ip address?

[sandisk]

Hi I have a question that maybe someone can shed some light on.

Basically I'm with magnet and when I do an ipconfig my ip address obviously differs from my default gateway as I'm using a "2wire modem" that was supplied by magnet.

Now magnet don't allow you access to the modem settings, the way they see it, it's our router and thats it.

Anyway, I got "2wire" drivers and installed the software on my pc and gained access to the router settings without magnets permission. The way I see it is I'm using and paying them so I should be allowed to configure the router what ever way I want!

Anyway, I port forwarded the port I use with bitcomet.

So on bitcomet statistics, it shows up lan ip, and I'm nearly sure that was the default gateway address until today that is.

I had problems logging into the magnet website so I rang up and the techie said, "do an ipconfig, renew,refresh, and then restart your pc".

So I did this and wallah, I could log into the magnet website, it was something to do with cookies and them not allowing me to log into the site.

So while using bitcomet now, I noticed the lan ip seems to be different than before i used the cmd.

The lan ip on bitcomet now shows, NOT the default gateway but just my ip address as when you do an ipconfig.

Is this right? Is this the address that should be forwarded? I'm no use when it comes to this.

I'm still hitting good speeds but it's just bugging me that the lan ip seems to be different.

Thanks in advance

Sandisk

[blacknight]

I'm not 100% sure what you are saying, but if I understand you correctly you are concerned about a private IP vs. a public one?

[aseedig]

Originally Posted by sandisk

Hi I have a question that maybe someone can shed some light on.

Basically I'm with magnet and when I do an ipconfig my ip address obviously differs from my default gateway as I'm using a "2wire modem" that was supplied by magnet.

Yes, thats right. Your IP address has to be different from the default gateway. The default gateway is basically the next router where your router will send any non-local requests to, which are not covered by your subnet mask or any static routing tables on your system.

Greetings

Axel

[oneill.dav]

The local default gateway (your router) will usually have an IP address looking 192.168.X.X. This is the bog standard LAN IP subnet, and each device (your PC being a device) will have a similar, but not identical IP. If this changes on a resetting of your router or passing of the set lease time, then that's the router's local DHCP at work. That being the case, and you have done port forwards, then they will no longer be applicable to the PC running BitComet, as the port forwards would apply to a specific LAN IP that is no longer addressed to your PC. A static IP can be arranged quite easily. See: PortForward.com - Setting Up a Static LAN IP

It works something like this:

PC --> Router --> Internet

Your PC doesn't connect to the internet directly, when you're using a router. It's not a standalone modem, so things will be quite different. The router connects to the internet, and distributes the connection to your PC. So, in order for an application that requires a certain port or a number of ports to be open to work correctly, you would have to forward the ports from your PC (using the LAN IP that is currently assigned to your PC) to the router, and then the router does the rest in allowing traffic to pass through it to and from the internet. Furthermore, you should open the ports in any software based firewall you have running.

Now, this isn't required for all applications. Some are able to avail of UPnP, assuming your router is UPnP compatible. This is where the application automatically interfaces with your router and does all the required port forwarding for you. But I'll try not to confuse the hell out of you by going into too much detail, so I'll stop where I am now.

If you'd prefer, then check out PortForward.com - Port Forwarding by Router for specific instructions on how to port forward based on your EXACT router, and the EXACT application requiring it.

May other guides, including how to configure software firewalls, can be found at PortForward.com - Guides.


EDIT: I've just realized that these threads are dated 2006. I must've drank too much tonight! Oh well.


Seifer.

[Coomkeen]

That's OK Seifer, maybe an old thread but
I found it very interesting anyway.
Routers and port forwarding always baffles me. So thanks.

Ron.

[oneill.dav]

I hope it's like not reading in circles? I was sobering up writing that, and I'm not the best at explaining things in any state, anyhow!

I could re-write it if needed?


Seifer.

[Coomkeen]

No that's OK really.
The link to the guides was brilliant too.

Perhaps you can clear up something for me though...
Why exactly do I need port forwarding?
I've never had any problems, and I used to have a dedicated server and used WebMin and SSL on that.
Is it just for software that doesn't use UPnP?

Ron

PS. Running a Mac and an Airport Extreme router.

[oneill.dav]

Yeah, pretty much. Any application/server software that requires the use of a normally blocked port, that won't configure itself through the router automatically, would need a manual port forwarding. It's all common sense when you think about it (well, when you think about it as much as I have!!! - no, I have nothing better to do ).