Re: Redirect attempts

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On Mon, May 12, 2014 at 7:03 PM, Alex <mysqlstudent@xxxxxxxxx> wrote:
> Hi,
>
> I'm using squirrelmail-1.4.21 on fedora20 with apache-2.4.9 and have the
> following in my logs:
>
> 173.13.167.230 - - [12/May/2014:21:40:53 -0400] "POST
> /webmail/src/redirect.php HTTP/1.1" 302 - "
> https://mail.mydomain.com/webmail/src/login.php"; "Mozilla/4.0 (compatible;
> MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; InfoPath.2;
> .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR
> 3.5.30729)" 2973 2388
>
> where mydomain.com is my server. Are these hack attempts? I came across the
> following on the fail2ban site here
> http://www.fail2ban.org/wiki/index.php/Talk:SquirrelMail:
>
> failregex = <HOST> - - \[.*\] "POST /webmail/src/redirect.php HTTP/1.[01]"
> 200 \d{1,5} "https?://[^/]+/webmail/src/login.php" ".*"
>
> There aren't any further comments about it there, so I was just curious if
> someone had some experience with this rule and whether the redirects were
> normal. They sure are excessive.

That's a normal login.  The login.php script is the referrer, the
redirect.php script sent a 302 response (you should see a request for
the target of the 302, webmail.php immediately following).

I haven't looked at the fail2ban link, but you should ask them why
this is listed as a suspicious event if that's indeed what they have
said about it.

If you are concerned about brute force attempts on your system, there
are several security related plugins you can use that are listed in
the "Logging in" category on the SquirrelMail website.  You should
also have Squirrel Logger installed (which can be used in combination
with fail2ban if you like).

-- 
Paul Lesniewski
SquirrelMail Team
Please support Open Source Software by donating to SquirrelMail!
http://squirrelmail.org/donate_paul_lesniewski.php

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