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Apache Error Wpad.dat

It's possible that a virus may have caused them to do this; likely, if the machines making the query are extremely numerous and in diverse subnets, this is what is up. Obviously it isn't blocked from > the *machine*, and I apologize if you thought that was what I meant. It >> will presumably continue waiting up to some timeout. They've never been anything but trouble. –Evan Anderson May 23 '13 at 22:03 Ok, I have now added a wpad subdomain to all my domains in my DNS that his comment is here

Item > #6 might be spread across several packets, in which case the Remote will > send an ACK (#7) for each packet. > > Your iptables rule matches #4, but logging nginx proxy share|improve this question edited Aug 14 '13 at 0:29 asked Aug 14 '13 at 0:13 edelwater 1958 1 A similar question was asked on Server Fault: serverfault.com/questions/510396/being-flooded-by-wpad-dat In consequence, they are likely searching hierarchically. subnet netmask { range; ... news

Turned out they had grown to 12GB of accesses from tons and tons of different hosts trying to access /wpad.dat on one of my Vhosts. The client should not use a default host. They should be used in the order shown below, but clients are onoly required to use DHCP and well known aliases. That should break things enough whoever is causing the problem might take the time to fix it. –Zoredache May 23 '13 at 21:23 1 @Sandman - The WPAD.DAT file needs

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed It hasn't so far. Opera Documentation KDE In System Settings, search for proxy, the first section is the proxy settings. Right? -- Sandman[.net] Richard Kettlewell Guest Posts: n/a 05-24-2013, 10:04 AM Sandman <(E-Mail Removed)> writes: > Richard Kettlewell <(E-Mail Removed)> wrote: >> Sandman <(E-Mail Removed)> writes: >>>

SOCKS host:port The specified SOCKS server should be used. In about an hour, this has blocked 45k requests, or about >>> 750 per minute >> >> While this will send a TCP reset to the misbehaving client, AIUI it will Now I know my ABCs, won't you come and golf with me? NoteThis setup will be used for all KDE applications including those using protocols other than http:// so make sure you handle those in the PAC file.

Blocking it in apache seemd stupid, it would still > > process the requests, so to iptables: > > > > iptables -I INPUT -p tcp --dport 80 -m string --to WPAD uses several methods for finding out location of the PAC script. Safari (Windows) Safari utilizes the Windows proxy settings as used in Internet Explorer. So we don't get anymore File does not exist errors.

You can remove the DNS record, or reconfigure all of the computers. –Michael Hampton♦ May 23 '13 at 21:52 | show 13 more comments Your Answer draft saved draft discarded Meaning, are these flooding some form of colleteral traffic from normal surfing? to or something. Connection gets reused (from #4) or closed (FIN - FIN/ACK) Often #3 and #4 are merged, and potentially #5 and #6 could be, too.

How can I easily find structures in Minecraft? this content Dynamic Host Configuration Protocol (DHCP) Service Location Protocol (SLP) "Well Known Aliases" using DNS A records DNS SRV Records "service: URLS" in DNS TXT records DHCP (Dynamic Host Configuration Protocol) Clients Proxy Auto Configuration (PAC) The involves creating a javascript script to return which proxy servers to use. This tutorial shows you how to set up automatic proxy detection.

FILE /etc/apache2/vhosts.d/00_server1.example.org.confNameVirtualHost Listen NameVirtualHost ServerName server1.example.org ServerAlias wpad.example.org DocumentRoot "/var/www/example.org/htdocs" AllowOverride All Options MultiViews FollowSymlinks SymLinksIfOwnerMatch IncludesNoExec Options -Indexes Order allow,deny Allow from all So all my clients point their subdomains to cluster.atlascms.se, which in turn points them to the current IP (master server of failover server). For example: Client Name: laptop.office.corporate.example.org First Server tried: http://wpad.office.corporate.example.org/wpad.dat Second Server tried: http://wpad.corporate.example.org/wpad.dat Last Server tried http://wpad.example.org/wpad.dat Creating the PAC file For details on which commands are supported in this file, weblink Web Server The web server should be configured to serve a PAC file, wpad.dat, with the correct MIME type.

You should be able > >> >> to use netstat to confirm or refute this. > >> > > >> > Thank you for your reply. Blocking these IP-number, would I also be blocking their normal traffic to the server? So: www.client.com -> CNAME -> cluster.mydomain.com -> A -> Which means that every visitor to my sites has their web browser first look up www.client.com to find cluster.mydomain.com which in

You should be able > >> to use netstat to confirm or refute this. > > > > Thank you for your reply.

Things that will point a host at a particular location for wpad.dat include domain settings, the domain name option in DHCP replies, and an explicit setting in the web browser to Click the Advanced section, click Settings under Connection. So, if a windows PC is a member of a domain c.d.e.com, it will look for WPAD.dat in: http://wpad.c.d.e.com/wpad.dat http://wpad.d.e.com/wpad.dat http://wpad.e.com/wpad.dat http://wpad/wpad.dat Chances are that somewhere, someone has a domain which References are: https://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/c93b2856-76c4-4348-9d46-8a60612c3b23.mspx?mfr=true and en.wikipedia.org Web Proxy Autodiscovery Protocol The Web Proxy Auto-Discovery Protocol (WPAD) is a method used by clients to locate the URL of a configuration file using DHCP

Each option will be tried in turn until one is useable. Basic proxy.pac You can download the source for this example athttp://www.davidpashley.com/articles/proxy.pac function FindProxyForURL(url, host) { if (isInNet(host, "", "")) { A sample size of the latest 500 requests (i.e. In String, type URL of PAC file in format: http://webserver.example.com/wpad.dat Right-click Server Options and click Configure Options. check over here What is this syntax inside a GNU C statement expression extension?

Why are some programming languages turing complete but lack some abilities of other languages? Apache Web Server Create .htaccess file. DHCP: DHCP servers can provide information where a pac file is available WPAD: following a set of conventions, clients can automagically obtain the correct pac file for the network they're currently This still had a slight disadvantage in that you needed to specify the script location.

The DNS server is on the machine that is currently being flooded on port 80. All my clients are told to use a CNAME pointer for their servers. Click Start, select Programs, and then click Administrative Tools. So, troubleshooting some more.

Expand the User Configuration > Windows Settings > Internet Explorer Maintenance tree. This allowed you to specify a javascript script which told the browser which proxy to use. Now, to counter this: 1. Now, cluster.atlascms.se is my DNS failover host.

Blocking it in apache seemd stupid, it would still process the requests, so to iptables: iptables -I INPUT -p tcp --dport 80 -m string --to 70 --algo bm \ --string "GET You redirect all their browsers to a proxy you control and MiTM their traffic. –Evan Anderson May 23 '13 at 21:21 3 I would strongly be tempted to put up Example: /usr/bin/pactester -p proxy.pac -u http://www.gentoo.org -h gentoo.org PROXY proxy.example.org:8118; DIRECT /usr/bin/pactester -p proxy.pac -u rsync://rsync.gentoo.org -h gentoo.org DIRECT If the return value of the script is DIRECT, the client won't www.client.com) to the domainname "cluster.mydomain.com" as a CNAME record.

Once detection and download of the configuration file is complete, it can be executed to determine the proxy for a specified URL. I do run a DNS server on the machine. Mind you, I don't get any HTTP requests in Apache, but it does increment the requests number in a rate faster than the normal requests I see. For instance, it might turn out to be some big company example.se in which case you can go find their network admins and yell at them.

Google Chrome (Windows) Like Safari, Chrome utilizes the Windows proxy settings as used in Internet Explorer.