http://wiki.docking.org/index.php?action=history&feed=atom&title=Tau 2026-04-08T11:16:38Z Revision history for this page on the wiki MediaWiki 1.39.1 http://wiki.docking.org/index.php?title=Tau&diff=11225&oldid=prev 2018-12-28T23:33:54Z

<p>slowloris mitigation included</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:33, 28 December 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">Due to </del>tau<del style="font-weight: bold; text-decoration: none;">&#039;s spree </del>of <del style="font-weight: bold; text-decoration: none;">crashing</del>, <del style="font-weight: bold; text-decoration: none;">relevant information on tau will be recorded here for referencing </del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>tau <ins style="font-weight: bold; text-decoration: none;">is one </ins>of <ins style="font-weight: bold; text-decoration: none;">our webservers which hosts zinc12</ins>, <ins style="font-weight: bold; text-decoration: none;">zinc15, irwinlab, and dude18</ins></div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> [root@he shm]# date </del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> Wed Sep 21 20:09:55 PDT 2016</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> [root@he shm]# virt-filesystems --long -h --all -a tau-disk1.qcow2 </del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> Name                  Type      VFS  Label MBR Size Parent</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> /dev/sda1              filesystem ext2 boot  -  150M -</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> /dev/vg_system/lv_root filesystem ext4 -    -  11G  -</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> /dev/vg_system/lv_swap filesystem swap -    -  3.5G -</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> /dev/vg_system/lv_root lv        -    -    -  11G  /dev/vg_system</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> /dev/vg_system/lv_swap lv        -    -    -  3.5G /dev/vg_system</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> /dev/vg_system        vg        -    -    -  15G  /dev/sda2</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> /dev/sda2              pv        -    -    -  15G  -</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> /dev/sda1              partition  -    -    83  150M /dev/sda</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> /dev/sda2              partition  -    -    8e  15G  /dev/sda</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> /dev/sda              device    -    -    -  15G  -</del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>  <del style="font-weight: bold; text-decoration: none;">[root@</del>tau <del style="font-weight: bold; text-decoration: none;">~]# free </del>-<del style="font-weight: bold; text-decoration: none;">h </del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">===slowloris mitigation===</ins></div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">              total      used      free    shared    buffers    cached</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">A slowloris attacker is causing websites hosted on the tau webserver to get hung up and connection timeout.  ZINC12, ZINC15, irwinlab, and dude18 all hung during this time. </ins> <ins style="font-weight: bold; text-decoration: none;">I&#039;ve determined this is due to a slowloris attack judging by the fact that /var/log/httpd/error_log displays the MaxClients value has been maxed out and that </ins>tau<ins style="font-weight: bold; text-decoration: none;">.compbio.ucsf.edu/server</ins>-<ins style="font-weight: bold; text-decoration: none;">status shows every single server socket getting occupied by a &#039;..reading</ins>..<ins style="font-weight: bold; text-decoration: none;">&#039; value</ins>. <ins style="font-weight: bold; text-decoration: none;"> </ins></div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> Mem:          3</del>.<del style="font-weight: bold; text-decoration: none;">7G      3</del>.<del style="font-weight: bold; text-decoration: none;">6G      121M      308K        41M      2</del>.<del style="font-weight: bold; text-decoration: none;">9G</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> -</del>/<del style="font-weight: bold; text-decoration: none;">+ buffers</del>/<del style="font-weight: bold; text-decoration: none;">cache:      720M      3</del>.<del style="font-weight: bold; text-decoration: none;">0G</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">https:</ins>//<ins style="font-weight: bold; text-decoration: none;">ma</ins>.<ins style="font-weight: bold; text-decoration: none;">ttias</ins>.<ins style="font-weight: bold; text-decoration: none;">be/effectively-using-detecting-the-slowloris-http-dos-tool/</ins></div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> Swap:        3</del>.<del style="font-weight: bold; text-decoration: none;">5G        0B      3.5G</del></div></td><td colspan="2" class="diff-side-added"></td></tr> </table>

Benrwong http://wiki.docking.org/index.php?title=Tau&diff=9617&oldid=prev 2016-09-22T02:03:18Z

<p>Created page with &quot;Due to tau&#039;s spree of crashing, relevant information on tau will be recorded here for referencing [root@he shm]# date Wed Sep 21 20:09:55 PDT 2016 [root@he shm]# virt-fil...&quot;</p> <p><b>New page</b></p><div>Due to tau&#039;s spree of crashing, relevant information on tau will be recorded here for referencing <br /> [root@he shm]# date <br /> Wed Sep 21 20:09:55 PDT 2016<br /> [root@he shm]# virt-filesystems --long -h --all -a tau-disk1.qcow2 <br /> Name Type VFS Label MBR Size Parent<br /> /dev/sda1 filesystem ext2 boot - 150M -<br /> /dev/vg_system/lv_root filesystem ext4 - - 11G -<br /> /dev/vg_system/lv_swap filesystem swap - - 3.5G -<br /> /dev/vg_system/lv_root lv - - - 11G /dev/vg_system<br /> /dev/vg_system/lv_swap lv - - - 3.5G /dev/vg_system<br /> /dev/vg_system vg - - - 15G /dev/sda2<br /> /dev/sda2 pv - - - 15G -<br /> /dev/sda1 partition - - 83 150M /dev/sda<br /> /dev/sda2 partition - - 8e 15G /dev/sda<br /> /dev/sda device - - - 15G -<br /> <br /> [root@tau ~]# free -h <br /> total used free shared buffers cached<br /> Mem: 3.7G 3.6G 121M 308K 41M 2.9G<br /> -/+ buffers/cache: 720M 3.0G<br /> Swap: 3.5G 0B 3.5G</div>

Benrwong