My server is overloaded, i really don't know why

[360themes]

Please help me. I am using Joomla 1.0.12 + VBB 3.6.5. I don't know whether this integration is good or not but my server is always around 400% . Is there anybody here using Joomla and having the same problem? Should I drop Joomla and move to purely VBB CMS

[Marco van Herwaarden]

I suggest you post in the Server Configuration forum at vb.com: http://www.vbulletin.com/forum/forumdisplay.php?f=14

Make sure to include the details requested in the stickied thread in that forum.

[php4ever]

Please help me. I am using Joomla 1.0.12 + VBB 3.6.5. I don't know whether this integration is good or not but my server is always around 400% . Is there anybody here using Joomla and having the same problem? Should I drop Joomla and move to purely VBB CMS

If that server load is constant then I've experienced similar things with Joomla 1.0.12 after adding modules that provided an endless loop. However this may not be your situation as recently as yesterday I found a few sites on one of my servers under DOS attack in an attempt to crack in and steal their template inventory. Such things happen. I'd suggest that if you do admin your own server that you setup iptables to reduce the likely success of such attacks and block every single port that could cause harm. Here is a copy of my iptables file from my old server. NOTE the IP's allowed to access the server are limited to my two static IP's.

*filter
:INPUT DROP [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [3:364]
:udp_out - [0:0]
-A INPUT -s 127.0.0.1 -i lo -j ACCEPT
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -s 216.100.224.128/255.255.255.128 -j ACCEPT
-A INPUT -s 68.045.116.208/255.255.255.0 -j ACCEPT
-A INPUT -p tcp -m tcp -m multiport --dports 21,110,143,25,53,80,443,2082,2084,2086,2087,2095,3 306,6666,9090 -j ACCEPT
-A INPUT -p udp -m udp --dport 53 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 2083 -j ACCEPT
-A INPUT -j LOG --log-prefix "DROPPED PACKET: "
-A OUTPUT -d 216.120.0.0/255.255.0.0 -p udp -m udp -j ACCEPT
-A OUTPUT -p udp -j udp_out
-A udp_out -m limit --limit 30/sec -j ACCEPT
-A udp_out -m limit --limit 1/sec -j LOG --log-prefix "OUTBOUND-UDPSTOP "
-A udp_out -m limit --limit 30/sec -j ACCEPT
-A udp_out -j DROP
COMMIT