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LAN Driver & promiscuous to capture outgoing & incoming traffic

 
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Ruslan R. Laishev
Super Advisor

LAN Driver & promiscuous to capture outgoing & incoming traffic

Hi There!

 

I have tried to use LAN Driver I/O interface to  capturing packets from NIC.

I wrote some code and can receive only incomming network frames.

How to get a copy of the send frames? It's possible at all ?

 

6 REPLIES 6
Steven Schweda
Honored Contributor

Re: LAN Driver & promiscuous to capture outgoing & incoming traffic

 
Bob Blunt
Respected Contributor

Re: LAN Driver & promiscuous to capture outgoing & incoming traffic

Also remember that in modern ethernet switches you'll only be getting traffic coming to your specific port/address so

what you see (without proper switch setup) will be very limited.  Some switches allow enabling a port for this, some don't.

 

Unless, of course, you're really using a traditional thick cable with taps and transceivers, DELNIs, repeaters, bridges and friends...

 

bob

Ruslan R. Laishev
Super Advisor

Re: LAN Driver & promiscuous to capture outgoing & incoming traffic

Hello!

 

 

I expect that an ablity ot get a copy of outgoing packets is a feature the LAN Drive. Is not ?

Is there guru any from VMS/Networking Eng ?

Eberhard Heuser
Frequent Advisor
Solution

Re: LAN Driver & promiscuous to capture outgoing & incoming traffic

Take a look into the pcap source code that comes with the simh vax emulator.

 

Hope this helps

Eberhard

Ruslan R. Laishev
Super Advisor

Re: LAN Driver & promiscuous to capture outgoing & incoming traffic

Thanks!

Got the kit, looking into ... PCAP/VMS has been written with VCI ...

 

 

 

 

Why VCI still is not in the VMS docs ?!

Ruslan R. Laishev
Super Advisor

Re: LAN Driver & promiscuous to capture outgoing & incoming traffic

After lot of work get to work small progs used PCA/VCI exclet from the PCAP-VMS Kit.

So, I still only see  incomming packets.

 

 

 

 

Any other ideas ?