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Lorenceo

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#8544 9-Jul-2006 00:04
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Hi, this is my first post here, and I require some assistance.

I have recently bought a wireless router, and I have been using it with my dlink DSL-502T
This works, but the dlink is the one doing the routing. It gives the new router the ip address of 10.1.1.3
I want the wireless router to obtain the external ip address from my isp (ihug) and have the dlink function as a modem only.

I have tried putting the dlink into bridge mode from its main configuration page and setting the wireless router up with my login and password via pppoe. This yeilds no results. The adsl connects, the link between the router and the modem is there (but not working properly( , and I do not obtain an external ip address on the router (or the dlinlk).

Any help getting this working would be appreciated.
Cheers.

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barf
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  #40711 9-Jul-2006 16:03

sorry to drop you bad news, but dlink modem wont do that :-)
as we are using PPPoA (not PPPoE) here in NZ you will find that most routers are NAT devices, so if you wanted to keep using your dlink your best option would be to setup a 1:1 NAT mapping to 10.1.1.3 this is usually called a DMZ. But it won't give you an 'internet IP' on the wireless router.
to do that, you will need a modem-router that supports PPP half bridge such as a dick smith XH1175




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Lorenceo

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  #40739 10-Jul-2006 11:48
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Dman.. Was hoping there would be a simple solution to this.
Putting the wireless router in the dmz doesn't do anything, the dlink is still routing. It doesn't do a very good job either.
Roll on ADSL2+ then.. Hopefully that will use PPPoE.

Edit: typo.

Fraktul
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  #40811 11-Jul-2006 13:27
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You may find the following of help: http://www.damo.net.nz/tech/?cat=6



Lorenceo

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  #40813 11-Jul-2006 14:57
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I have the 502T, rather than the 302g.
Tried the stuff on that page, made no difference. It still gives me internal ip addresses via dhcp, so the internet doesn't work.
Thanks anyway..

barf
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  #40821 11-Jul-2006 17:45

Lorenceo: try the Dick Smith router, it is better than any Dlink and supports PPP half-bridge out-of-the-box. You are probably using the Dlink to it's limits already.




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Old Grey Geek
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  #40823 11-Jul-2006 18:03
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Why not forget the bridge and disable DHCP and assign a static ip between the ADSL and the D-Link? you would still have the security of dynamic ip between you and your ISP and thats how I got my DL-524 to work. This means you may have trouble if you want to forward ports through to your ISP but otherwise it works fine.

Lorenceo

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  #40825 11-Jul-2006 18:46
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Because the router in the dlink is useless. I want the wireless router to do it. (Netgear wpnt834)
I'm not too keen on buying more equipment either.

 
 
 

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Old Grey Geek
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  #40827 11-Jul-2006 19:19
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Oh maybe I misunderstood. My 524 is a wireless router with a 4 port switch and that is linked via a viop gateway through the Woosh wireless modem, which is PPPoE. I assume your D-link is an ADSL modem/router then, if that's the case why not have the netgear on static ip, your comp. on static IP and let the D-link run the DHCP?

barf
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  #40840 11-Jul-2006 21:57

Old grey geek: A dynamic IP is not a form of security. Dlinks have poor NAT and connection tracking (if its poor code or a RAM limitation im not sure), they can't handle more than 1000 or so connections, you can't polish a turd.




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Old Grey Geek
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  #40854 12-Jul-2006 10:09
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barf: Old grey geek: A dynamic IP is not a form of security.

So DHCP is for what?

freitasm
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#40856 12-Jul-2006 10:15
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DHCP is just a way to distribute network configuration automatically. From the DHCP FAQ:

DHCP's purpose is to enable individual computers on an IP network to extract their configurations from a server (the 'DHCP server') or servers, in particular, servers that have no exact information about the individual computers until they request the information. The overall purpose of this is to reduce the work necessary to administer a large IP network. The most significant piece of information distributed in this manner is the IP address.






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Fraktul
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  #40857 12-Jul-2006 10:16
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Old Grey Geek:
barf: Old grey geek: A dynamic IP is not a form of security.


So DHCP is for what?


Not security thats for sure. Basically its for the automatic assignment of layer 3 and above networking attributes and configuration for a client device. Depending on the attributes and your DHCP policy you might be able to offer differing levels of network security to devices, eg specify ip addressing using a secured subnet or placing the device on the DMZ. What you seem to be implying is getting a 'random' ip out of dhcp pool provides some soft of security however which it does not.

Old Grey Geek
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  #40858 12-Jul-2006 10:26
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Oh well. We learn something new every day :-)

The reason I had assumed that all these years was that I had been told that a static ip address was a security risk (can't remember who told me this, it may have been some CSR somewhere after telling me to reboot everything in sight in an Indian accent;-) )

freitasm
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#40860 12-Jul-2006 10:34
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A static IP address is not more risky than a dynamic one. If your computer is infected with a trojan for example and it "calls home", it doesn't matter what kind of IP you have.

Every computer connected to the Internet, using static or dynamic addresses is probably being constantly probed, with other computers sending broadcast messages, port scans, etc. This is harmless traffic, background noise. Once a port scan finds something open then it can turn nasty if a exploit is available that uses specific ports for example. But the scan on itself is just a nuisance and traffic consumption.

Also, if you have a router and distribute IP addresses inside your network these are private, not visible from the external network (Internet). Unless someone outside knows what network configuration you have internally, the only way through a NAT router would be to compromise the router itself, or an inside PC - through a trojan installed from a malicious web page for example.

You have to worry more about what people are looking at on their browsers, what programs they bring in on their USB memory keys, what freeeware they install with the latest screensaver, or what attachments they are opening than the nature of the IP addresses, in my opinion.

By the way, don't believe everything you hear or read - not even on these forums. Such is the nature of the Internet.






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Old Grey Geek
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  #40861 12-Jul-2006 10:45
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Thanks for that Mauricio, as clear an concise as ever.
Back to topic.
Has Lorenceos' problem been solved? was I any help at all? can I belive some stuff if I realy want to? should I get some work done today? is this rain wet?

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