Security Update: Atomic Mod Security setup guide for cPanel

As to help our VPS and Dedicated Server customers who might also be effected by this we have designed the following guide to make installing Atmoic Mod Security into cPanel with little to no fuss.

Stage 1: Run the following commands at command line:

mkdir /var/asl
mkdir /var/asl/tmp
mkdir /var/asl/data
mkdir /var/asl/data/msa
mkdir /var/asl/data/audit
mkdir /var/asl/data/suspicious
chown nobody.nobody /var/asl/data/msa
chown nobody.nobody /var/asl/data/audit
chown nobody.nobody /var/asl/data/suspicious
chmod o-rx -R /var/asl/data/*
chmod ug+rwx -R /var/asl/data/*
mkdir /var/asl/updates
mkdir /var/asl/rules/
mkdir /var/asl/rules/clamav
mkdir /etc/asl/
touch /etc/asl/whitelist
cd /usr/local/src/
wget http://updates.atomicorp.com/channels/rules/delayed/modsec-2.7-free-latest.tar.gz
tar zxvf modsec-2.7-free-latest.tar.gz
mkdir /usr/local/apache/conf/modsec_rules/
cp modsec/* /usr/local/apache/conf/modsec_rules/
These command will create the required directory’s and download the latest free version of the Atomic Mod Security rules. It will also directly install them into the location of Apache designed for cPanel and configure the permission.

Stage 2: Configure cPanel to use the Mod Security Rules

In this stage, you can do everything from WHM as long as you have Mod Security already installed as part of your EasyApache build. If you do not, you will need to rebuild apache with Mod Security.

In go to: WHM -> Plugins -> Mod Security and then click: Edit Config

In this section, delete all the current content and then paste in the following configuration:

SecRequestBodyAccess On
SecAuditLogType Concurrent
SecResponseBodyAccess On
SecResponseBodyMimeType (null) text/html text/plain text/xml
SecResponseBodyLimit 2621440
SecAuditLogRelevantStatus "^(?:5|4(?!04))"
SecServerSignature Apache
SecUploadDir /var/asl/data/suspicious
SecUploadKeepFiles Off
SecAuditLogParts ABIFHZ
SecArgumentSeparator "&"
SecCookieFormat 0
SecRequestBodyInMemoryLimit 131072
SecDataDir /var/asl/data/msa
SecTmpDir /tmp
SecAuditLogStorageDir /var/asl/data/audit
SecResponseBodyLimitAction ProcessPartial

Include /usr/local/apache/conf/modsec_rules/10_asl_antimalware.conf
Include /usr/local/apache/conf/modsec_rules/10_asl_rules.conf
Include /usr/local/apache/conf/modsec_rules/20_asl_useragents.conf
Include /usr/local/apache/conf/modsec_rules/30_asl_antispam.conf
Include /usr/local/apache/conf/modsec_rules/50_asl_rootkits.conf
Include /usr/local/apache/conf/modsec_rules/60_asl_recons.conf
Include /usr/local/apache/conf/modsec_rules/99_asl_jitp.conf
Include /usr/local/apache/conf/modsec2.whitelist.conf
Save this and restart Apache.

This should now have successfully installed the Atomic mod security rules into cPanel which are a much more secure rule base and include extra protection which is important for the latest hacks.

Fixing su: cannot set user id: Resources temporarily

#su -
su: cannot set user id: Resource temporarily unavailable
#

After searching and googling few minutes, i found a quick resolution to fixing this issue.
This is all about VPS limit.

Edit limit.conf below or change if needed.
#vi /etc/security/limit.conf
#### add/change on these line below:
* soft nproc 2047
* hard nproc 16384
* soft nofile 2048
* hard nofile 65536

After that try to relogin using a normal access user and then try to get su -
this should fixed your issue.

Conver Putty ppk key to SSH key

In many occasions I needed to convert a Putty ppk private key nack to open ssh key to be able to use it directly from a linux box command line. It is fairly simple to do but I always need to look it up so here it is for easy reference :

Install putty using yum in Fedora.
If you are using Ubuntu you need to install putty-tools as well

From the command line give

puttygen xxxxx2.ppk -O private-openssh -o key.ssh

Enter passphrase to load key:

Then log onto your system using

ssh root@84.200.82.6 -p 8057 -i key.ssh