Connections Limit Reached! Please Try Again Later

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tomk Bodhisattva Joined: 23 Sep 2003 Posts: 7221 Location: Sat in front end of my computer	Posted: Thu Sep 14, 2006 5:58 pm   Post subject: Too many connections. Please try once more later. We've added a mechanism for limiting the number of cuncurrent connections from a single IP accost to assistance foreclose DoS attacks. If y'all have more than ten concurrent connections you will recieve the "Too many connections. Please try again later." 503 error bulletin. If you are getting this message it could be because of your browser settings. If you are using Firefox you can modify the per-server connectedness limit by irresolute the following variable in about:config: network.http.max-connections-per-server The Fasterfox extensions is known to increment this to sixteen (and not change information technology back if the extension is uninstalled). Setting that to a value of x or less should fix the problem. _________________ Search | Read | Answer | Report | Strip
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Kruegi Guru Joined: 09 February 2005 Posts: 406 Location: Clausthal-Zellerfeld; DE	Posted: Fri Sep fifteen, 2006 x:28 am   Post subject: Ii advices: For the admins: Never expect the user to have special browser settings or alter any of these settings to make the website work! For the users: Never alter the browser settings considering a website told y'all to do then! Alltogether it may not be the best solution! Thomas
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tomk Bodhisattva Joined: 23 Sep 2003 Posts: 7221 Location: Sat in front of my computer	Posted: Fri Sep 15, 2006 1:39 pm   Post subject: Kruegi wrote: For the admins: Never expect the user to have special browser settings or change any of these settings to brand the website work! The site works fine equally long every bit you lot don't have too many concurrent connections, otherwise you get a temporary 503 fault. You don't have to make any changes for it to piece of work as it'southward working exactly as expected. If you lot don't mind the errors you don't take to alter anything. Kruegi wrote: For the users: Never change the browser settings because a website told yous to do so! Fine, don't change your settings (although the user already has as the default is 8 ) but don't complain that you lot're getting errors. Kruegi wrote: Alltogether it may non be the best solution! Information technology'southward the best solution we've got and a million times better than the entire forums going downward when nosotros get DoSed (which happens more than y'all'd call back). _________________ Search | Read | Answer | Study | Strip
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slick Bodhisattva Joined: 20 Apr 2003 Posts: 3495	Posted: Sabbatum Sep 16, 2006 12:09 pm   Post subject: Re: Besides many connections. Please try again later on. tomk wrote: If y'all are getting this message it could be because of your browser settings. If you are using Firefox you can modify the per-server connexion limit by changing the following variable in near:config: network.http.max-connections-per-server Please dont missunderstand me, merely I remember its actually a stupid way. I become an "Too many connections. Please try over again later." at every ~second site I load. Isnt possible to work with in the forum! I not want change my settings in firefox (for only this site), considering I love to speedup my connections with an college http.max-connections-per-server value. Please find annother way to prevent DoS attacks. The solution, I dont know if they exists, is find a way to configure the network.http.max-connections-per-server value per domain. Then I will except the limits here.
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Janne Pikkarainen Veteran Joined: 29 Jul 2003 Posts: 1143 Location: Helsinki, Finland	Posted: Sat Sep 16, 2006 12:16 pm   Post subject field: I understand this new limitation completely. As an admin (not here, though) I also go irritated because of all those "download accelerators" and "superstanza überfast spider web browser extensions". On a popular site those pretty quickly add upward at the server side and make more impairment than real utilise. Something like download accelerator if ok, if it fetches the different parts of file from unlike servers - but it sucks if it simply opens 10 connections to Same server, assuming that it would make things speedier. Of course it speeds up if administrators take set per-connection transfer rates, but 10 connections instead of ane? Puh-leez. Aforementioned goes for http requests. sixteen or more concurrent requests to same site at the same time? Hmm... non very nice. _________________ Yeah, I'm the man. At present it's your plow to make up one's mind if I meant "Yep, I'k the male." or "Yep, I am the Unix Manual Page.".
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think4urs11 Bodhisattva Joined: 25 Jun 2003 Posts: 6659 Location: above the cloud	Posted: Sat Sep 16, 2006 12:20 pm   Mail service subject: Please also think well-nigh users backside a corporate proxy or alike. Even with 25 allowed parallel connections to f.g.o i might get bug here due to that. If at all so the ten-forwarded-for header should exist taken in consideration as well. (of grade in that location are a lot of proxies which filter this out) a plain iptables statement (if thats whats been implemented in this case) purely looking at the number of concurrent connections is non the best idea. _________________ Nothing is secure / Security is always a trade-off with usability / Practise not assume anything / Trust no-1, cypher / Paranoia is your friend / Think for yourself
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tomk Bodhisattva Joined: 23 Sep 2003 Posts: 7221 Location: Sat in front of my reckoner	Posted: Sat Sep 16, 2006 v:31 pm   Post subject field: We're looking at a solution for people backside proxies and we're because upping the limit as long as it doesn't cause any problems. _________________ Search | Read | Answer | Report | Strip
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Janne Pikkarainen Veteran Joined: 29 Jul 2003 Posts: 1143 Location: Helsinki, Republic of finland	Posted: Sat Sep 16, 2006 half-dozen:25 pm   Mail service subject: tomk wrote: We're looking at a solution for people behind proxies and we're because upping the limit every bit long as it doesn't cause any problems. Have you tried to throttle on per file-type basis? Like "Allow unlimited connections to everything else except files ending .php". During page loads those browsers which have max-connections upped probably are loading all those pretty pictures and stuff and have only one .php connexion open, at maximum. Right? _________________ Yeah, I'm the homo. At present it's your turn to decide if I meant "Yes, I'thousand the male." or "Aye, I am the Unix Manual Page.".
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tomk Bodhisattva Joined: 23 Sep 2003 Posts: 7221 Location: Sabbatum in front end of my reckoner	Posted: Sat Sep 16, 2006 6:34 pm   Post subject: Janne Pikkarainen wrote: Accept y'all tried to throttle on per file-type basis? Aye nosotros've already got this implemented, basically when you request a page that's one connectedness. _________________ Search | Read | Reply | Report | Strip
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Janne Pikkarainen Veteran Joined: 29 Jul 2003 Posts: 1143 Location: Helsinki, Finland	Posted: Sat Sep 16, 2006 6:43 pm   Post subject: tomk wrote: Janne Pikkarainen wrote: Have you tried to throttle on per file-type basis? Yeah nosotros've already got this implemented, basically when you request a folio that's one connection. Oh. Ok. So that ways you have keepalive connections on? Are the DoSsers using some typical web browser proper name or is the user-agent something identifiable? Restricting by user-agent could assistance for now, at least... though might exist unsafe, too. _________________ Yes, I'm the man. Now it's your plow to decide if I meant "Yes, I'k the male person." or "Yes, I am the Unix Manual Page.".
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think4urs11 Bodhisattva Joined: 25 Jun 2003 Posts: 6659 Location: above the cloud	Posted: Sat Sep xvi, 2006 7:48 pm   Post subject: Janne Pikkarainen wrote: Are the DoSsers using some typical web browser name or is the user-agent something identifiable? Restricting by user-amanuensis could aid for at present, at least... though might be unsafe, too. uhh, please don't fifty-fifty think loud about such snakeoil 'solutions - from a security point of view this is fifty-fifty less useful than mac filtering on wep/wlan is. _________________ Nothing is secure / Security is always a trade-off with usability / Do not assume anything / Trust no-one, null / Paranoia is your friend / Recollect for yourself
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thumper Guru Joined: 06 Dec 2002 Posts: 538 Location: Venice FL	Posted: Sat Sep 16, 2006 nine:37 pm   Post bailiwick: I've never made any changes to how many connections konqueror makes, and I go the bulletin every *other* click while browsing different bulletin threads, and it's to the point of making the forums no longer usable. AH HA!!! Plant out why. I have a addiction of using my dorsum push, when I do and click on a new thread information technology happens... Now having to relearn habit grown over many years really tin can piss a person off. George
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Earthwings Bodhisattva Joined: 14 Apr 2003 Posts: 7753 Location: Germany	Posted: Sun Sep 17, 2006 vii:30 pm   Postal service subject: Repeating here what I already said on IRC: I remember the number of connections allowed should either be increased to something >50 or the whole extension be dropped. It sucks, drives users away and has little benefit. _________________ KDE
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klieber Bodhisattva Joined: 17 Apr 2002 Posts: 3657 Location: San Francisco, CA	Posted: Mon Sep xviii, 2006 11:24 am   Post subject: Re: Too many connections. Delight try again later. slick wrote: Please dont missunderstand me, simply I call back its really a stupid mode. I become an "Too many connections. Please attempt again later." at every ~second site I load. Isnt possible to work with in the forum! I not desire change my settings in firefox (for just this site), because I beloved to speedup my connections with an higher http.max-connections-per-server value. Please observe annother manner to prevent DoS attacks. Don't you lot get the fact that information technology's exactly those http.max-connections-per-server settings that contribute to the forum getting DoS'd? When the forums go down, they go downwardly for everyone. Nosotros (the admins) then take to a) discover the forums are down (we by and large become alerts from our IRC bot nigh this), b) log in to the server, c) encounter which retard is causing the problem (it's very rarely deliberate) and so d) ban their IP accost. During that time, nobody tin can browse the forums. Later, nosotros often take to deal with the "why can't I admission the forums" e-mail from said retard who can't figure out why he of a sudden can't access our site. All of this takes a considerable corporeality of fourth dimension. This forum has always put the all-time interests of the community above the (selfish) desires of a few individuals and we volition keep to do so. --kurt _________________ The problem with political jokes is that they get elected
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slick Bodhisattva Joined: 20 Apr 2003 Posts: 3495	Posted: Fri Sep 22, 2006 three:26 pm   Post bailiwick: I understand the problem, merely I hope there will be a meliorate solution. I think its not a expert style to say the users what they accept to do. (And an little bit higher http.max-connections-per-server isnt a law-breaking) In the other hand, for instance, anybody want to apply freenet, he read the FAQ und read this http://freenetproject.org/faq.html#connections wrote: Why does Freenet only download i or two files at a time? Many browsers limit the number of simultaneous connections to something far as well low for efficiently browsing Freenet (since Freenet pages frequently have much higher latency than web pages). This can usually exist reconfigured. For example, for Mozilla, create a file with the post-obit contents chosen user.js in the directory with prefs.js, or append to an existing user.js: user_pref("network.http.max-connections", 200); user_pref("network.http.max-connections-per-server", 100); user_pref("network.http.max-persistent-connections-per-server", x); user_pref("network.http.max-persistent-connections-per-proxy", 50); Annotation that these settings volition cause mozilla to utilise more connections for all your browsing, which may not be desirable from a network congestion point of view; volunteers to brand mozilla allow this sort of settings to be set per host would be welcome... Later he changed the settings he was not able to use the gentoo-forum. In this case he first has to understand the problem (and I mean information technology isnt easy to understand for an noop for instance) and and so he must found a solution, for example employ unlike browsers for freenet and forums.gentoo.org or use browser-profiles or ... or ... I mean, if you want really want to do this, it will be overnice there is not the brusque "Too many connections. Please try once again later." message only. Improve there is an short statement whats up. At the first time I cherry-red the message I checked my network, browse my logfiles and searching the failure on my computers because I cant empathise it.
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think4urs11 Bodhisattva Joined: 25 Jun 2003 Posts: 6659 Location: higher up the deject	Posted: Fri Sep 22, 2006 7:43 pm   Post subject area: slick wrote: I mean, if you want really want to do this, it will be overnice at that place is not the short "Too many connections. Please try again later." message simply. Better there is an short statement whats up. At the first time I red the bulletin I checked my network, scan my logfiles and searching the failure on my computers considering I cant understand it. I fully agree with slick here. Even for someone like me as beeing networking professional the mistake message when seen the first time was/is misleading. Actually my first idea was 'uups, the forums get DoSed at this very moment, now hurry to observe some of the admins to inform him well-nigh this'. Not too far from the real issue just otoh non fifty-fifty close to what it is about... From a normal users point of view there'south simply no take chances to come to the conclusion his own browser settings are the event hither. Merely equally reference have a expect at how dnsstuff.com handles such issues - they give back a clear error massage stating that e.g. fasterfox with as well aggressive optimization settings can exist the problem. (plus the piddling item dnsstuff handles this better when behind a proxy but the forums didn't/don't) _________________ Nothing is secure / Security is ever a trade-off with usability / Do not assume anything / Trust no-1, nothing / Paranoia is your friend / Recall for yourself
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slick Bodhisattva Joined: twenty Apr 2003 Posts: 3495	Posted: Sat Sep 23, 2006 eleven:51 am   Post subject: At this moment I get an 503 with http.max-connections-per-server=10 while browsing (normal) the forum.
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dmitchell Veteran Joined: 17 May 2003 Posts: 1159 Location: Austin, Texas	Posted: Dominicus Sep 24, 2006 5:20 am   Post subject: How can I limit the number of connections under Konqueror? _________________ Your argument is invalid.
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dos14hk n00b Joined: 12 Jul 2006 Posts: 41 Location: Hong Kong	Posted: Sat Oct 07, 2006 12:27 am   Post subject: Besides Many Connections : Delight try again later [SOLVED] Recently i've been getting this on going to Gentoo forums, regularly (about 50-75% of the time): As well Many Connections : Please try again later Is it me or are the forum servers choking? _________________ GIGABYTE GA-G1975X-C | Pent(D)3GHz | FSB:800MHz | 2GB:DDR2:667MHz | Seagate 80G SATAII x 2 : RAID 0 | Gentoo ~x86 DEV 2007.0 Desktop | Last edited by dos14hk on Sat Oct 07, 2006 1:25 am; edited one fourth dimension in total
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dmitchell Veteran Joined: 17 May 2003 Posts: 1159 Location: Austin, Texas	Posted: Sabbatum October 07, 2006 i:xi am   Mail service subject area: Run across this thread. _________________ Your statement is invalid.
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dos14hk n00b Joined: 12 Jul 2006 Posts: 41 Location: Hong Kong	Posted: Sabbatum Oct 07, 2006 one:25 am   Post subject field: Code: dmitchell Many thanks. _________________ GIGABYTE GA-G1975X-C | Pent(D)3GHz | FSB:800MHz | 2GB:DDR2:667MHz | Seagate 80G SATAII x 2 : RAID 0 | Gentoo ~x86 DEV 2007.0 Desktop |
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jmbsvicetto Moderator Joined: 27 Apr 2005 Posts: 4734 Location: Angra do Heroísmo (PT)	Posted: Sat Oct 07, 2006 1:38 am   Post field of study: Moved from Networking & Security to Off the Wall. [mod]This thread should have been fabricated in the GFF forum as this relates to the forums.[/mod] How-do-you-do. That probably ways that you're running something like fasterfox which opens many parallel connections to the forums. The forums were updated on September 14 to limit DoS attacks. _________________ Jorge. Your twisted, but hopefully friendly daemon. AMD64 / x86 / Sparc Gentoo Assistance answer || emwrap.sh
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jdmulloy Tux's lil' helper Joined: 24 Dec 2004 Posts: 139 Location: Massachusetts, U.s.	Posted: Sun October 15, 2006 viii:00 pm   Mail subject: Second this dmitchell wrote: How tin I limit the number of connections under Konqueror? I'thousand having the same trouble. I've serached the forums, google, kde-forums.org and kde bugzilla and no answer. How the hell do I prepare this, it'due south pissing me off.
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Earthwings Bodhisattva Joined: 14 April 2003 Posts: 7753 Location: Federal republic of germany	Posted: Sunday October 15, 2006 10:09 pm   Mail service field of study: Re: Second this jdmulloy wrote: dmitchell wrote: How can I limit the number of connections under Konqueror? I'grand having the same trouble. I've serached the forums, google, kde-forums.org and kde bugzilla and no answer. How the hell practice I fix this, it's pissing me off. Question remains whether this should exist "stock-still" on your side or in the server configuration of f.g.o. _________________ KDE
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jdmulloy Tux's lil' helper Joined: 24 Dec 2004 Posts: 139 Location: Massachusetts, USA	Posted: Mon Oct xvi, 2006 12:50 am   Post subject: Re: 2nd this Earthwings wrote: jdmulloy wrote: dmitchell wrote: How tin can I limit the number of connections nether Konqueror? I'thou having the aforementioned trouble. I've serached the forums, google, kde-forums.org and kde bugzilla and no respond. How the hell do I fix this, it's pissing me off. Question remains whether this should be "fixed" on your side or in the server configuration of f.thousand.o. Read what dmitchell said. I want to fix this on my end. I can't effigy out how. I don't desire to exist greedy but I tin can't figure out how to tell konqueror to behave.
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