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I am experiencing a RPC connectivity issue.

I have two RPC servers built on C++.

  • RPC Server 1: Windows 2000, IIS5, network 1
  • RPC Server 2: Windows Server 2008, IIS7, network 1
  • RPC Server 2 is more like an upgrade of RPC Server 1 machine

They both listen on the same port.

  • Computer 1: Windows 7, network 2
  • Computer 2: Windows XP, network 1
  • Computer 3: Windows 7, network 1

I know that there are issues if any firewall is involved, this is not the case.

  • Computer 1 --> RPC Server 1 not working (1722 The RPC server is unavailable)
  • Computer 2 -->RPC Server 1 working
  • Computer 1 --> RPC Server 2 working
  • Computer 2 -->RPC Server 2 working
  • Computer 3 --> RPC Server 1 not working (1722 The RPC server is unavailable)
  • Computer 3 --> RPC Server 2 working

I used rpcping command to test connectivity.

What is strange is that I had a successfully connectivity Computer 1 --> RPC Server 1 with a VPN connection, but only once (first attempt) and I couldn’t reproduce again, even if I deleted temporary internet files and flushed DNS.

masegaloeh
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alex.pulver
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  • What is _between_ the computers and the ancient server? – Michael Hampton Jun 03 '14 at 10:26
  • The same as between the computers and the new server. – alex.pulver Jun 03 '14 at 10:56
  • You didn't describe that either! Exactly what does the network look like? – Michael Hampton Jun 03 '14 at 10:57
  • There is a firewall on network 1, but the connection can be established for other machines in network 1 or outside the network 1. So the firewall allows the connections. The only difference might be the OS, but since I succeeded that only once connection, the OS cannot be the problem. Can be any restrictions between OS versions and internet connectivity? – alex.pulver Jun 03 '14 at 11:19
  • I end up by upgrading the RPC Server 1 to Windows Server 2008 and the problem was solved, but I still asking myself I there are some issues with RPC connection between different operating system versions. – alex.pulver Jun 20 '14 at 09:07

0 Answers0