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Excerpt: About   This article is for user who want to optimize single website with Varnish HTTP accelerator running on shared Cpanel servers to reduce the load. Varnish Cache is an open source, state of the art web application accelerator. You install it on your web server and it makes your website fly. We can put the Varnish on port 80 to handle/cache the web page request and apache on other port. Before going through the installations, following are the per-requests which you need to met to configure correctly on your server or vps.     Pre-Requests   1 -> Full root access to the server. 2 -> Dedicated….

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Excerpt: Similar to mail server on some occasions there may arise a necessity to run ftp server (running pureftp) to run on multiple ports. Say for example if you want to run your ftp server on both the standard and customized ports (ie…port 21 and 31) you can follow the instructions below to make it work. It also works well on servers running cpanel / plesk / directadmin .   Multiple Ports on Pure-ftpd   By default when you start pure-ftp, it will be listening on default port 21 on all IPs. If you want to run run pure-ftp on port 31 on IP 192.168.0.1(for….

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Excerpt: What is Passive FTP ports? In passive mode FTP the client initiates both connections to the server, solving the problem of firewalls filtering the incoming data port connection to the client from the server. When opening an FTP connection, the client opens two random unprivileged ports locally (N > 1023 and N+1). The first port contacts the server on port 21, but instead of then issuing a PORT command and allowing the server to connect back to its data port, the client will issue the PASV command. The result of this is that the server then opens a random unprivileged port….