by admin | Oct 3, 2014 | cPanel/WHM
When trying to run/restart the Pureftp service, do you get the following error ? pure-ftpd (/usr/sbin/pure-ftpd -O clf:/var/log/xferlog –daemonize -A -c50 -B – C8 -D -E -fftp -H -I15 -lextauth:/var/run/ftpd.sock -L2000:8 -m4 -p30000:35000 -s -S21 -U133:022 -u100...
by admin | Sep 18, 2014 | OpenSource
We have discussed about DDoS hitting Webservers in this post. It can also attack the DNS servers, which is often called as DNS Amplification Attacks. In Simple words, the attack can be explained as follows : Someone makes an inquiry to you, on how to reach a...
by admin | Sep 18, 2014 | Apache, Servers
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 to target a single system causing a Denial of Service (DoS) attack....
by admin | Sep 18, 2014 | DNS
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 DNS server queries for a website. Imagine this query is a new one and its not in...
by admin | Sep 15, 2014 | cPanel/WHM, OpenSource
SpamAssassin is just a great tool to block the incoming spams to your server. However, you might just need some other tools in addition to SpamAssassin, if you feel lotta spams are making it past SA. Two of my suggestions from WHM are : 1. Enable the RBL option from...
by admin | Sep 15, 2014 | Mail service, Servers
We are observing a brute-force attack towards SMTP connections from different IP addresses with the same machine name – “ylmf-pc“ It could be many malware affected machines involved or an extended IP spoofing. If you have CSF configured properly, the IPs would be...
by admin | Sep 6, 2014 | cPanel/WHM
It would be a difficult job to upgrade cPanel from versions 11.30.x to the latest ones trending now. Under usual circumstances, upgrading cPanel can be as easy as running the script : # scripts/upcp However, if your box is running an old version of cPanel, you might...
by admin | Aug 31, 2014 | MySQL
When trying to restart the MySQL service, do you happen to find the following error in the logs ? /usr/sbin/mysqld: Can’t create/write to file ‘/tmp/xx’ (Errcode: 122) date InnoDB: Error: unable to create temporary file; errno: 122 date [ERROR]...
by admin | Aug 31, 2014 | Mail service, Plesk
This post will help you to track down spamming from a Plesk server, if its employed using PHP scripts in any of the domains. – Use this one to view the folders which have mail PHP scripts enabled and running. # vi /var/qmail/bin/sendmail-wrapper #!/bin/sh (echo...
by admin | Aug 31, 2014 | Mail service, Plesk
Finding the source of spamming in a server provisioned with Plesk is a tough job. Some of the useful commands which might help you are given down. Find the number of mails hung in the queue : # /var/qmail/bin/qmail-qstat To get an idea about the the message headers of...
