Nmap scan report for 138.68.237.3
Host is up (0.48s latency).

PORT      STATE    SERVICE      VERSION
22/tcp    open     ssh          OpenSSH 5.3 (protocol 2.0)
| ssh-hostkey: 
|   1024 fa:c3:dd:18:ed:10:6b:bc:22:89:77:15:a7:1f:1f:28 (DSA)
|_  2048 fa:15:65:f5:21:04:10:ae:8b:1d:5f:e1:a2:58:2d:62 (RSA)
25/tcp    filtered smtp
53/tcp    open     domain       ISC BIND 9.11.3-1ubuntu1.11 (Ubuntu Linux)
| dns-nsid: 
|_  bind.version: 9.11.3-1ubuntu1.11-Ubuntu
137/tcp   filtered netbios-ns
138/tcp   filtered netbios-dgm
139/tcp   filtered netbios-ssn
445/tcp   filtered microsoft-ds
1900/tcp  filtered upnp
2869/tcp  filtered icslap
11211/tcp filtered memcache
41725/tcp closed   unknown
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel