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Steps in hardening your mail service :

Some of the things which can be done from WHM to harden your mail service : ========================= From WHM Main >> Server Configuration >> Tweak Settings: * POP3 connection limit option...

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Protect your server from DDoS attacks – Part 1 !!

What is a DDoS attack ? DDoS, short for Distributed Denial of Service, is a type of DOS attack where multiple compromised systems — which are usually infected with a Trojan (70% of the time)– are used...

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.htaccess files – Basics

A small note on .htaccess file. What is .htaccess? .htaccess is a configuration file for use on web servers running the Apache Web Server. When an .htaccess file is placed in a directory it is detected...

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Virtuozzo – Basics

Virtuozzo is a software application for enterprise server virtualization that allows an administrator to create virtual environments on a host computer at the operating system (OS) layer. Instead of...

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Dovecot issue – dovecot.index file broken ?

Dovecot issue – dovecot.index file corrupted? Any email user not able to access via his webmail? Does it show logins failed, even if you are cent percent sure logins are correct? Check...

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ip_conntrack: table full, dropping packet !!

Facing an issue with the kernel module, ‘ip_conntrack’ ? Checking /var/log/messages gives something like this ? ========== Nov 13 14:45:23 host kernel: ip_conntrack: VPS xxx table full, dropping...

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Issue with Apache and SymLinks

The vulnerability with Symlinks and Apache is a known issue in a shared hosting environment. 1st step employed by the attacker in order to carry out this attack it to find a compromised ‘single’...

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Options +Includes — what is it ?

What is the option seen as Options +Includes ?? SSI (Server Side Includes) are directives that are placed in HTML pages, and evaluated on the server while the pages are being served. They let you add...

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csf & iptables cheatsheet !!

CSF csf -a   : allow an ip and add it to /etc/csf.allow csf -ar  : remove an ip from /etc/csf.allow and delete rule csf -d   : deny an ip and add to /etc/csf.deny csf -dr  : unblock an ip and remove...

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Open resolvers !!

Open resolver ?? Before getting to know what is an open resolver, you need to know what is recursion, ie recursive queries ! Suppose you have a DNS server configured and a local machine which uses your...

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A cPanel bug ( for version — 11.40 ) with clamAV

Getting the following error message ? =========== Original Message -------- Subject: Cron /usr/local/cpanel/3rdparty/bin/freshclam --quiet --no-warnings From: (Cron Daemon) To: root@hostname Date:...

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Apache error — No space left on device: Couldn’t create accept lock

Apache: [emerg] (28)No space left on device: Couldn’t create accept lock [notice] suEXEC mechanism enabled (wrapper: /usr/local/apache/bin/suexec) [crit] (28)No space left on device: mod_rewrite:...

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Error when trying to FTP !

When trying to FTP-in, facing this error ? : ================= Status: Resolving address of xxxxxxxxxxxxxxx.com Status: Connecting to xx.xx.xx.xx:21… Status: Connection established, waiting for welcome...

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