From:包子
可以用这个东西封装任何shell,在IDS侧看起来就是“正常”的DNS协议。你的IDS足够聪明吗?
http://www.skullsecurity.org/wiki/index.php/Dnscat
Intro
dnscat is designed in the spirit of netcat, allowing two hosts over the Internet to talk to each other. The major difference between dnscat and netcat, however, is that dnscat routes all traffic through the local (or a chosen) DNS server. This has several major advantages:
- Bypasses pretty much all network firewalls
- Bypasses many local firewalls
- Doesn’t pass through the typical gateway/proxy and therefore is stealthy
There are a lot of advantages to using the DNS protocol. There are, of course, several disadvantages as well:
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