This page discusses the difference in tuning networking on various OS's: http://foureleven.org:81/rosetta-stone-performance-tuning.html

See also NetworkingBestPractices

Use of RFC:1918 addresses for routers

This has issues such as

[Host A? <-> [Router B? <-> [Router C? <-> [Router D? <-> [Router E? <-> [Host F?]

Now, Router B has a route to some RFC:1918 space (perhaps Host A is even on RFC:1918 behind NAT), Router D is numbered using RFC:1918 space (differently routable than Router B). Now, if the link from Router D and router E has a smaller MTU than the rest of the network, and Router B has reverse path filtering on, then A can no longer talk to F. If A traceroutes to F then it misses seeing D as well for the same reason.

RFC:1918 is evil and should be avoided at all costs, if you must use it, use it only on the edges on networks you control.

CategoryNetworking