How to check open ports in DataDomain

Question

Hi Admins,

Please help and let us know how to check whether the below required ports are opened or not in between my networker backup server and Data domain.

How can i check this. Is there any commands for DataDomain to check the open ports.

TCP 111 NFS portmapper

UDP 111 NFS portmapper

TCP 161 For the NMC server to query for alerts and statistics

TCP 162 SNMPTRAP for the NMC server to monitor status and events

TCP 2049 NFS

TCP 2051 Replication, if you use CCR to replicate between Data Domain

systems

TCP xxxx 1. Select a random port for NFS mountd. The default port is

2052.

Thanks & Regards,

Dev.

Kleinenbroich · Accepted Answer

Hi,

a comfortable tool to scann for used (open) ports is nmap. Following an example from our environment:

nmap -sT DataDomain_IP_or_hostname

Starting Nmap 5.51 ( http://nmap.org ) at 2016-10-07 00:10

Nmap scan report for xxxxxxx (xxx.xxx.xxx.xxx)

Host is up (0.00047s latency).

Not shown: 990 closed ports

PORT STATE SERVICE

21/tcp open ftp

22/tcp open ssh

80/tcp open http

111/tcp open rpcbind

139/tcp open netbios-ssn

161/tcp open snmp

443/tcp open https

445/tcp open microsoft-ds

2049/tcp open nfs

8009/tcp open ajp13

MAC Address: XX:XX:XX:XX:XX:XX(Unknown)

Regards

Michael

mkeil · Answer

Hi,

from NW server -> DD you can use telnet to check this (telnet ip port).

Telnet on DD is only available in bash mode if you want to check DD -> NW server, it would be safer to do this with EMC support.

Alternatively you can review your firewall logs if anything gets blocked.

Regards

mkeil

jbrooksuk · Answer

Telnet is available in SE mode too, which is less dangerous than being in BASH but, as you say mkeil, also needs support to do this safely.

Since I don't believe SE mode entry is supported outside Dell EMC support.

Regards, Jonathan

Data Domain