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Connecting a router to a larger network (residential and college campus)
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Posted by: Reverend
I'm wondering if anyone can tell me if what I want to do is possible, and if so, point me in the right direction.
Let me first describe my setup:
I have just purchased a wireless + 4 port wired router from linksys. It is connected to a wired router from linksys, which is in turn connected to my dsl modem.
Currently, I have a cable running from a standard (non-uplink) port on the wired router to a standard (non-"internet") port on my wireless router.
The wired router is set up as the dhcp server. The wireless router is set as a router instead of as a gateway. I have dhcp turned off on the wireless router.
Currently, the configuration works fine for me at home. I have one wired computer and one wireless computer (pda) that go through the wireless router. Both are able to access the internet.
However, I will soon be moving back on campus, and I'm looking to use my new wireless router as one layer of protection between myself and the rest of the network. To do this, I am hoping to use the "internet" port on the wireless router to connect to the campus network. From there, I am hoping to connect my wired pc to a standard port on the wireless router, and I am hoping to connect my wireless pda to the router as well.
Is this possible? If so, what settings should I use for my router when I get on campus? Should I enable dhcp, select router or gateway, etc? Will I need to use a crossover cable? Will I actually be able to use the internet port? Or will I be forced to use a standard port? And if I use a standard port, is there any way for me to filter traffic from my campus network through my router as if the campus network was simply the internet or any WAN?
My college network will provide me with one IP address for my dorm room. (I will be using my other IP address for my pda when it is near the campus wireless access points, and not near my own.) The IP address is registered based on the MAC address of whatever computer (or router, if possible, perhaps one of you could speculate as to whether this would be possible) is connected to it.
I understand that perhaps a full answer to my questions cannot be given without specific knowledge of my campus network. One thing I am sure of though is that I will be unable to change any settings or network topography above my router and my own computer.
If there's any other information that you would need to help answer my numerous questions, please ask.
I appreciate you reading this rather long post, and any help you could provide would be greatly appreciated.
Posted by: fibbi
well, as long as the campus setup doesn't mind multiple ips comming from a single port, just plug the uplink port on your router into the LAN port in your room, and you're set.
Posted by: Reverend
The campus will only give me one IP address for my room. Also, I don't have an uplink port on this router, unless the "internet" port acts like an uplink port.
Could you be a bit more specific?
Also, if the "internet" port isn't an uplink port, how does it work?
Posted by: arturo238
If your college uses DHCP on their network, then you need to have it dissabled on your router. If not, I think that it should work fine. Now to the trickier stuff.
It will most likely be impossible for you to use the internet port on your router, but I could be wrong. However, you can filter traffic to your computer by enabling some of the security features in windows (note: these features are only availible in XP, if you dont have XP, get it because it is the best windows OS ever and you need to have the best, right?). The specific features that you need to activate are the remote desktop. Then disable file sharing on all of your drives. What this will do is allow you to log onto your computer using its name or ip. Then you can use your user ID and password to log onto your computer and gain access to your desktop and files remotely. It is easiest to do the connection via an XP equiped machine, but you can DL the client for free from microsoft for any OS better then 98. The final thing that you want to do is in the network device settings. To open, right click on My Network Places and click properties. Get to the properties box for your network adapter and enable the internet connection firwall. Now click on the settings and check the box for Remote Desktop Connection in the able of allowable connections. Click apply and then OK. What you have done is block all incoming packets to your computer (not counting internet browsing or downloading since those are user initiated) but told it to allow those sent by the RMD client. This will allow you to gain access to your computer without letting other people in. As for your PDA, I cannot help you because they really are not my speciality. Hope this information helps.
Posted by: arturo238
Oh and as far as the one IP thing is concerened, you do not have to worry to much. In most networks, the first three sets of numbers define your IP address, and the final number is the computer on the network. It is probable that your college network does not count the final number of the IP, that being the one that you would need to add on to.
Posted by: Reverend
I'm already using Sygate's firewall, which is working fine, and I don't really want to use window's firewall instead (because its much less configurable and much less fun.)
The problem though is that I'd like to use my router to filter traffic instead of relying simply on a software firewall.
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