[Wizard] Wizard grunt
Wed Sep 17 08:22:03 2003
> Nonono - the DSL link runs ATM. Thats why you configure VCI/VPI's.
> You then run either PPP over Ethernet over ATM or PPP over ATM.
> This is why you'll not get 30k/sec over your 256k DSL link..
Indeed. Sorry, I probably wasn't clear about what I meant there. I
realise the ATM layer is always there, but the existance of an ethernet
layer does change the way the DSL modem appears to work - as well as
wasting some more bandwidth, of course.
There is a 3rd option though: just running Ethernet over ATM, with no
PPP at all. Personally, I liked that system - no "authentication
servers" to be constantly playing up. Oh well.
>>Basically, it'll work, it's not horribly insecure, but I would never do
>>it. I can easily see worm traffic making it onto the DSLAM's local lan,
>>and from there to you
> There's no "local LAN" per se. You shouldn't (I hope!) see any ethernet
> L2 traffic from your neighbours. Perhaps, for example, you'll get this
> on a shared cable fabric.
Fair enough. I can't claim enough knowledge about the ISP's end of
things... but I wouldn't trust Telstra to configure a DSLAM to be
secure, given that they seem to have trouble configuring them to work :-P