[Solved] Maximum number of Login attempts exceeded

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[Solved] Maximum number of Login attempts exceeded

Postby thomasjk » Sun Nov 03, 2013 7:12 pm

I've now received this message twice this morning and each time I am presented with a Captcha. Is this something new is is there something wrong with the login process?
Last edited by Hagar Delest on Wed Feb 05, 2014 8:57 am, edited 1 time in total.
Reason: tagged [Solved].
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Re: Maximum number of Login attempts exceeded

Postby FJCC » Sun Nov 03, 2013 8:03 pm

I just got the same message. The forum got software changes very recently and I expect something is set wrong. I also tried logging into the es forum and I didn't get that message. I'll post a message on the dev mailing list.
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Re: Maximum number of Login attempts exceeded

Postby RoryOF » Sun Nov 03, 2013 8:08 pm

I use persistent log-in and have had no problem (yet!).
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Re: Maximum number of Login attempts exceeded

Postby rudolfo » Sun Nov 03, 2013 8:17 pm

I did receive the same message right now. It was irritating, because I was quite sure that I typed in the correct login data.
But the captcha login and also the pages after the login are using now the secure protocol https. Haven't check it further so far if the plain http pages are still accessable.
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Re: Maximum number of Login attempts exceeded

Postby RGB » Sun Nov 03, 2013 9:17 pm

rudolfo wrote:I did receive the same message right now. It was irritating, because I was quite sure that I typed in the correct login data.
But the captcha login and also the pages after the login are using now the secure protocol https. Haven't check it further so far if the plain http pages are still accessable.

They are not. Look at my previous thread on this subforum: https is now enforced.

I remember something like this happened a couple of years ago. At the time the conclusion was that there was a "brute force attack" trying to gain access to admin and moderator accounts. As far as I can tell, the problem is only present on the EN forums, which makes the attack theory more plausible.
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Re: Maximum number of Login attempts exceeded

Postby Hagar Delest » Sun Nov 03, 2013 9:32 pm

RoryOF wrote:I use persistent log-in and have had no problem (yet!).

+1.

RGB wrote:I remember something like this happened a couple of years ago. At the time the conclusion was that there was a "brute force attack" trying to gain access to admin and moderator accounts. As far as I can tell, the problem is only present on the EN forums, which makes the attack theory more plausible.

+1 (cannot check on other forums).
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Re: Maximum number of Login attempts exceeded

Postby RoryOF » Sun Nov 03, 2013 9:37 pm

There is nevertheless something peculiar happening. We are currently showing 10-12 users; the older forum is at 110 and LibO at 35. Normally we would have 50% more than the older forum and about four times the number on the LibO forum (all figures and estimates very much ball-park).
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Re: Maximum number of Login attempts exceeded

Postby thomasjk » Sun Nov 03, 2013 9:52 pm

What is persistent login? I logout so I can clear the posts I have marked read. I don't want to see them again. Definitely something peculiar happening.
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Re: Maximum number of Login attempts exceeded

Postby Hagar Delest » Sun Nov 03, 2013 10:02 pm

I never logout and the login is set to automatic. It doesn't prevent the read topics to be tagged as viewed. So I only see the new posts (in red).

We used to be indeed at less than 100 during the weekend but less than 15 is definitively strange...
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Re: Maximum number of Login attempts exceeded

Postby acknak » Sun Nov 03, 2013 10:20 pm

I've seen the captcha today as well--each time I've logged in.
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Re: Maximum number of Login attempts exceeded

Postby Hagar Delest » Sun Nov 03, 2013 10:29 pm

I just saw it when logging in the admin panel!
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Re: Maximum number of Login attempts exceeded

Postby thomasjk » Sun Nov 03, 2013 11:15 pm

Time for a fix for this issue. Its just started today for me and Ive seen it every login.
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Re: Maximum number of Login attempts exceeded

Postby acknak » Mon Nov 04, 2013 1:17 am

I just logged out and immediately tried to login again and I got the "too many login attempts" captcha.

If the problem is a password guessing attack, it must be making a fairly high rate of attempts. Maybe just a config problem?
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Re: Maximum number of Login attempts exceeded

Postby RGB » Mon Nov 04, 2013 1:49 am

acknak wrote:I just logged out and immediately tried to login again and I got the "too many login attempts" captcha.

Same here.
acknak wrote:If the problem is a password guessing attack, it must be making a fairly high rate of attempts. Maybe just a config problem?

There is nothing wrong on the ACP... :crazy:
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Re: Maximum number of Login attempts exceeded

Postby /a3 » Mon Nov 04, 2013 2:27 am

I found this thread on phpBB.com that might be useful:
https://www.phpbb.com/community/viewtop ... &t=2176870
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Re: Maximum number of Login attempts exceeded

Postby acknak » Mon Nov 04, 2013 4:54 am

/a3 wrote:I found this thread on phpBB.com that might be useful: ...

Yep. That's it.

I checked the logs: every login after (about) 02 Nov 2013 16:36 is logged as coming from the same IP address.

I've no idea how to fix the problem though; I didn't see any solution mentioned in the linked topic, just a possible cause.
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Re: Maximum number of Login attempts exceeded

Postby RoryOF » Mon Nov 04, 2013 5:32 am

In the linked topic Noxwizard says
Re: Maximum allowed number of login attempts

Postby Noxwizard » Mon Mar 25, 2013 9:10 am
If it's happening for all users, you should check to see if everyone has the same IP (check Who Is Online). If they do, then your host is most likely proxying the requests before sending them to you and not correctly restoring the IP.


which seems to offer a solution, although I don't understand it (I have no knowledge of phpBB).
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Re: Maximum number of Login attempts exceeded

Postby RoryOF » Mon Nov 04, 2013 11:17 am

I am wondering if the reduced number shown as logged in is because we are now getting a count of the actual number at time of query, rather than a total for the past five minutes, as previously.
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Re: Maximum number of Login attempts exceeded

Postby Villeroy » Mon Nov 04, 2013 11:30 am

RoryOF wrote:I am wondering if the reduced number shown as logged in is because we are now getting a count of the actual number at time of query, rather than a total for the past five minutes, as previously.

All the bots out there are out because of the captcha.
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Re: Maximum number of Login attempts exceeded

Postby RGB » Mon Nov 04, 2013 11:49 am

OK, it seems I fixed it. At least for the moment... The problem was that the forum is passing through a proxy now, so every user shows the same ip, and that the maximum number of connections from the same ip was well below the usual number of users. Let's see if it works.
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Re: Maximum number of Login attempts exceeded

Postby Villeroy » Mon Nov 04, 2013 12:36 pm

Well done. Thank you very much.
Please, edit this topic's initial post and add "[Solved]" to the subject line if your problem has been solved.
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Re: Maximum number of Login attempts exceeded

Postby acknak » Mon Nov 04, 2013 1:34 pm

No captcha for me logging in this morning--thanks!
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Re: Maximum number of Login attempts exceeded

Postby Mark Nelson » Mon Nov 04, 2013 3:35 pm

I just got the CAPTCHA. Also I am getting the following Certificate Error:
The security certificate presented by this website
was issued for a different website's address.
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Re: Maximum number of Login attempts exceeded

Postby acknak » Mon Nov 04, 2013 4:15 pm

Now the captcha is back for me as well ...
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Re: Maximum number of Login attempts exceeded

Postby RoryOF » Mon Nov 04, 2013 5:02 pm

No Captcha for me (persistent login), but Forum definitely slower (fr Forum also report this on dev list).
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Re: Maximum number of Login attempts exceeded

Postby Daiwe01 » Mon Nov 04, 2013 6:05 pm

To Site Admin: Use the header IP in phpBB code
Parse the value[s] of X-Forwarded-For. The first value is the IP of the originating client. Any subsequent values are proxies used before the current proxy.

you should use the ip in the header and not tcpip level. traffic goes
through a proxy. Same thing will happen if we use the trafficserver to
cache pages.

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Re: Maximum number of Login attempts exceeded

Postby thomasjk » Mon Nov 04, 2013 9:33 pm

Captcha i still there for me. The site is very slow right now.
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Re: Maximum number of Login attempts exceeded

Postby Villeroy » Mon Nov 04, 2013 9:44 pm

:(
Captchas are back in town and the town is crawling. Why do we need a proxy?
Please, edit this topic's initial post and add "[Solved]" to the subject line if your problem has been solved.
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Re: Maximum number of Login attempts exceeded

Postby RGB » Mon Nov 04, 2013 10:29 pm

Sorry for the delay, it was impossible for me to be on line for several hours. It should be OK now. Let's see how this evolve.
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Re: Maximum number of Login attempts exceeded

Postby Hagar Delest » Mon Nov 04, 2013 10:44 pm

Well, still crawling...
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