Scratch

I think it's protected.

It is possible to find out the IP of routers through wifi by pinging packets of data to the router and reading the broadcast, but for this you would need some sort of connection to the network, I don't think it would work without connection, unless you created a DLL file to inject itself into your wifi card and ping the network. It would be difficult, but it is cool 
I should try it with my brothers router 

jji7skyline wrote:

Good to know, because what I've been thinking is:

A lot of the wifi networks near where I am have WPA2 protection, but with the external IP, you would be able to connect to the router configuration page, which is protected by HTTP authentication which the default password is blank.

That wont work, because you need to be on the network to enter the configuration page, because the page only exists when you are connected 
It would be very unsecure otherwise.
The default password is never blank. the last modem that I got had a default password of 'administrator'

Last edited by daniel_j (2012-07-26 23:33:12)

jji7skyline wrote:

daniel_j wrote:

jji7skyline wrote:

Good to know, because what I've been thinking is:

A lot of the wifi networks near where I am have WPA2 protection, but with the external IP, you would be able to connect to the router configuration page, which is protected by HTTP authentication which the default password is blank.

That wont work, because you need to be on the network to enter the configuration page, because the page only exists when you are connected 
It would be very unsecure otherwise.
The default password is never blank. the last modem that I got had a default password of 'administrator'

The one we have, and many of our neighbours have has a blank password field. I changed mine, obviously, but I don't know how many people do...

And having to be connected to see the page would make sense, although it might not be true, because port-forwarding is basically forwarding all connections to a port of the external IP to an internal IP. This would mean that the external IP would connect to the router.

My friends' router has no password on the configuration page. He wanted me to port forward so he could set up a Minecraft server, so I typed in the IP to access the settings on my iPod and port forwarded. 

hmm... maybe it is just the modems i've used that always have a password, anyway, i'm certain that you need to be connected to access the config page.

Cool. My WiFi is not easy to hack then 

daniel_j wrote:

Well, yes almost all wifi passwords are easily hacked, especially WPA2-PSK passwords.

Well, they're preshared passwords, so all you need to do is put it through a brute force program... but let's not get ideas here 

daniel_j wrote:

Well, yes almost all wifi passwords are easily hacked, especially WPA2-PSK passwords.

Actually, I think you mean WEP passwords. WPA2 is probably the most secure WiFi so far. But it all really depends on who is creating the key. If it's a 128 bit key, then you are probably going to have to try brute-forcing a 16 character key (which would take a very long time).

jji7skyline wrote:

A lot of the wifi networks near where I am have WPA2 protection, but with the external IP, you would be able to connect to the router configuration page, which is protected by HTTP authentication which the default password is blank.

As daniel_j pointed out: a router that lets you access the configuration page from the external IP address would be very insecure. Usually you need to be on the internal network.

And having to be connected to see the page would make sense, although it might not be true, because port-forwarding is basically forwarding all connections to a port of the external IP to an internal IP. This would mean that the external IP would connect to the router.

Routers do Network Address Translation to allow multiple internal IPs to connect to the internet through a single external IP. Only outgoing connections can be made; an external address can't send data to one behind the NAT until the internal address sends data first. This is because there's no way of describing in packets sent to the router which internal IP address the message should go to.

Port forwarding lets you specifically allow connections from external IPs through a specific external port on the NAT to a specific internal IP/port pair.

Unless the person who configured the router was crazy enough to port forward 192.168.1.1:80 to an external port (or whatever the address of the router's configuration page is), there shouldn't be any way of accessing it without being on the internal network.