OpenVZ Forum


Home » General » Support » Cant block DDoS to a VPS? How to do it?
Re: Cant block DDoS to a VPS? How to do it? [message #50854 is a reply to message #50852] Sun, 17 November 2013 02:16 Go to previous messageGo to previous message
grep is currently offline  grep
Messages: 34
Registered: November 2013
Member
When you block IPs on HN Node it will not affect openvz containers.
You need to block bad IPs on container. Maybe you can block on HN when drop IPs to forward chain and not to input.

If
212.185.56.58 - - [16/Nov/2013:21:32:49 +0000] "-" 408 0 "-" "-"
Is an attacking IP it seems to be very simple HTTP flood which you can block it easy. Just write a script which parse the http log and check the num of connections which call /. If greater than x then drop. Or use mod security, but this will use more cpu.
Or just block all traffic which has no referrer.

And it seems that bad IPs just come from one subnet - block it & write abuse with tcpdump file as proof.

If you delete the IP from your Hostsystem the traffic should be nullrouted. If not then ask your dc, maybe they 'hard-route' the IP to your server.

If you want to try migrating the DDoS check out litespeed and nginx. But your HN must have enough network speed and if ddos goes to hard then you may get in trouble with your dc.

Quote:

::1 - - [16/Nov/2013:21:32:59 +0000] "OPTIONS * HTTP/1.0" 200 152 "-" "Apache/2.2.14 (Ubuntu) (internal dummy connection)"
FULLL of this
normal.

Report message to a moderator

[Message index]
 
Read Message
Read Message
Read Message
Read Message
Previous Topic: /usr/bin/vzdump: No such file or directory
Next Topic: Vps with VPN
Goto Forum:
  

[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Fri Dec 12 15:26:23 GMT 2025

Total time taken to generate the page: 0.18096 seconds
Powered by FUDforum Powered by Virtuozzo Containers