Set up a Linux firewall with ease using Firestarter
News In a recent article, we looked at manually creating a firewall using iptables, the packet-filtering program built into the Linux 2.4 kernel. You will also need to have either ipchains or netfilter/iptables installed, depending on which kernel you...
[April 26, 2002, 9:26]
A Personal Firewall for Linux
White Papers This paper constitutes the investigation and development of a user-friendly tool for firewall-configuration and -management, based on the netfilter/iptables-firewall-code residing in current Linux-kernels.
[June 25, 2008, 1:01]
Linux kernel flaw could trigger DoS incidents
News The attack is apparently effective only if the system uses iptables to filter traffic. You can fix this problem with a patch, or, according to Secunia, by changing the iptables filter to use "the PREROUTING chain instead of the INPUT chain.
[May 27, 2003, 13:55]
Linux firewalls from old PCs
News These two articles provide an overview of building a firewall with iptables: "Set up a strong Linux firewall with iptables""Utilizing the advanced firewall techniques in iptables" If you know ipchains well, it doesn't take much to learn the...
[July 2, 2002, 13:26]
A Simple Guide to Creating a Firewall and Squid Proxy Server
White Papers Red Hat Enterprise Linux utilizes the iptables system, which is a kernel-level packet-filtering tool. A firewall is extremely important in any environment where systems will be connecting to an insecure network like the Internet.
[January 31, 2009, 6:26]
Real Firewalls, Virtual Networks: IBM System z Security
White Papers Although external firewalls or Linux iptables could be deployed, no other solution available today for the System z best combines an award winning, secure firewall and VPN while addressing the issues of manageability, availability and scalability...
[August 30, 2009, 1:23]
How to Replicate the Fire: HA for Netfilter Based Firewalls
White Papers With Linux 2.4.x netfilter/iptables, the Linux firewalling code moves beyond traditional packet filtering. With traditional, stateless firewalling (such as ipfwadm, ipchains) there is no need for special High Availability (HA) support in the...
[November 11, 2009, 12:49]
Firewall Builder
Downloads It currently supports iptables, ipfilter, ipfw, OpenBSD pf and Cisco PIX. Firewall Builder is a multi-platform firewall configuration and management system. It consists of a GUI and set of policy compilers for various firewall platforms.
[September 19, 2009, 2:39]
Linux kernel to include IPv6 firewall
News Netfilter/iptables, the firewall engine that is part of the Linux kernel, already allows stateless packet filtering for versions 4 and 6 of the Internet protocol, but only allows stateful packet filtering for IPv4.
[February 21, 2005, 14:10]
Defender of the Linux faith
News Welte is one of the core developers of the Linux kernel firewall engine Netfilter/iptables and the maintainer of the packet filter subsystem in the Linux kernel. Earlier this week, open source developer Harald Welte personally handed over warning...
[March 17, 2005, 12:35]
Firewall Rules Analysis
White Papers It can discover all the anomalies in the firewall rule-set in the format that is usually used by many firewall products such as Cisco Access Control List, IPTABLES, IPCHAINS and Check Point Firewall-1.
[June 25, 2008, 1:01]
Build your own Linux server
Talkback They are obsolete in current kernels replaced by the more powerful IPTABLES suite. Don't what planet this author is on but there are other distro's out there that are just as good as SUSE and Red Hat.
[April 29, 2004, 21:49]
'Critical' open source initiative to crack public sector
News How does the government know it is getting a good Iptables guy or a good Samba guy? A UK government-funded initiative aims to accelerate the use of open source software within the public sector, through various activities including the creation of...
[April 5, 2005, 17:10]
Virtual Dreaming (revised)
Blog Since I'm still dreaming, perhaps "virtualising" computer processes through inter-process communication links using IPv6 could allow the use of iptables and the like to enforce security. To finish off my project I've been running Virtual PC 2007 at...
[August 7, 2008, 8:03]
Sorry for the lagged reply
Talkback I tend to grab an unused office PC, replace any dodgy components, maybe install a second hard disk so I can RAID it, then bung a Linux distribution on it, and use the built-in routing (various) and filtering (iptables) packages to route and filter...
[June 13, 2007, 12:34]
Tech investments: Should you go for low cost or capability for growth?
News You might use a low-cost software firewall solution to protect the LAN, such as a Linux machine running ipchains (a simple packet filtering firewall), iptables/Netfilter (a stateful firewall included in versions 2.4.x of the Linux kernel...
[June 21, 2006, 16:15]
