Redistribution and use in any form, with or without modification, are permitted provided that the following conditions are met:. Redistributions must retain the above copyright notice, this list of conditions and the following disclaimer. Neither the name of the m0n0wall Documentation Project nor the names of its contributors may be used to endorse or promote products derived from this documentation without specific prior written permission. The entire system configuration is stored in one single XML text file to keep things transparent. The more functionality is added, the greater the chance that a vulnerability in that additional functionality will compromise the security of the firewall. It is the opinion of the m0n0wall founder and core contributors that anything outside the base services of a layer 3 and 4 firewall do not belong in m0n0wall.
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Redistribution and use in any form, with or without modification, are permitted provided that the following conditions are met:. Redistributions must retain the above copyright notice, this list of conditions and the following disclaimer. Neither the name of the m0n0wall Documentation Project nor the names of its contributors may be used to endorse or promote products derived from this documentation without specific prior written permission.
The entire system configuration is stored in one single XML text file to keep things transparent. The more functionality is added, the greater the chance that a vulnerability in that additional functionality will compromise the security of the firewall.
It is the opinion of the m0n0wall founder and core contributors that anything outside the base services of a layer 3 and 4 firewall do not belong in m0n0wall. Some services that may be appropriate are very CPU-intensive and memory hungry, and m0n0wall is focused towards embedded devices with limited CPU and memory resources. The non-persistant filesystem due to our focus on Compact Flash installations is another limiting factor. Lastly, image size constraints eliminate other possibilities.
We feel these services should be run on another server, and are intentionally not part of m0n0wall:. For the same reason, m0n0wall does not allow logins: there is no login prompt at the console it displays a menu instead , and no telnet or ssh daemon. Ever since I started playing with packet filters on embedded PCs, I wanted to have a nice web-based GUI to control all aspects of my firewall without having to type a single shell command. There are numerous efforts to create nice firewall packages with web interfaces on the Internet most of them Linux based , but none met all my requirements free, fast, simple, clean and with all the features I need.
So, I eventually started writing my own web GUI. But soon I figured that I didn't want to create another incarnation of webmin? I wanted to create a complete, new embedded firewall software package. It all evolved to the point where one could plug in the box, set the LAN IP address via the serial console, log into the web interface and set it up.
Then I decided that I didn't like the usual bootup system configuration with shell scripts I already had to write a C program to generate the filter rules since that's almost impossible in a shell script , and since my web interface was based on PHP, it didn't take me long to figure out that I might use PHP for the system configuration as well. That way, the configuration data would no longer have to be stored in text files that can be parsed in a shell script?
It could now be stored in an XML file. So I completely rewrote the whole system again, not changing much in the look-and-feel, but quite a lot "under the hood". The first public beta release of m0n0wall was on February 15, Version 1. Between those two were an additional 26 public beta releases, an average of one release every two weeks.
A complete list of changes for each version can be found on the m0n0wall web site under Change Log. On faster platforms like net or WRAP , throughput in excess of 50 Mbps is possible and up to gigabit speeds with newer standard PCs. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:.
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. The author of m0n0wall would like to thank the authors of these software packages for their efforts.
Maclaren, University of Cambridge. Magne Andreassen magne dot andreassen at bluezone dot no : Remote syslog'ing; some code bits for DHCP server on optional interfaces. Rudi van Drunen r. Francisco Artes falcor at netassassin.
Brian Zushi brian at ricerage dot org : Linux CD burning instructions, documentation review and suggestions. The types of devices supported range from standard PC's to a variety of embedded devices.
It is targeted at embedded xbased PCs. For a list of FreeBSD supported platforms, see this page. Some shown there are not yet functional like MIPS, for example. The only platform supported by m0n0wall at this point is x Exactly how much processor you will need for your particular implementation varies depending on your Internet connection bandwidth, number of simultaneous connections required, what features you will use, etc. For most deployments, a or Pentium processor is sufficient. The CD version of m0n0wall has been reported to work fine for some people with only 32 MB.
When using the CompactFlash or hard drive versions of m0n0wall, expect upgrades to fail with less than 64 MB. This is because m0n0wall stores everything in RAM and uses no swap space - when it runs out of RAM, it has nothing to fall back on.
There are some BIOS settings that may need to be changed for m0n0wall to function properly. This should always be set to "no" or "disable". You most likely won't have to worry about this, but if you have hardware-related issues, we recommend disabling all unnecessary devices in the BIOS, such as onboard sound, and in some cases parallel ports, serial ports, and other unused devices.
If you aren't using it, it is safe to disable it. Also required for this setup is a 1. Any standard floppy drive will work. Starting with 1. Write the disk the same way you would write a hard drive. All Soekris devices are fully compatible with m0n0wall.
For the net and other 45xx models, use the net45xx image. For the net and net, use the net48xx image. For a detailed walk-through of getting up and running with m0n0wall on Soekris hardware, see the m0n0wall Soekris Quick Start Guide.
Use the WRAP images available on the download page. Even in the used market, these boxes are usually out of the price range for a typical m0n0wall installation, and you can buy or assemble a comparable standard PC for far cheaper.
But, if you have one laying around or can find one cheaply, these will run m0n0wall. For pictures and complete instructions, see this page. NexCom's Nexgate line of appliances all support m0n0wall. Contact NexCom for pricing. While these types of configurations work, we don't recommend running any production firewalls under any sort of virtualization.
In fact much of the m0n0wall documentation is written by Chris Buechler using VMware Workstation teams with virtual machines. If you plan to use m0n0wall in VMware for testing purposes, we suggest using Chris Buechler's pre-configured m0n0wall VMware images. Determining the exact hardware sizing for your m0n0wall deployment can be difficult at best, because network environments differ dramatically.
The following will provide some base guidelines on choosing what hardware is sufficient for your installation. Stated throughput numbers are very conservative for most environments, leaving some room for error and future expandability. The following can be used as a rough guide to determining which embedded platform, if any, is suitable for your environment.
The Soekris 45xx line is sufficient for any Internet connection under 10 Mbps. Other features will not cause enough of a performance hit to make a substantial difference. One thing to keep in mind is the maximum throughput between interfaces, if you plan on utilizing a DMZ segment or second LAN segment. A 45xx maxes out at around 17 Mbps.
If you need more than 17 Mbps of throughput between your internal networks, you will need to go with a faster platform. The Soekris 48xx line is sufficient for most Internet connections less than 30 Mbps. A 48xx maxes out at around 40 Mbps. If you need more than 40 Mbps of throughput between your internal networks, you will need to go with a faster platform. Your selection of network cards NIC's is the single most important performance factor in your setup.
A quality NIC can increase your maximum throughput as much as two to three fold, if not more. FreeBSD refers to network cards by their driver name followed by the interface number. Cheap cards like those containing Realtek chipsets FreeBSD rl driver are very poor performers in comparison.
If you are purchasing NIC's for your m0n0wall installation, we strongly recommend purchasing Intel cards. For low throughput environments, like any typical broadband connection 6 Mbps or less, any NIC will suffice. Your CPU will generally be the bottleneck in your system. If you are using good quality NIC's like Intel cards, as a general measure, a Pentium will suffice up to Mbps, a Pentium III will do Mb at wire speed, and for gigabit wire speeds you will need a 2.
You can install as much memory as you like, but even with all features enabled and heavy loads, you will not exhaust 64 MB. At boot, m0n0wall is loaded into RAM and runs from RAM, so the speed and type of storage medium used is not a factor in system performance.
Slower storage mediums like compact flash will take slightly longer to boot than hard drives will, but boot time is the only performance factor in selecting your storage medium. Compact flash is suggested for maximum reliability since it is much less likely to fail than a hard drive. In environments where extremely high throughput through several interfaces is required, especially with gigabit interfaces, PCI bus speed must be taken into account.
When using multiple interfaces in the same system, the bandwidth of the PCI bus can easily become a bottleneck. Most typical motherboards only have one or two PCI buses, and each can run an absolute maximum of MBps, or Mbps.
That's less than one gigabit interface can transfer. Before considering using m0n0wall as an access point, read this FAQ entry. These require drivers that are only found in FreeBSD 5. They will be supported when m0n0wall is on a newer version of FreeBSD. Please report any findings to the contrary to Chris Buechler.
Not all wireless cards support hostap mode!
Thank you Manuel!
Additional Contributors listed in the m0n0wall Handbook. Redistribution and use in any form, with or without modification, are permitted provided that the following conditions are met:. Redistributions must retain the above copyright notice, this list of conditions and the following disclaimer. Neither the name of the m0n0wall Documentation Project nor the names of its contributors may be used to endorse or promote products derived from this documentation without specific prior written permission. The m0n0wall Handbook contains the information you need to further configure your m0n0wall installation after completing this guide. I am currently working on adding a number of example configurations in Chapter 9 of the m0n0wall Handbook.
A filtered bridge is a common way of configuring a DMZ segment. This can be used as a typical DMZ where you have hosts on the LAN interface, but is probably more frequently used to protect servers at a colocation facility where there are no LAN hosts. Remember you cannot access hosts on a bridged interface from a NAT'ed interface , so if you do have a LAN interface set up, you won't be able to access the hosts on the bridged interface from the LAN. The following diagram depicts the example configuration described in this section. The colocation facility has assigned you with the subnet One of those is required for the colo's router, so you end up with 5 usable IP's.
However some are more reliable, less troublesome, and faster than others. In general, you'll find the opinion of the m0n0wall community to be that cheap chipsets, such as Realtek chipsets, are more troublesome and slower than quality NIC's like Intel no matter what software and OS you are running. It is especially important to run quality NIC's if you are running a high traffic firewall. The cheaper ones will flood your system with interrupts when under load.