. Thousands of them. Lasted until we rebooted the server. Now it seems fine.


Jul 12 09:32:47 nms kernel: [19068718.353192] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:33:48 nms kernel: [19068779.209305] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:35:08 nms kernel: [19068859.312467] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:36:28 nms kernel: [19068939.968501] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:37:44 nms kernel: [19069015.633213] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:38:53 nms kernel: [19069084.946282] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:39:54 nms kernel: [19069145.463574] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:41:22 nms kernel: [19069233.341346] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:42:35 nms kernel: [19069306.923009] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:43:51 nms kernel: [19069383.011862] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:44:53 nms kernel: [19069444.443582] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:46:00 nms kernel: [19069511.754417] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:47:23 nms kernel: [19069594.405434] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:48:45 nms kernel: [19069676.473916] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:50:01 nms kernel: [19069752.779430] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:51:11 nms kernel: [19069822.638160] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:52:55 nms kernel: [19069926.410153] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:53:55 nms kernel: [19069986.419826] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:54:56 nms kernel: [19070047.483478] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:56:09 nms kernel: [19070120.700399] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:57:16 nms kernel: [19070188.037402] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:58:18 nms kernel: [19070249.581761] possible SYN flooding on port 443. Sending cookies.
Jul 12 09:59:24 nms kernel: [19070315.406488] possible SYN flooding on port 443. Sending cookies.
Jul 12 10:00:42 nms kernel: [19070393.070135] possible SYN flooding on port 443. Sending cookies.
Jul 12 10:01:51 nms kernel: [19070462.427939] possible SYN flooding on port 443. Sending cookies.
Jul 12 10:02:53 nms kernel: [19070524.829226] possible SYN flooding on port 443. Sending cookies.
Jul 12 10:04:01 nms kernel: [19070592.184385] possible SYN flooding on port 443. Sending cookies.


This is the last messages before reboot. No more entries since reboot. Probably could do some patching and update to latest Mobility server I am sure. Its been rock solid up until this little burp. Any ideas?