Cannot connect to ORACLE server in VPN

Hello ,
May this be a networking question but it deals with oracle database. In a workgroup environment a client PC is not able to connect to the PC in which oracle is installed.
I tried to ping the PC , sometimes it replies back & some times it says request timed out.
I searched on net & it said that oracle should give user authentication to that PC on windows environment. I referred the following link
[http://download.oracle.com/docs/html/B13831_01/external.htm]
but still i am not able to find all computers in that environment as its a workgroup & still can't connect.
ORACLE DATABASE 10g R2_
Windows Server 2008 64-Bit - on which oracle is installed_
Windows XP SP2 - By which user is trying to Connect/Ping to oracle by unsuccessful._
I also used Oracle Administration Assistance for windows but could not find the solution...
Please guide what to do ???
Thanks in advance !!!

DBA4 wrote:
Hello ,
May this be a networking question but it deals with oracle database. In a workgroup environment a client PC is not able to connect to the PC in which oracle is installed.
So what error code does it return?
I tried to ping the PC , sometimes it replies back & some times it says request timed out.
I searched on net & it said that oracle should give user authentication to that PC on windows environment. I referred the following link
[http://download.oracle.com/docs/html/B13831_01/external.htm]
but still i am not able to find all computers in that environment as its a workgroup & still can't connect.
ORACLE DATABASE 10g R2_
Windows Server 2008 64-Bit - on which oracle is installed_
Windows XP SP2 - By which user is trying to Connect/Ping to oracle by unsuccessful._
I also used Oracle Administration Assistance for windows but could not find the solution...
Please guide what to do ???
Thanks in advance !!!

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