IPsec passthru on Motorola SBG 900

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Hi all,

our locable provider ships Motorola SB 5100 and SBG 900,
the latter one for customers who want WLAN.
To my surprise, the SB 5100 does NOT force you into Routing/NAT
(as many ADSL modems/routers do nowadays), but behaves
quite transparently: It just talks IP over Ethernet like a bridge
to another LAN would do. So if only you hook up a single machine,
you're directly connected to the Net and IPsec works perfectly fine.

My question is: What does the SBG 900 do, especially for WLAN
clients?
1. Does it have a of 'bridge mode' so you could do WLAN without
   NAT for a single client?
2. If you do NAT, will the IPsec passthru feature mentioned in the manual
   work with a Cisco VPN connection? We have a Cisco 3030, and there are
   frequent problems with users doing NAT on some ADSL modem/router.

Thanks for help
Martin

--
  Dr. Martin Pauly     Fax:    49-6421-28-26994            
  HRZ Univ. Marburg    Phone:  49-6421-28-23527
  Hans-Meerwein-Str.   E-Mail: pauly@HRZ.Uni-Marburg.DE  
  D-35032 Marburg                                                          


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