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Posted to user@guacamole.apache.org by Vieri <re...@yahoo.com.INVALID> on 2022/01/04 07:25:53 UTC
limit login attempts
Hi,
I believe this question has already been asked, but I can't seem to find an answer in the docs or mailing list archives.
My Guacamole login mechanism uses LDAP (AD server). Now, I could configure the AD server to disable user accounts after 3 login attempts.
However, I'm wondering of Guacamole itself has a way to limit user login attempts.
Regards,
Vieri
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[OT] Re: limit login attempts
Posted by Piviul <pi...@riminilug.it>.
Il 05/01/22 08:28, Piviul ha scritto:
> Il 04/01/22 19:17, sam g ha scritto:
>> Hello,
>>
>> I'm sure I'm asking a silly question but where would be this
>> Guacamole log file where the login failed attempts are written?
>> I tried but I don't see anything in my
>> /var/log/tomcat9/*localhost_access_log*.2022-01-04.txt or in
>> /var/log/tomcat9/*localhost_access_log*.2022-01-04.txt .
>> With a "*systemctl status tomcat9*" I can see some "*WARN
>> o.a.g.r.auth.AuthenticationService - Authentication attempt from
>> a.b.c.d for user "zzzf" failed.*"
> In my debian buster guacamole logs are sent to tomcat, so I can find
> failed logs in /var/log/tomcat/catalina.out
I add that after installing fail2ban you have enable it; in my debian
buster I have added the file /etc/fail2ban/jail.d/guacamole.conf:
$ cat /etc/fail2ban/jail.d/guacamole.conf
[guacamole]
enabled = true
and then I updated the failregex to discover failed login attempt in
/etc/fail2ban/filter.d/guacamole.conf. My failregex is:
failregex = ^.*WARN o\.a\.g\.r\.auth\.AuthenticationService -
Authentication attempt from <HOST> for user "[^"]*" failed\.$
Then look into /var/log/fail2ban.log to see if all is working as expected
Piviul
Re: limit login attempts
Posted by Piviul <pi...@riminilug.it>.
Il 04/01/22 19:17, sam g ha scritto:
> Hello,
>
> I'm sure I'm asking a silly question but where would be this Guacamole
> log file where the login failed attempts are written?
> I tried but I don't see anything in my
> /var/log/tomcat9/*localhost_access_log*.2022-01-04.txt or in
> /var/log/tomcat9/*localhost_access_log*.2022-01-04.txt .
> With a "*systemctl status tomcat9*" I can see some "*WARN
> o.a.g.r.auth.AuthenticationService - Authentication attempt from
> a.b.c.d for user "zzzf" failed.*"
In my debian buster guacamole logs are sent to tomcat, so I can find
failed logs in /var/log/tomcat/catalina.out
Piviul
Re: limit login attempts
Posted by sam g <sa...@yahoo.fr.INVALID>.
Hello,
I'm sure I'm asking a silly question but where would be this Guacamole log file where the login failed attempts are written?I tried but I don't see anything in my /var/log/tomcat9/localhost_access_log.2022-01-04.txt or in /var/log/tomcat9/localhost_access_log.2022-01-04.txt .
With a "systemctl status tomcat9" I can see some " WARN o.a.g.r.auth.AuthenticationService - Authentication attempt from a.b.c.d for user "zzzf" failed."
Thanks,Sam
Le mardi 4 janvier 2022, 10:23:09 UTC+1, Mike Jumper <mj...@apache.org> a écrit :
On Mon, Jan 3, 2022, 23:26 Vieri <re...@yahoo.com.invalid> wrote:
Hi,
I believe this question has already been asked, but I can't seem to find an answer in the docs or mailing list archives.
My Guacamole login mechanism uses LDAP (AD server). Now, I could configure the AD server to disable user accounts after 3 login attempts.
However, I'm wondering of Guacamole itself has a way to limit user login attempts.
Not within Guacamole itself, but within the Guacamole server:
If you install fail2ban and configure it to recognize the invalid login messages in the Guacamole logs, then brute-force login attempts are automatically blocked at the firewall level.
- Mike
Re: limit login attempts
Posted by Mike Jumper <mj...@apache.org>.
On Mon, Jan 3, 2022, 23:26 Vieri <re...@yahoo.com.invalid> wrote:
> Hi,
>
> I believe this question has already been asked, but I can't seem to find
> an answer in the docs or mailing list archives.
>
> My Guacamole login mechanism uses LDAP (AD server). Now, I could configure
> the AD server to disable user accounts after 3 login attempts.
> However, I'm wondering of Guacamole itself has a way to limit user login
> attempts.
>
Not within Guacamole itself, but within the Guacamole server:
If you install fail2ban and configure it to recognize the invalid login
messages in the Guacamole logs, then brute-force login attempts are
automatically blocked at the firewall level.
- Mike