Difference between revisions of "DIY"

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== Getting Technical ==
DIY routers overcome the support limitations of commercial units, although until recently this has been at a cost of:
*additional terminology
Most DIY units have been based on superceded PC. Additional hardware will be required:
*modem (if not provided by ISP as modem or Set Top Box)
*ethernet switch (unless only one computer will be accessing the Internet)
*WiFi Access Point
**if required
**might be implemented as a PCI/PCIe WiFi card in the routing PC
=== Hardware ===
Minimum suggested specs are approximately
*CPU - any X86 compatible of 333 Mhz or faster
**ARM CPU may now be viable in lieu x86 compatible see "Strictly for Geeks" below
*RAM - 256 MB
**additional functions, particularly caching, require extra RAM
*storage - 2 GB
**effective caching requires several GB more disk space
*network interfaces
**PCI, PCIe or USB-Ethernet required
**10 Mb/s suffice - unless running ADSL 2 or faster link
**'''NB''' - speed of other devices on the LAN is irrelevant, LAN performance depends on the ethernet switch deployed
Wattage for DIY has been somewhat higher than for commerical routers. A suitable objective, using 2010 or later componentry is 25 W. Lower wattage units are addressed under "Strictly for Geeks" below. CPU wattage is a poor indicator because other chips and peripherals consume somewhat more. Suggested basis for low wattage router:
#HP Proliant Microserver
#mainboards based on C50 CPU - which appears to have been used only in netbooks
#mainboards based on E350 CPU
#mainboards based on Atom CPU are something of an enigma
#*can be the lowest cost available but
#*wattage surprisingly high, because of associated chips
#mainboards based on VIA CPU
#*expensive unless s/hand
#*not particularly low wattage
#mainboards based on Pentium III CPU
#*reliability might be reduced because of age
#*zero cost & acceptable wattage
=== Software ===
Many Linux and BSD can be configured a gateway-router, but it is generally simpler and more watt efficient to use a specialised firewall/gateway distribution. Better known ones are listed in [[Linux_Distribution_Recommendations]] Although BSD based distributions such as Monowall are quite functional, their use would involve an additional learning curve for most people
=== Zoning ===
Software for DIY routers implements similar network zoning to that in commercial routers. An aspect that is different is the colour coding of zones:
*<span style="color:#c93800">'''RED'''</span> for untrusted/unfiltered Internet
*<span style="color:green">'''GREEN'''</span> for most trusted, '''wired''' LAN connections
*<span style="color:blue">'''BLUE'''</span> for less trusted WiFi connections
*<span style="color:#800080">'''PURPLE'''</span> for additional LAN zone
*<span style="color:#FF8000">'''ORANGE'''</span> for Demilitarized Zone, (DMZ)
**not required by most home users
**typically used for stand-alone servers, to which access from the Internet is permitted
== Strictly for Geeks ==
DIY routers based on ARM CPU have become viable during 2012.
#have potential to match commerical routers in wattage and acreage
#*whilst maintaining advantage of frequent software updates
#require more careful matching of hardware and software
#*ARM compilations are not as "portable" as x86 compilations
#**advisable to select hardware having an ARM CPU series matching the compilation
#raspberry pi is best known hardware example - see [[Raspberry Pi]]
#*IPFire is the only well-known firewall/router that has reached '''released''' level for it
#*alternatively, raspbian could be adapted as a firewall/router for it
[[User:Rpeters|Rpeters]]17:48, 23 September 2012 (EST)
[[Category:Technical Info]]

Latest revision as of 11:52, 20 February 2016