Apache Ddos
Feb 25, 2008
how to defend from this attack type?
CSF firewall installed, Dos-deflate installed, and again lot of apache processes
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88.233.53.100 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.235.13.14 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.229.215.146 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
85.106.189.35 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.252.155.246 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
85.108.124.1 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.233.53.100 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.226.149.225 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
78.166.58.95 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
78.167.193.154 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.241.234.16 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.252.156.36 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.228.71.122 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.240.205.51 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.231.168.63 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
78.167.71.2 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.231.32.190 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.228.30.110 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.240.205.51 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
78.167.71.2 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.235.13.14 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
81.215.152.40 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
85.104.35.67 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
81.215.152.40 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
78.165.159.246 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.252.155.246 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
78.166.58.95 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.242.244.121 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
85.104.35.67 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
88.240.205.51 - - [25/Feb/2008:10:15:53 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
78.166.30.163 - - [25/Feb/2008:10:15:48 -0600] "GET / HTTP/1.1" 200 10792 "-" "-"
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Jun 13, 2008
Anybody have good experiences with some software based Apache 2.2 ddos protection. Im trying to find something similar then mod_evasive.
It's just that evasive won't work with Apache 2.2. It actually works, but it does not do what it is supposed to do.
Have tryed many different configuration, but it just won't do it.
After Googling i found out that many have suffered same kind of experiences with mod_Evasive and Apache2.2
I guess it is not working cos we got Peruser there. http://www.telana.com/peruser.php
Means that there is many differend child processes and evasive don't share data between childs.
So suggest me something. This is coming on prodution server with hundreds of domains so it has to be stable, fast and rock solid.
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Mar 8, 2007
What wil be the best way to protect an Apache server from a DDoS attack? Is there an Apache module for this type of problem?
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May 17, 2009
way to secure apache from ddos attack's on centos 5.3.
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Jan 11, 2007
I have a question related DDOS attack. My hosting provider told me that my Server was DDos attacked few days ago. But in those days my server worked fine only apache server was down. The strange fact is that in the same day with this "DDOS attack" one of theyr admins worked something on SSL section of my server and during this operation the SSL hosts were down and httpd worked slow.
Inthe passed 3 months httpd worked very slow and after 2-3 restarts of httpd service the load droped down below 3.00 . I believe theyr httpd service was already with problems and that SSL configuration cause that apache failure in that day with "ddos attack"
I repeat in that day ONLY ssl hosts worked fine and non SSL hosts were down.
It's possibile on DDOS attack that load to be unde 0.5 , SSL hosts to work fine, FTP, Mail and other stuf to work like there is nobody on server (VERY FAST)?
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Nov 7, 2008
it's come under my attention that dragonara.net has been ddosing me today since morning from the ip:
194.8.75.229
What's so ironic about it is that the ip is from a UK DDOS protection site so i'm expecting some email with their services in the next hour or so. Stay clear of them they are fakes and e-terrorists.
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Oct 8, 2009
I am looking for some good ddos protection providers, via protected dns. I've searched on internet, but most of them are really expensive.
Please tell me some ddos protection providers what could help me.(gige is too expensive btw).
And I found some ddos protection scripts. How can a script protected a server from ddos? A sript like CSF or DDoS deflate?
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Apr 9, 2009
I've been getting VERY high packet loss to my VPS for around 10-15 minute periods over the past month or so (No patterns or specific times, totally random when it occurs) with my provider's Parallels Business Automation control panel reporting "Server is down" along with the VZCP on the node being inaccessible. I opened a ticket with my provider and they told me that they experienced a DDoS attack on the node my VPS was hosted on.
However, I get the feeling that they are giving me some crap to stop my pestering them about the packet loss all the time (I mainly use my VPS for providing VoIP services which use UDP so the packet loss is devastating).
Anyone got any views on this?
Also they keep offering to move me to a diffrent node but they say they can only do that by giving me a new IP address and I would have to backup all the data and restore it manually, myself. Any views on this as well?
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Jun 6, 2009
I'm experiencing a significant UDP DDoS at the moment which is aimed at port 80 on my server, it's currently crippling Apache, but only on port 80, https (443) is fine. I've told iptables it drop UDP packets sent to port 80 and have also completely blocked most of the attacking IPs, this has helped, but the webserver is still periodically unresponsive.
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Jun 9, 2008
We are getting ddosed badly.. Last night httpd reached max clients and httpd wasnt able to start up.
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Feb 4, 2008
we had a bad ddos to on of the sites we were hosting, the ip of the ddos was blocked in apf and iptables, but for some reason it still got through we had to have it blocked in the router, we installed CSF into our server hoping for a better firewall does anybody know why apf could not hold back the ip im open to suggestions,
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Dec 9, 2008
I have got pretty big problems with my VPS, some of my sites getting DDoS'd a log. I have no idea why and who DDoSing them
I have csf, apf and DDoS Delfate installed but it seems they can't take those attacks down. I know for mod_evasive but it works only on small attacks, I getting pretty strong attacks
I need some way to configure csf better, what I need to edit in /etc/csf.conf to block IPs if the same IP trying to connect to server more that 10 times. I need everything what I could edit for csf to block IPs faster
About DDoS Deflate, he is configured to works with apf, can I configure it to works with csf and how? How to configure DDoS Deflate better, to block IPs faster
Also, another problem with csf is that when I restart csf(service csf restart) he unblock all blocked IPs and I have to block them again
How to see blocked IPs by iptables?
I running lighttpd at the moment but I thinking to change it with Litespeed(free edition), what do you think about it?
I hope I will get some help here. Aslo,would be interesting to hear how do you guys protecting your servers from DDoS(if you getting DDoSed
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May 27, 2007
we have a 100mbut connection and with a normal traffic we use about 40-50mbit but from friday seem that we are under attack this is the stats from the fastethernet
inbound 20427 ucast pkts/s
outbound 5547.5 ucast pkts/s
inbound 85793.9 Kbit/s
outbound 8211.98 Kbit/s
we have reach also for 4 hours 100mbit and all the server was offline, we have contact the datacenter and they say that not is a ddos attack because the traffic come fom our server and not from outside the net, so look as we have a hacked server that is making all this traffic, how can w found the problem? we have about 130 server on this connection
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Aug 18, 2007
If you were under a DDos attack, what commands would you execute to confirm this?
Is it normal for high traffic sites with 3,000 concurrent apache connections from running this command?
netstat -n | grep :80 |wc -l
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Dec 28, 2007
what would happen if you changed the server IP to 127.0.0.1?
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May 29, 2009
My server is using too many httpd process..I think iam under DDOs attack..I executed the following command..
netstat -an | grep :80 | sort
and the result is this
tcp 0 1491 ::ffff:95.211.10.169:80 ::ffff:213.215.100.110:2263 LAST_ACK
tcp 0 1493 ::ffff:95.211.10.169:80 ::ffff:85.207.126.231:52694 LAST_ACK
tcp ....
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May 29, 2008
The DC installed Squid. It manages the load fine but the php code on my page is cached and doesn't work.
Is there a way to get squid to not cache php? in that httpd can directly call php while squid does everything else?
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Apr 16, 2009
Hey guys If there was a way to have the ips of the dedi change constantly would this help prevent ddos attacks or would there be no difference if the domain was being attacked.
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Nov 6, 2007
OK well today I found out my server was being DDOS'ed
And I know which domain is being attacked with hundreds of IP's. I am running Cpanel / WHM but I have no idea how I can stop this?
Any ideas or suggestions? Maybe redirect the DNS? to a invalid ip? But I'm not sure how i can go about doing that?
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Sep 16, 2007
I have a problem with a customer. For the last 48 hours he has been receiving a massive DDoS at his server. I tried blocking the darn IPs but they keep coming and with several hundreds of connections each:
104 78.157.168.98
125 83.226.157.91
126 89.103.109.65
131 89.12.150.23
135 84.251.196.78
135 86.122.0.135
135 91.127.235.86
154 84.24.14.41
160 193.216.140.101
331 89.151.8.78
419 78.0.103.64
Apache has over 14000 connections. I tried using mod_evasive but didn't do anything and the server has been out without httpd for hours now. Any advices? This is a Hsphere server (I hate it personally) with 4GB RAM and a dual optero 246. I have the mexclients setting at 550.
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Aug 4, 2009
I have a windows server, and today it has a large inbound traffic, so I tried to disable all web service, and after that, the result of netstat -an shows no connection at all, but the server still has large inbound traffic,
Do you have any idea about this?
What should I do now?
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Mar 19, 2008
Our server is in attack since 4 days. Http port busy all the time.
When I type :
netstat -na | grep ":80" | awk '{print $5}' | cut -d. -f1-4 | cut -d: -f1 | sort -n| uniq -c | sort -n | tail -5
It shows :
[root@ ~]# netstat -na | grep ":80" | awk '{print $5}' | cut -d. -f1-4 | cut
-d: -f1 | sort -n| uniq -c | sort -n | tail -5
2 65.19.130.24
2 83.149.120.9
4 204.15.73.243
35 222.254.103.142
5128
[root@ ~]#
I wonder the hidden IP of 5128 ??? How to know it?
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Jul 28, 2009
A user joined our live chat and said if we didn't cancel a domain on our server, he will send us a DDOS attack, and he did so and also did this morning.
Is there anything I can do to prevent this or possibly punish him?
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Jun 21, 2007
The server getting slow with high I/O diskwait then normal, although load is not high.
here is the output of: netstat -anp |grep 'tcp|udp' | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n .................
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Apr 1, 2009
I want to understand the Idea of DDOSING
If I have a server with a a gb /second port so no one can DDOS me ?
or if the hacker have a servers with a gb/ port he can destroy any thing ?
second question
sometimes people hjave ip tables to filter all the packets to the server these people some times go down for ddosing too WHY ? why the IP tables cant filter the packets of this type of DDOSING?
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Jul 29, 2006
My server is getting ddossed everyday, all are at the same time -> 4 am since tuesday.
Cacti is showing 60~70mbit on that time.
Server 'crashed' on thursday (nearly 70mbit), it got back up but the ips (4 out of 5) were not working. Couldnt ping it. So I gave it a reboot and it worked again.
I used to get alot of Brute Force attacks, after I changed port and not allow root login etc etc on Monday, I dont get any attacks anymore ...
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Apr 12, 2009
i had installed anti ddos or firewall,but those are useless.His attacks are such great that The server and all the vps are down now. One told me that I should check the ips and receive ips. The attacker is so skillful .describe the best method to defeat him. Be sides the attacker use diffirenet ips in each attack,I block him by iptables but no use…. His attack occupy all the ram and I have to resetart the server… Now this time his attack lead to shutting all the vps down
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Jan 6, 2009
My website is under ddos attack from some competitors. I don't know yet how big is the attack. The ips of the ddos attack come from all the world.
I have contacted a few hosting companies specialised in ddos proof hosting, unfortunatly the price is so expensive that i cannot afford it.
So i try to find another solution : my website is only aimed to the french people, so maybe is it possible to install a kind of firewall or proxy located before the server to block all the incoming IP adress not from france ? Do you know some websites who can do this and the price ?
I already try do deny the non-french ip in one htaccess file but the ddos attack saturate the server anyway.
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May 25, 2009
i'am looking for a software based ddos protection,some one know something for try to mitigate a ddos or help to get the server rock a solid?And i need to know too where i change the DNS(vhost) of my DEDICATED server.
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Apr 13, 2009
Someone is ddosing us but i don't think is a huge ddos and i need your advise about that.
I own a dedicated server with direct admin.
dual core
2gb ram and 100mbit speed
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Sep 24, 2009
so a guy I know runs a site, it's being hit very hard with a DDoS attack. He's spending about 500 /month to keep his site online. He's using ServerTech, but for the last few days, it's been offline and they have been non-responsive for the most part. I'm guessing they just don't know what to do.
Do you guys have any recommendations for any DDoS protected hosting? He doesn't really want to pay more, if he doesn't have to.
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