Posts Tagged ‘server configuration’

Client Denied By Server Configuration Linux Apache error solution

Thursday, August 1st, 2013

Client denied by server configuration fix solution Apache feather logo

If you run Apache server on Debian Linux / Ubuntu / CentOS whatever Linux OS and you try to install a new PHP application under lets say /var/www/ getting an error in Apache error.log like:
 

[Wed Jul 31 03:36:21 2013] [error] [client 192.168.10.2] client denied by server configuration: /var/www/vea/index.php, referer: http://192.168.10.9/vea/


This is due to misconfigured AllowOverrides in some of your main configuration files.

So what is causing the error?

Reason is by default in most current Linux distributions Apache is configured to have restrictive policy following the good security practice (Restrictive by default).
Apache is configured by default to not accept AllowOverrides – i.e. AllowOverride None for DocumentRoot /, because there are plenty of administrators who run Apache without having profound understanding leaving it to interpret by default mod_rewrite rules from .htaccess files etc.

To fix this issue, hence you have to add extra configuration for AllowOverride directive for directory giving the err. In this case /vea:

<Directory /var/www/vea/> 
Options -Indexes FollowSymLinks
AllowOverride AuthConfig
FileInfo Order allow,deny
Allow from all
</Directory> 

Above rules are a bit restrictive and will allow only to have .htaccess with only for protecting directory with htaccess passsword for exmpl. – (AuthUserFile, AuthGroupFile, AuthName, AuthType) .htaccess.
-Indexes – instructs /var/www/vea directory listing to be disabled, below two lines:

Order allow, deny
Allow from all

Makes the directory Allowed to be visible by all, however note that it is possible in some of other Apache configuration files to have other rules configured for /vea documentroot /var/www/ which are preventive (Default Deny) – if this is the case just walk through all Apache configs and change where necessary to Allow from all.

In some cases it is possible Web application or Website placed requires AllowOverride All directive instead. If above <Directory>

does not help and you continue to get:

[Wed Jul 31 03:36:21 2013] [error] [client xxx.xxx.xx.x] client denied by server configuration: /var/www/php-application/index.php, referer: http://xxx.xxx.xx.xx/php-application/  

Try setting Directory rules with AllowOverride All ;

<Directory /var/www/php-application/> 
Options -Indexes FollowSymLinks
AllowOverride All
FileInfo Order allow,deny
Allow from all
</Directory> 

Debian / Ubuntu server admins should check closely for AllowOverride rules in files /etc/apache2/conf.d/*

as well as in /etc/apache2/mods-available/*:

Usually there are AllowOverride rules set from files:

/etc/apache2/conf.d/apache2-doc
/etc/apache2/conf.d/localized-error-pages
/etc/apache2/conf.d/security

and also in

/etc/apache2/mods-available/alias.conf
/etc/apache2/mods-available/userdir.conf

On Debian GNU / Linux, very common reason for getting client denied by server configuration is AllowOverride definitions in /etc/apache2/conf.d/security, default AllowOverride there are set to None, i.e.:

<Directory />
AllowOverride None
Order Deny,Allow
Deny from all
</Directory>

If that's the case with you make sure you config rules to become:

# <Directory />
# AllowOverride None
# Order Deny,Allow
# Deny from all
# </Directory>

A very useful command to find where there is occurance of AllowOverride in Apache many configs is:

root@linux:~# cd /etc/apache2
root@linux:/etc/apache2# grep -rli AllowOverride *
apache2.conf
conf.d/localized-error-pages
conf.d/apache2-doc
conf.d/security
mods-available/userdir.conf
mods-available/alias.conf
sites-available/www.website1.com
sites-available/www.website2.com
...


 

Once you did all necessary config Restart Apache:

root@linux:~# /etc/init.d/apache2 restart
....

How to configure pine (alpine) console client to work with vpopmail pop3 and imap protocol

Monday, June 13th, 2011

I needed to check my mail via ssh connection, as my installed squirrelmail is curently broken and I’m away from my own personal computer.

I did some online research on how this can be achieved and thanksfully I finallyfound a way to check my pop3 and imap mailbox with a console client called alpine , better known in unix community under the name pine .

I installed pine on my Debian with apt:


debian:~# apt-get install alpine

Here is my pine configuration file .pinerc used to fetch my mail with pine:

a .pinerc conf file to check my pop3 mail

To use that file I placed it in my home directory ~/ , e.g.:


debian:~# wget http://www.pc-freak.net/files/.pinerc
...

To attune the pop3 server configuration in the sample .pinerc above one needs to change the value of:


inbox-path=

For example to configure pine to fetch mail from the pop3 server mail.pc-freak.net and store it locally in my home directory within a file called INBOX
I have configured the inbox-path .pinerc variable to look like so:


inbox-path={mail.pc-freak.net/pop3/user=hipo@pc-freak.net}INBOX

In above configuration’s inbox-path variable configuration the /pop3/ specifies I want to fetch my mail via the pop3 protocol , if one wants to use imap this has to be substituted with /imap/

The value user=hipo@pc-freak.net specifies my vpopmail created user which in my case is obviously hipo@pc-freak.net

The other variables which are good to be changed in .pinerc config are:


personal-name=

This variable has to be set to the name of the Email Sender which will be set, if pine is used to send email.

I also changed the user-domain variable as it’s used to set the domain name from which the pine client will send the emails from:

As my domain is pc-freak.net I’ve set the domain name variable to be:


user-domain=pc-freak.net

Now after launching pine it prompted me for my email password, putting in the pass did fetch all my new unread mails via pop3 protocol.

The only annoying thing was that each time I quit pine and start it up again, I’m now asked to enter the email password.

This behaviour is really shitty, but thanksfully one can easily workaround that by letting pine be constantly running detached in gni screen session.