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Search results for How to set up a CARP enabled Firewall

Linux

Enhancing kernel security with grsecurity

Post date: November 25, 2005, 21:11 Category: Security Views: 2909 Comments
Tutorial quote: Is your server as secure as it could be? Sure, you use a firewall, mandate strong passwords, and patch regularly. You even take a proactive approach by performing security audits with tools such as nmap and Nessus. Yet you may still be vulnerable to zero-day exploits and privilege escalation attacks. If these possibilities keep you awake at night, you're not alone. The sleepless folks with the grsecurity project have developed an easy-to-use set of security enhancements to help put your fears to rest.
CentOS

Virtual Hosting Howto With Virtualmin On CentOS 5.1

Post date: March 4, 2008, 11:03 Category: Installing Views: 5247 Comments
Tutorial quote: This tutorial shows how to set up a CentOS 5.x server to offer all services needed by virtual web hosters. These include web hosting, smtp server with (SMTP-AUTH and TLS, SPF, DKIM, Domainkeys), DNS, FTP, MySQL, POP3/IMAP, Firewall, Webalizer for stats.
BSD

Firewalling with OpenBSD's PF packet filter

Post date: April 19, 2005, 02:04 Category: Network Views: 6566 Comments
Tutorial quote: PF operates in a world which consists of packets, protocols, connections and ports.

Based on where a packet is coming from or where it's going, which protocol, connection of port it is designated for, PF is able to determine where to lead the packet, or decide if it is to be let through at all.

It's equally possible to direct network traffic based on packet contents, usually referred to as application level filtering, but this is not the kind of thing PF does. We will come back later to some cases where PF will hand off these kinds of tasks to other software, but first let us deal with some basics.

We've already mentioned the firewall concept. One important feature of PF and similar software, perhaps the most important feature, is that it is able to identify and block traffic which is you do not want to let into your local network or let out to the world outside. At some point the term 'firewall' was coined.
Ubuntu

The Perfect Setup - Ubuntu 6.10 Server (Edgy Eft)

Post date: October 29, 2006, 20:10 Category: Installing Views: 4241 Comments
Tutorial quote: This is a detailed description about how to set up a Ubuntu 6.10 (Edgy Eft) based server that offers all services needed by ISPs and hosters: Apache web server (SSL-capable), Postfix mail server with SMTP-AUTH and TLS, DNS server, FTP server, MySQL server, POP3/IMAP, Quota, Firewall, etc.
Linux

Flexnet License Monitoring With rrdtool

Post date: July 15, 2010, 11:07 Category: Miscellaneous Views: 5882 Comments
Tutorial quote: Some of you may know the commercial Flexnet Licencing Application (İMacrovision). It's a client-server based solution for managing the usage of socalled Flexnet-enabled applications. You can hold licenses of more than one product on one license-server. As you typically have to buy licenses and licenses can be expensive it would be nice to have a monitoring solution to see the utilization of the precious licenses, whether they are underutilized (so money is wasted) or are always fully utilized (so that you can suspect that sometimes people cannot do their work, or only delayed) which is also a waste of resources. As far as I know there are commercial applications for performing such reports, but again you have to spend money. Why not build a simple system yourself, which shows the actual and past usage in an "MRTG style"?
Ubuntu

The Perfect Setup - Ubuntu 6.06 LTS Server (Dapper Drake)

Post date: June 7, 2006, 20:06 Category: Miscellaneous Views: 3540 Comments
Tutorial quote: This is a detailed description about how to set up a Ubuntu 6.06 LTS (Dapper Drake) based server that offers all services needed by ISPs and hosters (web server (SSL-capable), mail server (with SMTP-AUTH and TLS!), DNS server, FTP server, MySQL server, POP3/IMAP, Quota, Firewall, etc).
CentOS

The Perfect Setup - CentOS 4.4

Post date: October 12, 2006, 17:10 Category: Installing Views: 6050 Comments
Tutorial quote: This is a detailed description about how to set up a CentOS 4.4 based server that offers all services needed by ISPs and hosters (web server (SSL-capable), mail server (with SMTP-AUTH and TLS), DNS server, FTP server, MySQL server, POP3/IMAP, Quota, Firewall, etc.). This tutorial is written for the 32-bit version of CentOS 4.4, but should apply to the 64-bit version with very little modifications as well.
Mandriva

The Perfect Setup - Mandriva 2007 Free Edition

Post date: October 15, 2006, 18:10 Category: Installing Views: 4340 Comments
Tutorial quote: This is a detailed description about how to set up a Mandriva 2007 Free Edition based server that offers all services needed by ISPs and hosters (Apache web server (SSL-capable), Postfix mail server (with SMTP-AUTH and TLS), DNS server, FTP server, MySQL server, POP3/IMAP, Quota, Firewall, etc.).
Ubuntu

The Perfect Server - Ubuntu Intrepid Ibex (Ubuntu 8.10)

Post date: November 2, 2008, 12:11 Category: Installing Views: 4207 Comments
Tutorial quote: This tutorial shows how to set up an Ubuntu Intrepid Ibex (Ubuntu 8.10) server that offers all services needed by ISPs and hosters: Apache web server (SSL-capable), Postfix mail server with SMTP-AUTH and TLS, BIND DNS server, Proftpd FTP server, MySQL server, Courier POP3/IMAP, Quota, Firewall, etc.
CentOS

The Perfect Setup - CentOS 4.3 (64-bit)

Post date: April 13, 2006, 07:04 Category: Miscellaneous Views: 10656 Comments
Tutorial quote: This is a detailed description how to set up a CentOS 4.3 based server that offers all services needed by ISPs and hosters (web server (SSL-capable), mail server (with SMTP-AUTH and TLS!), DNS server, FTP server, MySQL server, POP3/IMAP, Quota, Firewall, etc.). This tutorial is written for the 64-bit version of CentOS 4.3, but should apply to the 32-bit version with very little modifications as well.
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