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IPv4 Block Registration
spielentwickler 
9/9/08 6:10:24 PM
Guru

So, I'm looking at getting a block of 8 IP addresses through TPG, as I've got one of their static IP plans. I've got a couple of questions though.

1) If you look at the page http://www.tpg.com.au/products_services/ip_addressing.php it says there's a $59 setup fee to have the route setup to the Telstra network. Question is, shouldn't my router be advertising that it connects to my public IP network anyway, thereby having this propagate automatically to the appropriate router above my network. At least, so long as the AS knows of the existance of my network, there should be no problems right?

I tried asking tpg about this, but was first transferred to their coporate department, and when I was asking the girl about it, I mentioned one of the public machines will be a webserver. She then assumes what I really want is web hosting, and I have to correct her several times that I'm looking at registering for a block of IPs, not webhosting. Eventually she tells me she's going to transfer me to tech support to help me, and I get disconnected instead. I'm guessing it wasn't an accident...

2) The planned setup is this (this is a logical map)

 

assuming:

- allocated ppp address 123.123.123.123 (this isn't my real one ;) )

- public block 123.123.123.10/29

- private network address 192.168.3.0/24 (current setup)

- Router: Linksys WRT54GL running DD-WRT (possibly to be running OpenWRT soon)

Router WAN port: public ppp address
Router Internal VLAN1: 123.123.123.10/29
Router Internal VLAN2: 192.168.3.0/24

Router LAN port 1 & 2: VLAN1
Router LAN port 3 & 4 (and wireless): VLAN2

Router VLAN1 interface IP: 123.123.123.11
Router VLAN2 interface IP: 192.168.3.1

Public Devices:
Web Server/DNS 123.123.123.12
VOIP 123.123.123.13
Desktop PC public interface (eth1): 123.123.123.14
Desktop PC private interface (eth0): 192.168.3.9
Desktop PC gateway: 123.123.123.11


Desktop PC won't be routing between its two networks. It can then still access the private network, but will conduct its internet traffic via the public network. This is so I can do gaming and other such stuff without having to set up over 9000 NAT rules on the router.

All other machines will be allocated ips on the private network.

Is this setup the best way to go about it? How will I have to configure the DNS to use my .com domain at home. I'm not worried about reverse dns lookups on the ppp IP, but i'd like the reverse dns on my public block to show my .com domain.

Would it be easier to get full domain hosting elsewhere that allow you to use their nameservers. Could I have it set up so that the domains registered nameservers are elsewhere, but those nameservers query my dns server in turn?

Ultimately, I'd like to have my devices aware of the fact that they are host.domain.com, and preferably have this configured via dhcp so I can have all those settings in one place.

Currently they get their hostname configured this way, and I know you can do the domain as well. I just wonder about the semantics of having this set up properly.


Edited by spielentwickler: 9/9/2008 06:11:27 PM

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segger 
10/9/08 1:09:28 AM
Guru

Quote by spielentwickler
1) If you look at the page http://www.tpg.com.au/products_services/ip_addressing.php it says there's a $59 setup fee to have the route setup to the Telstra network. Question is, shouldn't my router be advertising that it connects to my public IP network anyway, thereby having this propagate automatically to the appropriate router above my network. At least, so long as the AS knows of the existance of my network, there should be no problems right?



Not sure what they mean by that - I assume they just threw in some random text to attempt to justify the setup charge. Basically the TPG routers will manage the route (they'll have either a static to your subnet, via your PPP IP address, or they'll have a dynamically advertised one matching your subnet) - you won't advertise it to them.

I tried asking tpg about this, but was first transferred to their coporate department, and when I was asking the girl about it


TPG are knobs. I'd steer clear of them personally, especially for 'difficult' (i.e. more than the average user asks for) things like this.

Is this setup the best way to go about it?


The alternative is (I'm guessing DD-WRT or OpenWRT can do this) to just run all your PCs on one internal VLAN and use your new block of addresses as static NAT targets - so NAT a single inside address to a single outside address - for multiple addresses if need be.

How will I have to configure the DNS to use my .com domain at home. I'm not worried about reverse dns lookups on the ppp IP, but i'd like the reverse dns on my public block to show my .com domain.


This is something only TPG can do, as it needs to be delegated by whomever has been allocated the IP address space by APNIC. They either modify their PTR records to what you tell them it should be, or through a convoluted hack involving CNAMEs they delegate the block to you so you create your own PTR records. Good luck with that. (Westnet will do either; I don't know if TPG even know what reverse lookups are)

Ultimately, I'd like to have my devices aware of the fact that they are host.domain.com, and preferably have this configured via dhcp so I can have all those settings in one place.


Well you don't need reverse DNS configured so your devices know they're in that domain. The reverse lookup records will just mean others on the interwebs know who your IP addresses are being used by.

Forward lookups (i.e. mapping a name to IP address - standard A records) have nothing to do with TPG however - you can configure those yourself (on your DNS servers or through an interface provided by your DNS host).

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spielentwickler 
10/9/08 5:26:34 AM
Guru

Thanks segger.

I'm aware that the forward lookups will be configured by me, I'm just not sure about the best setup. What I was trying to figure out was, can I have the setup so that the dhcp server, being on the same machine as the name server, can get the required information from teh name servers configuration.

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