检测端口有没有开放自己nmap一下就完了
slixurd@slixurd-pc:~$ nmap -v -Pn -p 5353 8.8.8.8
Starting Nmap 6.40 (
http://nmap.org ) at 2014-05-10 00:29 CST
Initiating Parallel DNS resolution of 1 host. at 00:29
Completed Parallel DNS resolution of 1 host. at 00:29, 0.00s elapsed
Initiating Connect Scan at 00:29
Scanning
google-public-dns-a.google.com (8.8.8.8) [1 port]
Completed Connect Scan at 00:29, 2.00s elapsed (1 total ports)
Nmap scan report for
google-public-dns-a.google.com (8.8.8.8)
Host is up.
PORT STATE SERVICE
5353/tcp filtered mdns