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14 posts

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#22352 25-May-2008 11:09
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Hiya

Can someone please suggest an ADSL2 modem/router available in NZ that does full bridge mode?

I'm wanting to bolt some ADSL onto a firewall appliance at work.

Cheers

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  #133272 26-May-2008 11:19
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Take a look at the Draytek range. Available from Snapper Networks on Auckland's North Shore. www.snappernet.co.nz

http://www.snappernet.co.nz/Packages/FernShopUni/FernShopUni/Pub.Shop.Product/PID/0C3BF9CF/LINK/Pub.Shop.Product_BTN_DETAILS0C3BF9CF/TYPE/details/ROOT/SNAPPER




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"Technician like ninja... live in shadow, move in silence"


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  #133291 26-May-2008 14:03
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You can't "full" bridge a PPoA dsl connection to your firewall unless your firewall has a ppoa client and support for dsl.

However, lots of adsl modems support a half bridge mode where the modem does the PPoA authentication then exposes the ISP assigned wan ip via dhcp to your firewall. 

Basically with a dsl modem in half bridge you can avoid having double nat and avoid the generally useless firewall etc on the DSL modem.  Yay!

If you're using Telstra or Xnet as your ISP be aware that those ISP's assign a wan ip address on a different subnet to their default gateway and this will confuse some half bridge implementations. 

I've used a Dynalink RAT1320 and a Linksys AM300 in half bridge on Telstra, Xnet and Ihug and they both work fine provided you're using the latest firmware.

This guys site has an old but decent blog post showing the basic setup for home use, should give you the idea of how it could work for a work setup:
http://www.ben.geek.nz/adsl-routing-solution-in-detail/


 
 
 
 




14 posts

Geek


  #133308 26-May-2008 15:10
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Yep, the firewall has all the requsite settings - don't worry I've done my homework, I just need to know a model of ADSL that'll go into full transparent bridge mode, such as the old Netgear DG834.

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