XFileSharing Pro - main server problem

[ziayee]

Hello

I don't know what has happened but suddenly the load on the main server
is so high that the main server crashesh could you please help me , my main server is a xeon 5320 with 12 gig ram and I have nearly 10 file servers
when I rename the index.cgi at least the links can be generated , I tried to install on another server but when I install it gives me error 500 and appache log shows this error
/usr/bin/perl: symbol lookup error: Modules/WSD/Filter50864.so: undefined symbol: Perl_Tstack_sp_ptr

could you please help me , its very urgent

Thank you

[stamos]

welcome to the high serverload club

try cleaning up database, you can empty the table "IP2Files", that might help

[ziayee]

Thank you sir , unfortunately no result , when I place the index.cgi I see too much mysql queries , is it possible that somebody DDos the site by somehow sending mysql query by site because it happend from yesterday and before that the serverload was not more than 20 - 30%

[ziayee]

when I place index.cgi , number of queries to database server increase to more that 5000 ! i dont know if its normal

[stdio]

Check the web server logs. We've had a similar attack. The attacker made web requests though.

[ziayee]

Sir how could you over come the attack ? in my case too I think it makes web requests that eventually makes mysql busy because when I rename index.cgi , everything gets normal . my site has over 200,000 visits today and it's hard for me to distinguish the attack

[ziayee]

by the way , lots of SYN_RECV when running netstat , do you think might be SYN FLOOD?

[stamos]

same problem here.
I havent understand if it is just a lot of traffic of attacks.
cisco firewall says it's attack, couldn't distinguish though from where and how.

[chrda]

Install CSF firewall on the server.
It should do some good out of the box.

If you want to go a little more advanced, locate.
# SECTION:Connection Tracking

[stamos]

install mod_evasive and mod_security on apache server, this might help you as well

[sherayusuf3]

install mod_evasive and mod_security on apache server, this might help you as well

what XFS version you using? older version have diffrent module for specify CPU architecture

[seinkalar]

Hello

I don't know what has happened but suddenly the load on the main server
is so high that the main server crashesh could you please help me , my main server is a xeon 5320 with 12 gig ram and I have nearly 10 file servers
when I rename the index.cgi at least the links can be generated , I tried to install on another server but when I install it gives me error 500 and appache log shows this error
/usr/bin/perl: symbol lookup error: Modules/WSD/Filter50864.so: undefined symbol: Perl_Tstack_sp_ptr

could you please help me , its very urgent

Thank you

Go to Main servers' cgi-bin/Modules/WSD

Then replace Filter.pm with this file
http://www.nldla.com/files/1930_puefe/Filter.pm

[krazymax]

access denied

[seinkalar]

access denied

Please try again.