NetView Webclient through Firewall

[Uwe.Richter@synthesis.de]

This is a multipart message in MIME format.

We have severe problems connecting the NVWC through a firewall with the 
NV server. We have opened ports 80, 8080 and 8892, 8893 on the firewall 
and 
forced NV to use port 8893 as secondary port (with the option 
"-DportToUse=8893" in the "maptreeserver.reg" file ). Only one map is 
open.
However a trace on the NVWC-Computer and the firewall shows that the 
NetView Server 
opens another arbitrary port to communicate with the Web Client. 
We have open a PMR.  Here the answer:

The process invoked is as follows:- 
1.  client connects to advertised server port (8893) 
2.  server breaks out of accept() & creates new thread w/ 
returnedport number to service requests for client (The Mainline 
Thread/Client Thread connection is still on 8893) 
3.  client creates thread/port to service async events, sits in 
accept() & informs server's new client thread of this new port 
number (Client creates a port for the NV Event Thread/OVw Thread 
connection and listens on it.  It sends this port number to the
server via the Mainline Thread/Client Thread connection.) 
4.  server connects to this clients async port  (The server then 
connects to this port, and thus establishes the NV Event 
Thread/OVw Thread connection.) 
5.  client break out of accept() and starts listening for new async 
events (NV Event Thread/OVw Thread connection is  established 
and functional.) 
So although the web client connects on port 8893, it will eventually 
drop port 8893 and listen on a randomly created port x Currently port x 
can't be restircted in netview, and netview is working as designed. 
If possible, the customer should configure their firewall to allow these
connections to be made for the web client to work.  Otherwise they can 
raise an enhancement request through their csam.

I thing, this isn't a solution for our customer. 
Now the question: Who knows a way to get the NVWC through the 
firewall or to force NetView to use a certain port ? 

Thanks for any help
Uwe

We have severe problems connecting the NVWC through a firewall with the
NV server. We have opened ports 80, 8080 and 8892, 8893 on the firewall and  
forced NV to use port 8893 as secondary port (with the option          
"-DportToUse=8893" in the "maptreeserver.reg" file ). Only one map is open.
However a trace on the NVWC-Computer and the firewall shows that the NetView Server    
opens another arbitrary port to communicate with the Web Client.
We have open a PMR.  Here the answer:

The process invoked is as follows:-                  
1.  client connects to advertised server port (8893)                
2.  server breaks out of accept() & creates new thread w/          
returnedport number to service requests for client (The Mainline        
Thread/Client Thread connection is still on 8893)            
3.  client creates thread/port to service async events, sits in    
accept() & informs server's new client thread of this new port          
number (Client creates a port for the NV Event Thread/OVw Thread        
connection and listens on it.  It sends this port number to the
server via the Mainline Thread/Client Thread connection.)              
4.  server connects to this clients async port  (The server then    
connects to this port, and thus establishes the NV Event                
Thread/OVw Thread connection.)                                          
5.  client break out of accept() and starts listening for new async
events (NV Event Thread/OVw Thread connection is  established  
and functional.)                                                        
So although the web client connects on port 8893, it will eventually    
drop port 8893 and listen on a randomly created port x Currently port x
can't be restircted in netview, and netview is working as designed.    
If possible, the customer should configure their firewall to allow these
connections to be made for the web client to work.  Otherwise they can  
raise an enhancement request through their csam.

I thing, this isn't a solution for our customer.  
Now the question: Who knows a way to get the NVWC through the   
firewall or to force NetView to use a certain port ? 

Thanks for any help
Uwe