Below, you see a netcat list of my hosts. Most are answering port 5900, but not 2179. The list on the bottom is answering 2179, but not 5900. I need to know for 3 reason why this is, (1) to setup our enterprise firewall, (2) for port health monitoring of our hosts, and (3) just what is going on. I thought that 2179 should be open on all hosts, and that 5900 was only used in legacy cases (at least from what I read from googling around). Why aren't all of my hosts answering 2179?
My hosts are all Server 2008 R2 Datacenter SP1 64-bit. We have a mix of VMs with Server 2008 R2, Win7, and RHEL6, all 64-bit.
Most answering 5900...
[lhco-mshv01] Connection to lhco-mshv01 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv02] Connection to lhco-mshv02 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv03]
[lhco-mshv05] Connection to lhco-mshv05 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv06]
[lhco-mshv07]
[lhco-mshv08] Connection to lhco-mshv08 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv09] Connection to lhco-mshv09 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv10]
[lhco-mshv11] Connection to lhco-mshv11 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv12] Connection to lhco-mshv12 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv13] Connection to lhco-mshv13 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv14] Connection to lhco-mshv14 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv16]
[lhco-mshv17]
[lhco-mshv18] Connection to lhco-mshv18 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv19] Connection to lhco-mshv19 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv20]
[lhco-mshv21]
[lhco-mshv22] Connection to lhco-mshv22 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv23] Connection to lhco-mshv23 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv24] Connection to lhco-mshv24 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv25] Connection to lhco-mshv25 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv26] Connection to lhco-mshv26 5900 port [tcp/vnc-server] succeeded!
[lhco-mshv27] Connection to lhco-mshv27 5900 port [tcp/vnc-server] succeeded!
The others are answering 2179...
[lhco-mshv01]
[lhco-mshv02]
[lhco-mshv03] Connection to lhco-mshv03 2179 port [tcp/vmrdp] succeeded!
[lhco-mshv05]
[lhco-mshv06] Connection to lhco-mshv06 2179 port [tcp/vmrdp] succeeded!
[lhco-mshv07] Connection to lhco-mshv07 2179 port [tcp/vmrdp] succeeded!
[lhco-mshv08]
[lhco-mshv09]
[lhco-mshv10] Connection to lhco-mshv10 2179 port [tcp/vmrdp] succeeded!
[lhco-mshv11]
[lhco-mshv12]
[lhco-mshv13]
[lhco-mshv14]
[lhco-mshv16] Connection to lhco-mshv16 2179 port [tcp/vmrdp] succeeded!
[lhco-mshv17] Connection to lhco-mshv17 2179 port [tcp/vmrdp] succeeded!
[lhco-mshv18]
[lhco-mshv19]
[lhco-mshv20] Connection to lhco-mshv20 2179 port [tcp/vmrdp] succeeded!
[lhco-mshv21] Connection to lhco-mshv21 2179 port [tcp/vmrdp] succeeded!
[lhco-mshv22]
[lhco-mshv23]
[lhco-mshv24]
[lhco-mshv25]
[lhco-mshv26]
[lhco-mshv27]