-2
votes
2answers
85 views

Is it possible to prevent DDoS attacks? [closed]

I recently read that certain industries—including the one I work in—are more likely than others to be targeted by a DDoS attack. Can you give me some tips on how to prevent DDoS attacks?
1
vote
0answers
42 views

Multiple DDOS protection interfaces merging on one TS server

The problem I have is I have 3 DDOS protection interfaces from a multi homed DDOS protection solution and teamspeak is refusing to return packets via the correct interface (aka the one that sent it ...
2
votes
1answer
249 views

Outbound DDOS Attacks Being Run from Our Server

We run a mail server (postfix/dovecot/centos 6.4). The hardware is based on a supermicro chasis with IPMI features. It also runs a web interface for accesisng mails(Apache web server ) Recently our ...
0
votes
0answers
147 views

server reached MaxClients setting, consider raising the MaxClients setting

this is my mod-status report. Do you think I could be under a DDOS attack? Thanks Current Time: Monday, 14-Oct-2013 18:56:57 CEST Restart Time: Monday, 14-Oct-2013 18:54:48 CEST Parent Server ...
-1
votes
3answers
264 views

How to fight request spam (DDOS i guess) on CentOS server [duplicate]

lately i'm trying to fight DDOS on my CentOS 6.4 server. I have installed CSF and I've set it quite strictly. Yet there is a URL that have like 1000 requests and max 2 per IP (smart ddos-er I guess). ...
-1
votes
1answer
130 views

Can the netstat command show what specific website a user is on? [closed]

I'm currently under an Apache DDoS attack and have 13 websites shared under one server. I can use the netstat command to see the # of connections per IP, but not what website they're actually on. I ...
-1
votes
1answer
645 views

CentOS server RAM usage 100%

I am using Linux CentOS 5.8 VPS. But my site is so slow in last two days. When i cehcked in server's web control panel; RAM usage is 99-100 %. But when i write "top" command; there is any usage on ...
1
vote
1answer
323 views

Can you stop a SYN Flood attack with .htaccess?

[Linux - CentOS - Apache - VPS] Last week my servers came under a SYN Flood attack, my hosting provider took some steps and resolved the issue. One of the things that they did was turn on SYN ...
0
votes
1answer
671 views

(D)DOS Deflate Bug/Alternative [closed]

Hi guys I run a busy CentOS webserver (nginx/php-fpm) an to protect it to certain attacks I used http://deflate.medialayer.com/ for a while. I had setup a white-list with 127.0.0.1, my external ...
4
votes
2answers
7k views

Stop DoS attacks with an IP tables rule?

I was wondering if I could prevent small (D)DoS attacks with a simple IP tables rule? By small I mean that they are flooding my web server with about 400+ requests from one or two IP addresses. I ...
0
votes
3answers
5k views

Block All UDP traffic (to prevent ddos) [duplicate]

I have been receiving countless ddos attacks the last couple of weeks. Just now I caught one while I was running iptraf. Normally 99.9% of the packets used on my server are TCP packages, and not UDP. ...
4
votes
3answers
757 views

100mb/s upgrade to 1gbps network - To Prevent DDOS [duplicate]

I have been under constant DDOS attack the last couple of weeks. Now it seems my servers network is being flooded till it just doesn't have space anymore to receive and send normal packages. I run ...
0
votes
1answer
794 views

Multiple DDOS attacks per day [duplicate]

I run a popular tech website, and for weeks my site has been under DDOS attacks. The attacks happen at random times, and often about 10 times per day. Usually the attacks only last a few minutes, then ...
2
votes
1answer
597 views

Fighting DDoS Attack, looking for some advice [duplicate]

So, it appears about 2 IP addresses are overloading my HTTP server (apache) over UDP and I am unable to stop this using IP Tables. I am using CentOS 5. I managed to block some other IP addresses that ...
0
votes
1answer
832 views

Preventing DDOS/SYN attacks (as far as possible) [duplicate]

Recently my CENTOS machine has been under many attacks. I run MRTG and the TCP connections graph shoots up like crazy when an attack is going on. It results in the machine becoming inaccessible. My ...
1
vote
0answers
619 views

Preventing DDOS attacks (as far as possible)

Recently my CENTOS machine has been under many attacks. I run MRTG and the TCP connections graph shoots up like crazy when an attack is going on. It results in the machine becoming inaccessible. ...
0
votes
2answers
201 views

CentOS Server keeps grinding to a halt, then comes back up

CentOS 5.2 LAMP server The server slows down to a point where no services are responding. After a few minutes, it comes back and is running well. The server keeps doing this cycle, what could be ...