I've spent the last several months working on a huge upgrade of a couple dozen websites. The upgrades include modifying Apache so that visitors who arrive at links pointing to mysite/World/New_York are redirected to mysite/world/new-york. In other words, all my links now default to lower case, and underscores are replaced with dashes.
Unfortunately, publishing it has been an endless series of disasters. My websites are now all crashed, and the server is unbelievably slow. It takes pages forever to load (if they load at all), and I can scarcely publish files online.So the following notice sent to me by my webhost got my attention.
IT appears your own server IP is making GET requests to Apache, causing excessive loading and causing service failures. On today's date, your IP made almost 6,000 connections to Apache:<br><br>
I currently have a web VPS hosted with FDCServers.net and after 5 days of switching to it i am getting massive HTTP requests. When i login to WHM and hit apache status i have many requests per second by multiple IP's that are going to pages that simple don't exist. Currently my hostname for the server is set at web-01.optical-hosting.com which is what the requests are being sent to. I am also having a DNS issue because when i put http://web-01.optical-hosting.com in the web browser it displays the first account's site under "list accounts" in cpanel. Can someone please help me fix both of these issue's? i will post an apache log in a second post as it is long. Also, these are from overseas. please someone help me with this i have Aim and Msn.
My Linux Server's Http Daemon (Apache) would stop serving websites ever so often, as soon as apache is restarted the error fixes iteself only to resurface within few hours.
The apache process would still be running i.e. apache does not die but no websites hosted on my server would be accessible from browser. And when this happens the apache logs do not log any http requests.
Instead when this happens all http requests to my server would be redirected to some weird Trojan website and my Norton Antivirus would show an Alert/Warning, for example; "Browser exploit at www.xxx.xxx was blocked" Risk Name: MSIE WebViewFolderIcon ActiveX Control BO
or another error like; "Auto-Protect has detected Trojan.Fakeavalert".
At first i thought the problem could be with my Laptop/ISP so i logged on to the server via SSH and opened try to open a website using command line "lynx mywebsite.com" and it shows following error; "Alert!: HTTP/1.0 503 Service Unavailable".
Now if i assume my laptop were to be infected, then as soon as i restart my apache and visit mywebsite.com eveything returns to normal with no such warnings. Why do i see those norton error messages only when apache is down with 503, and when apache is down with 503 how come the http requests always get redirected to some suspicious websites and nothing gets logged in apache error log?
I think my server is being attacked causing http to get unresponsive and thereafter http requests to my server are redirected to some malicious website, is this correct?
Also, i suspect this is a php script exploit as some customers have reported that google have blocked their website due to security reasons, i found <iframe> tage inserted in some php pages which i fixed.
Also, another thinh i noticed; when apache responds with the 503 it is referencing PHP 5.1.4 in the header response:
[root@]# curl -I xxx.xxx.xxx.xxx (my server ip) HTTP/1.0 503 Service Unavailable Server: Apache X-Powered-By: PHP/5.1.4 Retry-After: 20
I am running PHP 4.3.9m why does apache responds with PHP 5.1.4 when this 503 error surfaces?
Also, since my apache was dowan with 503 error a customer mailed in today saying; "It seems that my site www.xxxx.com is regularly down, and the winlogon virus is involved."
I suspect this is again due to the fact that http requests start getting redirected?
I'm running Apache 2.4.4 on Windows Server 2008 R2. It's already happened many times that Apache stopped responding to requests. The last entry in the error.log:
[Wed Mar 27 06:22:07.043600 2013] [mpm_winnt:notice] [pid 1736:tid 256] AH00354: Child: Starting 64 worker threads. [Wed Mar 27 06:52:34.521200 2013] [mpm_winnt:error] [pid 1736:tid 1656] AH00326: Server ran out of threads to serve requests. Consider raising the ThreadsPerChild setting
I recently upgraded my Apache 2.2.22 installation on Win 8.1 to 2.4.9, making all necessary changes (I believe) to the conf files. I am puzzled that two files in the format authdigest_shm.xxxx now appear in my logs directory when the server is restarted. (Edit: there is also no httpd.pid file)I assume this is to do with running digest authentication, but is a new phenomenon since the upgrade.what conf file setting(s) have I screwed up?!
Is it possible to make these two work together? I can't seem to find any way to let Apache read /home/<username>/public_html without disabling selinux entirely.
I know you can do "chcon -t httpd_sys_content_t -R $HOME/public_html", but it seems like it would be a pain when adding users, especially if someone decides to delete their public_html and make a new directory.
Is it possible to create an exception to let httpd do whatever it wants?
I have a dedicated box with softlayer and I have noticed at varying times the past few months that with sites we host, sometimes the connection times out (I'll try to access like 5 or 6 sites within 30 seconds or so and they all drop, then a minute later they load fine).
I opened a support ticket and they said it usually has to do with the # of requests Apache can handle, and that this can be modified. They stated they could: "tweak the apache configuration file in this server that can make it possible to handle more requests."
So my question is what should the # of requests be set to? (I'm not sure what it is now, but I assume whatever the default # is).
I have Apache 2.4.2, OpenSSL/1.0.1c, on Windows Web Server 2008 R2 (64 bits)
After 12 hours of heavier load, the SSL requests stopped working/being answered. However if you requested the same page via http instead of https, it worked fine. Restarting the Apache server fixes this, for a while. Again after a few hours of traffic, the https requests stopped working again. I checked the logs, and nothing notable, the mod_ssl entries just...
The site is called only by client developed with Delphi 2007 (CodeGear user-agent). Delphi client use THTTPRIO for sending HTTPS request to SOAP.
So I just upgraded Apache 2.2.22 to Apache 2.4.3 and made sure to go through all the options that had changed and update the conf file accordingly. This included adding the cache module for SSL and changing the SSLMutex option over to Mutex default ssl-cache. We also turned off SSLCompression due to the CRIME attack vulnerability.
We use apache strictly as a loadbalancer to 2 tomcat servers via mod_jk. Apache serves no static content at this time.
After being deployed, everything worked fine until later in the day. After 3 hours of heavier load (our site only takes significant traffic during business hours), the SSL requests stopped working/being answered. However if you requested the same page via http instead of https, it worked fine.
Restarting the Apache server fixes this, for a while. Again after a few hours of traffic, the https requests stopped working again. This time I turned the loglevel up to debug and restarted the Apache server.
As traffic slowed down it took another 6 or 7 hours before SSL requests stopped working again. I checked the logs, and nothing notable, the mod_ssl entries just... stopped. (I don't know for sure its ammount of traffic related, it just seems that way)
I have tried reproducing this in a lab, but have not been able to get it to happen on the lab server.
OS: Windows Server 2008 R2 Apache: 2.4.3 vc9 build with OpenSSL 0.9.8 downloaded from apachelounge.org Mod_JK Version 1.2.37 vc9 also downloaded from apachelounge.
I have a little problem (on my Raspberry) with the maximum concurrent connections.When I open multiple tabs of a webpage which keeps persistent connections, apache is unable to serve more requests.Here is the (shortened) mod_info output (which also takes some time till there is a process kind enough to serve the request):
Code: Server Version: Apache/2.4.10 (Raspbian) OpenSSL/1.0.1k Server MPM: prefork 5 requests currently being processed, 9 idle workers
I have an Apache Server (2.4.3) and a Tomcat Server (7.0.36) and have some Java Applications deployed.Everything works fine, but when we start a quite long Ajax process, I see in my Java Application, that a Ajax request is received and starts processing - everything fine. But during processing of the first request, I see a second request starts after 5 minutes.
I'm looking to pass the entries to a web form, via Apache, to an external process (listening on a port say 4321) running on the same host as Apache.Is there a way to "coerce" Apache into doing this?
So I've got a problem where a small percentage of incoming requests are resulting in "400 bad request" errors and I could really use some input. At first I thought they were just caused by malicious spiders, scrapers, etc. but they seem to be legitimate requests.
I'm running Apache 2.2.15 and mod_perl2.
The first thing I did was turn on mod_logio and interestingly enough, for every request where this happens the request headers are between 8000-9000 bytes, whereas with most requests it's under 1000. Hmm.
There are a lot of cookies being set, and it's happening across all browsers and operating systems, so I assumed it had to be related to bad or "corrupted" cookies somehow - but it's not.
I added "%{Cookie}i" to my LogFormat directive hoping that would provide some clues, but as it turns out half the time the 400 error is returned the client doesn't even have a cookie. Darn.
Next I fired up mod_log_forensic hoping to be able to see ALL the request headers, but as luck would have it nothing is logged when it happens. I guess Apache is returning the 400 error before the forensic module gets to do its logging?
By the way, when this happens I see this in the error log:
request failed: error reading the headers
To me this says Apache doesn't like something about the raw incoming request, rather than a problem with our rewriting, etc. Or am I misunderstanding the error?
I'm at a loss where to go from here. Is there some other way that I can easily see all the request headers? I feel like that's the only thing that will possibly provide a clue as to what's going on.
I have been trying to solve a big problem for the last 2 weeks with one of our servers.
The client using our system (web based w/ apache and php) is a contact center firm. They have about 120 operators, all connect to our websever with the same IP.
We have been suffering DoS attacks from some of these operators. This are simple, browser attacks , namely 5 or 10 operators will just hold F5 key and bombard the server with requests when they shouldnt.
We did manage to produce a php protection which will recognize the multiple requests and blacklist the user, but its "too late" because the request have already been sent and processed by the webserver.
We use the user ID in the system to control who should be blacklisted, so this is all dependent on our own authentication.
Ideally, we need something EXACTLY like mod_evasive, but for rejecting single requests instead of blocking the IP. Exemplifying : if a user calls the same url, 5 times, in a 3 second spawn, we will reject every next request for 30 seconds, but only the requests by that user.
If the webserver can make any use of it, the user id is stored in a cookie.
I'm trying to prevent unnecessary GET requests from being processed by my CMS that originate from mutating IP address locations. This is sucking up server resources when the request is processed by the app, and so if possible, I'd like to block them with HTACCESS so that the request is stopped before anything is intensively-processed.
What happens is that an IP address will make a GET request for, say, "blah/test" or "blah/test2" but nothing else (no site assets like images or CSS/JavaScript files or even other pages). After this request, another IP address will then make an equivalent kind of request, and so on, and so on... All of them have similar if not identical user agent strings but they're always worthless requests that do nothing but waste CPU and RAM. I'm assuming it's just some idiotic SPAM bot because of this.
I was wondering I've been having problems with getting my web server going.
I'm using Apache 2 on my Windows XP SP2 machine. I have a Linksys WRT54GX2 router, and I have Charter 3MB Cable internet. I already called charter to see if they allowed web servers and they said they do. I also asked if they block ports, and they said they don't.
Now my problem... So, I originally thought maybe charter blocked port 80, so I used NO-IP to work around that, I did port forwarding through that. Well, I used there tool canyouseeme.org and it said it couldnt read any ports i put in.
All my firewalls were off and i had my router firewall off. I even put my computer in the DMZ part of my router. I'm about to see if i can connect my modem directly to my computer without having a problem but i wasn't able to a bit ago. Anyone got any clues to waht i could do if nothing changes when i put my modem to my computer.
Its quite a 'powerful' one (Q6600, 2GB, 2x160GB). It will be running Windows Server 2003 Standard edition.
I would also like to make a test 2003 installation on the server itself and most likely a Linux Ubuntu) installation too.
Now VPS looks good, but I have some questions about it.
- Can I run 2003 (virtual in VPS) with the same SPLA license?
- Is it possible to give the power of one core of the CPU (since I got four) to a VPS? (so it doesn't stress other cores)
- For example, I host an application on port 5000 (random chosen ) on the non-VPS system, is it possible to host the same application in the VPS system on the same port with an other IP address assigned to it?
- Whats the best (free if possible, shouldn't have many options (just an on/off switch )) way to make a VPS in Windows?
- Is it a problem with servers of these days to push the 'maximum' (or like 80%) out of the network connection (a gigabits or 100MBits)? Are the server response response times (pings) acceptable for gaming when its under such a load?
Let's say you ordered new server,do you make active same moment(install httpd server and all other components)or you running test before like memory and hardware test? If yes,which programs you would recommend to test fully hardware?
my server is still effed up from the MPack attack that I received.
I just received the following email, does anyone know what this means or how it could be done? The client IP is mine, so some how my server is sending that request?
I was able to successfully delete all the files, but how do I now get rid of the directories themselves? When I do: rm -fr "/arcade/images/. /" and then locate ". " I still get:
There seems to be some problem with my server, none of the websites hosted on my server are accessible, the http requests either return a blank page or a page with a red quare on the upper left hand corner.
I am not sure if this is some kind of infection or DNS problem or a problem with memory apache is taking up as i have thousands of virtualhost entries in my access log accumulated over the years out of which only a few 100 websites i am serving presently, but never deleted the non-exitent virtualhost blocks.
At times the websites are opening but most of the times they are not. And when they do not open my http requets are not logged in apacha access log.
Even the customers have reported the same problem.
Also, just four days back i had a strange issue where all http requests to my server would take me to [url].
I can SSH to server, and everything else is working fine.
I host my DNS with DNSmadeeasy.com , I noticed that I have daily more than 350.000 DNS requests for main domain, This domains got about 80.000 uniqes/day, so this is strange how can there be 350.000 DNS requests/day. Seems that I'll go over the quota because of this.
The TTL for all domains is set to 86400.
Is there a way to discover how its possible ? And also is there a way to do something to make this number lower (DNS requests)
Where is a server's IP address for outgoing requests set? e.g. if a script on the server fetches ip-address.com, the IP that is identified there. A server may have multiple IPs pointing to it, but there's only one that outgoing requests are funneled through. I've tried changing "Main Shared IP" in WHM, but that doesn't seem to affect this.
Is this set server-side, in some setting file - or is this a datacenter thing?
When i try to open any website hosted on my server (around 50 of them) i am being taken to following malware website;
[url] [url] This is a problem with my Limnux server running Apache and not a virus on my local computer as customers from all over are reporting the same issue.
As soon as i restart Apache eveything returns to normal with no such redirects.
I think my server is being attacked causing http requests to get redirected to some malicious website.
This issue would resurface almost every hour and would not go away till i restart apache.
So far my Datacenter techs. have not been able to identify the cause of this.
Yesterday I installed tomcat on a RHEL 4 + cPanel and httpd 2.0.63 server using easyapache3, process was ok, jsp pages are loading fine using http://site.com/example.jsp , but servlets, are not working using http://site.com/example, how ever, if I load http://site.com:8080/example it loads the servlet perfect.
I read something about redirecting all traffict from port 80 to 8080, but you know.. this is a shared server, and that would affect all customers on the server.
So, mod_jk seems to be the only solution, now I read many documents over the web, but no one seems to be working to configure apache2 and mod_jk that is installed using easyapache3 script.
In my httpd.conf file, i have this:
LoadModule jk_module modules/mod_jk.so Include "/usr/local/apache/conf/jk.conf" At jk.conf i have this content: ...
