Configuring Iptables Nat Firewalling
1. Overview of Firewalling
Configuring Iptables
In this chapter we implement packet filtering to protect our Access Point and our local wired network. It is helpful to think of the wireless network as dirty just as we think of the Internet; We have little to no control over who uses the wireless network and for what purposes, so we do not trust it. Further, the data and systems we wish to protect are on our wired LAN. Read more…
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Local DNS Cache for Faster Browsing
Local DNS Cache
A DNS server resolves domain names into IP addresses. So when you request “google.com” for example, the DNS server finds out the address for the domain, and sends your request the right way.
You can run a DNS cache on your computer. This will speed up the process of looking up domain names when browsing. The difference is about 30-60 ms for me. Multiply that difference by the number of websites you visit a day for an approximate estimate of the speed improvement. Of course, all this would be worth it if it weren’t for the fact that setting this up is way too easy. Read more…
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