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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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74

Secure Internet Gateway Setup With NAT For Multiple Machines

If you have several machines in your home or office network, make the other machines use it. With NAT (or "IP masquerading", as it's called in another universe), multiple machine can be hidden behind one gateway machine. The machines behind the . . . . If you have several machines in your home or office network, make the other machines use it. With NAT (or "IP masquerading", as it's called in another universe), multiple machine can be hidden behind one gateway machine. The machines behind the gateway can use their own, private network numbers (usually form the 10/24 or 192.168/16 subnets), and the gateway will translate the private, internal addresses to the public, external address of the gateway machine (hence NAT => Network Address Translation, see Image #3). Any replies made to requests sent out will be translated before sent back to the client. One of the characteristics of this scheme is that a client machine needs to establish a connection, and no outside machine can connect beyond the NAT gateway. From the security point of view this is absolutely desirable. From a practical view, it might be needed to forward single ports to inside machines, e.g. to let them handle WWW or FTP requests. The link for this article located at BSDToday is no longer available. . Utilize NAT to bolster cybersecurity by efficiently handling various devices in your personal or workplace network.. NAT Security, Network Configuration, Home Networking. . Anthony Pell

Calendar 2 Feb 13, 2001 User Avatar Anthony Pell Network Security
72

Configuring Services on Linux Server Firewall for Enhanced Security

In this three-part series, you'll learn to install and configure a Linux server and firewall. Part 1 covered the selection and installation of a secure Linux distribution. Part 2 covers the reassignment of the services provided by the old firewall the . . . . In this three-part series, you'll learn to install and configure a Linux server and firewall. Part 1 covered the selection and installation of a secure Linux distribution. Part 2 covers the reassignment of the services provided by the old firewall the authors replaced. And Part 3 covers the process of installing the firewall itself. This week the authors configure mail, FTP, and Web service -- all with the proper level of paranoia. This article is part two of a three-part series on configuring a secured Linux firewall and server. In this installment we set up replacements on the new server -- wolf. -- for the services which the former firewall and server -- plains. -- provided. (As in our previous article, names and IP addresses have been changed to protect the innocent.) The link for this article located at LinuxWorld is no longer available. . In this continuation of our series, discover how to set up essential services on a Linux server, including web hosting and database management while ensuring maximum security protocols.. Linux Firewall Installation, Secure Linux Server, Network Services Configuration, Firewall Setup. . Anthony Pell

Calendar 2 Oct 17, 2000 User Avatar Anthony Pell Firewalls
77

Implementing Postfix for Secure SMTP Communication in Firewalls and DMZs

This article is intended to bring you up to speed quickly on how to use postfix on your network as a secure means of receiving e-mail from and delivering it to Internet hosts. In particular we'll focus on deploying postfix on firewalls, in DMZs and in other settings in which it will be exposed to contact with untrusted systems.. . .. This article is intended to bring you up to speed quickly on how to use postfix on your network as a secure means of receiving e-mail from and delivering it to Internet hosts. In particular we'll focus on deploying postfix on firewalls, in DMZs and in other settings in which it will be exposed to contact with untrusted systems. Wietse Venema, intrepid developer of TCP wrappers and co-creator of SATAN, has come through for us again: his program, postfix, provides an alternative to sendmail that is simpler in design, more modular, easier to configure and less work to administer. Equally important, it's been designed with scalability, reliability and sound security as fundamental requirements. The link for this article located at Linux Journal is no longer available. . Discover the steps to set up Postfix for safe email transmission, ensuring you can accept correspondences from unreliable networks successfully.. Email Security, Postfix Configuration, Network Security. . LinuxSecurity.com Team

Calendar 2 Sep 15, 2000 User Avatar LinuxSecurity.com Team Server Security
72

Red Hat ipchains-firewall 1.7.1 Critical: Interface Detection Problems

Corrections to path issues relating to use of script with Red Hat Linux and from ip-up scripts, a test for ipchains kernel support, and a few minor bugfixes with interface detection routines. " ipchains-firewall is an easily-configurable shell script to establish masquerading . . . . Corrections to path issues relating to use of script with Red Hat Linux and from ip-up scripts, a test for ipchains kernel support, and a few minor bugfixes with interface detection routines. " ipchains-firewall is an easily-configurable shell script to establish masquerading and firewalling rules using ipchains. The script self-configures out of the box for IP addresses, netmasks, and interfaces. All that is needed is a commandline specification of external and internal interface names. It automatically determines type of firewall to set up (standalone, routing, or masquerading) based on interface IP addresses. The distribution also includes a copy of midentd, to enable identd over the masqueraded network. " The link for this article located at Freshmeat.net is no longer available. . Explore updates on ipchains-firewall 1.7.1 for Red Hat addressing firewall setup issues and interface detection.. ipchains Firewall, Red Hat Network, Interface Issues, Firewall Configuration. . Anthony Pell

Calendar 2 Sep 11, 2000 User Avatar Anthony Pell Firewalls
72

Configuring a FreeBSD Firewall with Dynamic IP Address Using IPFW

This article documents how to setup a firewall using a PPP dialup with FreeBSD and IPFW, and specifically with firewalling over a dialup with a dynamically assigned IP address. It does not cover how to setup a standard PPP . . .. This article documents how to setup a firewall using a PPP dialup with FreeBSD and IPFW, and specifically with firewalling over a dialup with a dynamically assigned IP address. It does not cover how to setup a standard PPP connection. The link for this article located at FreeBSD.org--Â Â is no longer available. . Learn how to configure a FreeBSD firewall with PPP dialup using IPFW. Follow key steps to set up packages, configure PPP, manage IPs, set rules, and ensure security.. FreeBSD Firewall, IPFW, PPP Dialup Security, Dynamic IP. . Anthony Pell

Calendar 2 Jun 08, 2000 User Avatar Anthony Pell Firewalls
72

Auditing Firewall Configuration for Enhanced Network Security

You've just finished implementing your new, shiny firewall. Or perhaps you've just inherited several new firewalls with the company merger. Either way, you are probably curious as to whether or not they are implemented properly. Will your . . .. You've just finished implementing your new, shiny firewall. Or perhaps you've just inherited several new firewalls with the company merger. Either way, you are probably curious as to whether or not they are implemented properly. Will your firewalls keep the barbarians out there at bay? Does it meet your expectations? This paper will help you find out. Here you will find a guide on how to audit your firewall and your firewall rulebase. Examples provided here are based on Check Point FireWall-1, but should apply to most firewalls. The link for this article located at RootPrompt.org -- Â Â is no longer available. . Discover the essential steps to thoroughly assess your firewall configuration and verify it aligns with your security requirements.. Firewall Audit, Network Security, Security Configuration, Security Practices. . Anthony Pell

Calendar 2 Apr 10, 2000 User Avatar Anthony Pell Firewalls
72

Effective Packet Filtering Firewalls For Robust Network Security

Here is a very well written article on building packet filtering firewalls... "How about building a packet filtering firewall? OK, there are more interesting things to do. Like, maybe, eating lunch. *smile* But we'll find time for that too. Grab . . .. Here is a very well written article on building packet filtering firewalls... "How about building a packet filtering firewall? OK, there are more interesting things to do. Like, maybe, eating lunch. *smile* But we'll find time for that too. Grab a grinder, and I'll show you how it's done. In fact, you'll create one on your own machine." The link for this article located at William Stearns -- LinuxMonth.com -- Â Â is no longer available. . Here is a very well written article on building packet filtering firewalls... 'How about building a . building, written, article, packet, filtering, firewalls, about. . Anthony Pell

Calendar 2 Mar 13, 2000 User Avatar Anthony Pell Firewalls
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Community Poll

What got you started with Linux?

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Please select either existing option or enter your own, however not both.
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/main-polls/150-what-got-you-started-with-linux?task=poll.vote&format=json
150
radio
0
[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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