Weite
Contributor
Contributor

vSphere Client - Port 903

Hello!

I've a test enviromet with 2 x ESX 4 Server and a vCenter Server. I connect with the vClient to the vCenter Server over a VPN tunnel. When I start the console of a VM, I become the error message "Unable to connect to the MKS: ..... :903.

From the PC with the vClient I can connect over telnet to Port 902, Port 903 doesn't work.

From the vCenter Server I can connect over telnet to Port 902 and 903.

All traffic on VPN will forward. What can I do do correct the problem? Hope you have some ideas.

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7 Replies
Jain
Hot Shot
Hot Shot

I suspect windows firewall is blocking 903 at VIclient side

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--------------------------------- *Jain* | VCP4 | +Please award points, if you found answer useful+
Weite
Contributor
Contributor

The Windows Firewall on the vClient is disabled.

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Jain
Hot Shot
Hot Shot

What about vCenter server firewall ? are you able to telenet to port 903 on vCenter from other PCs in network ?

--------------------------------- *Jain* | VCP4 | +Please award points, if you found answer useful+
Weite
Contributor
Contributor

The firewall on the vCenter server is disabled. It doesn't work ,when I try to connect from a other PCin our network. I've tested 3 PCs.

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jcingle
Contributor
Contributor

Have you tried restarting the network service?

service network restart

This won't disrupt the VMs - only vswif0

If that doesn't resolve the issue verify your IP settings.. (Subnet Mask/Default Gateway)

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Weite
Contributor
Contributor

Thanks for your reply.

I've repaired the problem. I insert in the /etc/vmware/config the value vmauthd.server.alwaysProxy="TRUE"

Now, it works.

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jcingle
Contributor
Contributor

I had the same issue after migrating all of my physical NICs to a Nexus 1000v and restarting the network service resolved the issue.

root@localhost#:> service network restart

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