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Old 10th May 2008
ryoken ryoken is offline
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Join Date: May 2008
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Question Modem PPPoE vs OpenBSD PPPoE

Looking at this page from the OpenBSD website:
http://www.openbsd.org/faq/faq6.html

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PPPoE/PPPoA

The Point to Point Protocol over Ethernet (PPPoE) is a method for sending PPP packets in Ethernet frames. The Point to Point Protocol over ATM (PPPoA) is typically run on ATM networks, such as those found in the UK and Belgium.

Typically this means you can establish a connection with your ISP using just a standard Ethernet card and Ethernet-based DSL modem (as opposed to a USB-only modem).

If you have a modem which speaks PPPoE/PPPoA, it is possible to configure the modem to do the connecting. Alternatively, if the modem has a `bridge' mode, it is possible to enable this and have the modem "pass through" the packets to a machine running PPPoE software (see below).

The main software interface to PPPoE/PPPoA on OpenBSD is pppoe(8), which is a userland implementation (in much the same way that we described ppp(8), above). A kernel PPPoE implementation, pppoe(4), has been incorporated into OpenBSD.

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With reference to the bolded paragraph above, is it more secure to allow OpenBSD to handle PPPoE authentication etc. (by setting modem to bridge mode), or is it better to allow the ADSL router/modem to handle all the PPPoE authentication stuff?
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