link-layer encryptors for Ethernet?

james hughes hughejp at mac.com
Wed Feb 9 08:16:18 EST 2005


This is not _just_ an IPsec box. They also have a protocol that  
predates IPsec. This was presented to the "then forming" IPsec group in  
1994 but it was passed over.

 From the admin guide at:
	http://blueridgenetworks.com/support/pdf/ 
VPNRemote%20AccessAdminGuide.pdf

> Blue Ridge VPN uses a recognized approach to network connectivity  
> called Layer 2 Tunneling. This general technique
> is used by sophisticated network switching gear such as VLAN products  
> and Layer 2 switches to make one physical
> “Ethernet” logically appear to be composed of desktops, servers, and  
> office LAN’s that may physically be in separate
> locations.

I believe they do use protocol 50 (even though they are not IPSEC).



On Feb 8, 2005, at 7:36 PM, Steven M. Bellovin wrote:

> In message <efb104146cd912c1b7164652b55c5ff8 at mac.com>, james hughes  
> writes:
>> The following device is a layer 2 tunneling device that has 256 bit  
>> AES
>> at up to 400Mb/s.
>>
>> http://blueridgenetworks.com/products/index.htm
>> http://blueridgenetworks.com/support/borderguard_vpn__serv_res_ctr.htm
>>
>
> Layer 2?  It seems to be an IPsec box.  At the least, their
> Administrator's Guide talks about using IP Protocol 50.
>
> 		--Prof. Steven M. Bellovin, http://www.cs.columbia.edu/~smb
>
>


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