dnsAgent

dnsAgent is a tools which can forwarding DNS requests to TCP mode, and prevent DNS spoofing, and use cache to improve the speed.

Usage

1. Start daemon

    # python dnsAgent.py
   

2. Edit /etc/resolv.conf

    # echo "nameserver 127.0.0.1" > /etc/resolv.conf
   

Speed

First request

xx@creac ~ $ time nslookup www.google.com
Server:		127.0.0.1
Address:	127.0.0.1#53

Non-authoritative answer:
Name:	www.google.com
...
Address: 74.125.128.103

real	0m0.108s
user	0m0.009s
sys     0m0.006s

Second request

xx@creac ~ $ time nslookup www.google.com
Server:		127.0.0.1
Address:	127.0.0.1#53

Non-authoritative answer:
Name:	www.google.com
...
Address: 74.125.128.103

real	0m0.015s
user	0m0.008s
sys 	0m0.006s

Tips

1. Requires Python 2.6 or 2.7

2. Install gevent to improve performance