Bidding Engine & Firewall or other Security measure?

Hi Friends,
SUS has the benefit that it exchanges messages with SRM-Server via XML messages. So we can place a firewall in between to keep hackers out.
Bidding Engine techically is placed within SRM-Server. So easier for hackers to attack our systems.
I have seen there are some Enterprise Services for RFX and RFX-respose too. Is there a way to place a copy of SRM-Server remotely and use it as bidding engine communicating with the SRM-Server (same was as done with SUS) so that we place a firewall in between too? Or are there other security measures to secure public access to our bidding engine?
Thanks and greetings, Julian

John
First of all with out having user ID and password it is not possible for bidders to enter SRM system to submit bids. So Business partners have to be created in SRM with contact person(Bidder) details.
You can try one thing. It is just my thought and I dont know how far it will be viable. I never tried.
Create a dummy business partner(vendor) in SRM and create many contact persons ie one for each vendor with their ID/password and email address. Then select all vendors(like receiving multiple bids from same vendor) and send the bid invitation.
Bidders will login and submit the bids. Then buyer will see the bids from all vendors (actually from one vendor but with different contact persons).
Then buyer can decide on the winning bid and then create a business partner for the winning bid and continue with the purchase activities.
With this you can avoid creating many business partners at the time of creating bid invitations.
Other alternative is, if you dont want to create ID and passwords for Bidders then send tender details to all vendors off line via e-mail and ask them to send the price to Buyer offline.
Regards
Jagdish

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