What router typically assigns ip?
January 30, 2006 7:22 PM   Subscribe

What type of router typically has a gateway of, I'm used to seeing the typical router use 192.168.*.* but I'm trying to figure out what routers the local apartment unit is using to run their wireless.
posted by skEwb to Computers & Internet (18 answers total)
you may have more luck asking or using nmap. I can set my Linksys to have network with netmask, which would make it do exactly that. (FWIW, the entire range of IP addresses is one of those blocks reserved for private use.) if I were to hazard a guess I'd probably say Cisco or Avaya/Lucent/Proxim. be advised that nmap'ing a router may piss off the network admins.
posted by mrg at 7:28 PM on January 30, 2006

What good would it do you to know what kind of router they use?

Which chunk of RFC1918 space they use is not necessarily indicative of what kind of router it is in any case.
posted by popechunk at 7:29 PM on January 30, 2006

Response by poster: I'm trying to see if I could maybe open up a port for use with kerberose to log into my state university email.
posted by skEwb at 7:31 PM on January 30, 2006

Look for the router's MAC address...

MAC addresses are unique identifiers, assigned by manufacturer, so it's easy to figure out the brand and even the model number in some cases.


That page has a manufacturer lookup from a MAC address, and a link to some explanations about figuring out the MAC in the first place.
posted by sd at 7:37 PM on January 30, 2006

Recent versions of nmap will just tell you the manufacturer of the NIC.
posted by popechunk at 7:39 PM on January 30, 2006

the better option would be to set up a VPN or proxy server at school, then, or ask your network admins to open the port for you. doubtful they'll like you trying to break into the box to set up your own rules, as that appears to be what you're trying to do. to answer your question, you'd have to look at the router, ask the admin or use nmap or some other tool to possibly see if you can do an OS fingerprint or map some of its behavior to a specific device. MAC address lookup may or may not be useful; a great many devices nowadays can have the address changed in software, though there's not always a good reason for someone to have bothered doing it. depends on the admin
posted by mrg at 7:39 PM on January 30, 2006

Actually, the page doesn't explain how to get the MAC for the router itself. But it's not that hard.

Assuming the router's IP is, type "arp" on a command line window (on Windows, OS X, Linux or any unix, the command is the same).

The MAC is composed of 6 pairs of hexadecimal digits, and looks like 00:ff:66:ad:61:df.
posted by sd at 7:41 PM on January 30, 2006

The Airport Express (and possibly the other Airports) uses the 10.1.x.x. internal IPs by default.
posted by holgate at 8:10 PM on January 30, 2006

Response by poster: Might be a cisco router since it only responds to telnet and it brings this up:

User Access Verification

% Bad passwords

Connection to host lost.

I wont mess with it any further as I don't have the password and it seems too much trouble to get into this router, I'll probably ask for forwarding, thanks all for all your responses.
posted by skEwb at 8:20 PM on January 30, 2006

Do you have a computer that you own at school? You may be able to use Hamachi to tunnel all of this over port 80 from your apartment.
posted by popechunk at 8:24 PM on January 30, 2006

I think the default for Apple Airports is 10.1.x.x
posted by camworld at 9:24 PM on January 30, 2006

It's an Airport Express/Extreme. See here. If you've got, sounds like a lot of people are connecting to it.
posted by Orrorin at 9:33 PM on January 30, 2006

Response by poster: The wireless routers that run on provide internet to several apartment units where I live, I have used hamachi before and I should give that a try.
posted by skEwb at 9:48 PM on January 30, 2006

Well, no, it's probably not an Airport. The prompts given exactly match a Cisco IOS-based router, including the default three tries and you're out. Cisco does use the range as a default gateway for at least some of its routers, including the Cisco Intrusion Detection System Module.

There are, ahem, lists of default passwords for Cisco routers floating about the Internet, but since their use could lead to illegal behavior, that's all I have to say about that.
posted by mdevore at 9:55 PM on January 30, 2006

There are, ahem, lists of default passwords for Cisco routers floating about the Internet, but since their use could lead to illegal behavior, that's all I have to say about that.

I'll save you 30 seconds:
posted by I Love Tacos at 10:46 PM on January 30, 2006

You shouldn't need to open a port for Kerberos. Most Kerberos 5 installs should be able to do addressless tickets, which is your biggest problem, and you shouldn't be using 4 if you are anyway. It's not the port, it's the IP in the ticket(s).
posted by kcm at 1:35 AM on January 31, 2006

If it's not there, you may need "noaddresses = false" in the libdefaults section of KRB5.INI. In any case, update to the latest Kerberos for Windows as a first attempt if you're using an old version. Don't use Kerberos 4!
posted by kcm at 1:39 AM on January 31, 2006

Default Password List
nmap with the -sV -O switches will usually give out enough details to determine the device.
posted by Sharcho at 2:10 PM on January 31, 2006

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