Datasource listing from Gateway Server

Just a minor point of clarification:

When dynamic datasource discovery is enabled on a gateway (DsServer=1), the gateway server itself does not contact the Integration Server for the datasource list. Instead, it sends a special response to the client, and the client fetches the datasource list via a request that is routed through the gateway.

 

One other tidbit,

A Gateway Server can be configured to dynamically retrieve the datasource list from one (or more) Integration Servers, and then pass the list on to requesting clients.

Or, you can build a static datasource list on the Gateway Server, manually including all the datasources from all Integration Servers, or including only chosen datasources. The downside is that you have to manually maintain the list when using this method, and if you have multiple Gateway servers, it can be a chore.

The upside (of the static list) is that the client response will be much quicker because the Gateway can respond immediately, rather than going to the Integration server(s) at the time of the client request. And of course as mentioned above, this also gives you the ability to provide a subset list of datasources.

Gary

A gateway can act like a pass-thru if configured properly, but you can also list individual datasources on a gateway and the client will use the list from the gateway instead of from the integration server.

One of the advantages to this for us is on our external gateway we disable SSO but on the internal one SSO is enabled.  External clients don't have that delay while their machine attempts to login using their companies credentials.

UDP is turned on and I completly forgot about that setting.  I appreciate your assistance.

Sean

I've been told that the Gateway is like a passthrough to the Integration Server moreso than a caching server where you can limit visibility in the DMSKRNL file.  So that while there isa DMSKRNL for the gateway, it is still using the one of the integration server as its control.

Do you have enable UDP turned off in the PW network Config?  Since the user is on the same subnet as both the servers, the initial UDP broadcast when the client starts up will be responded to by both servers.  If UDP is turned off, then the client will only contact the servers listed explicitly in the Datasource listing and DNSListing tabs.

 HTH,

 

John

Ok, but I guess my question is which one really rules the integration server or the gateway?

If the gateway server is on the same subnet as the integration server and the pw network utility for pw clients machines points to the gateway server why does the datasource show up if the gateway server says no.

A - represents integration server, B - represents gateway server, C - represents pw client.

A, B, and C on the same subnet but C goes thru B to get to A.  A publishes all datasources but B has dmskrnl.cfg that tells C only look at certain datasources but C is seeing datasources from A and B.  The reason I know C is seeing datasource listings from A and B is because in B I have renamed datasource listings in dmskrnl.cfg and the renamed ones are showing up in C.

 In the example above it seems C is receiving info from A and B but really should be only receiving info from B.

Riddle me that Batman. :)

TIA.

Sean

There is currently no facility to restrict datasource visibility based on user name. However, you can restrict by explicit IP or host name, assuming that the client workstation names are resolveable by the gateway.

HTH

Mike

 

I have a datasource that needs to be hidden from everyone but a select few.  All offices have a gateway server which I have customized the dmskrnl.cfg to display only a certain datasources but after I created the datasource that needs to be hidden it showed up in the list for only one office and that office is on the same subnet as the integration server but does not have the entry in the dmskrnl.cfg to display the datasource.  All other offices do not see the datasource and I assume it is an issue with being on the same subnet.

I know the security in pwadmin to limit access to a select few for a datasource and how to add a list of allow and deny in the config but how about removing listing in the same subnet.

I would like to create an entry for the datasource in all gateway server config files but limit display and access to certain employees.  Anyone doing this or able to help me out?

TIA

Sean