[kman42]

I have an airport network behind my cable modem. My desktop is connected via ethernet and almost always on. My two laptops come and go. I have the basestation set up to administer IPs via DHCP. I want the desktop machine to always have the same IP (10.0.1.2) so that I can log in from work using dyndns. Is there a way to force the desktop to always have the same IP, but still let the laptops connect when they are in the house?

kman

[ginoledesma]

I'm not sure if the ABS has the option of assigning IP addresses for a particular computer (based on the MAC address, the unique identifier of a network card), but most of the cheap-o wireless routers do.

If the ABS doesn't have one, then one solution you could do is to have an application like the DynDNS client running on one of your Macs. This client will automatically connect to the Internet every so often to "update" the address its using. Usually, you can sign-up for something like myname.dyndns.org, which will resolve to the IP address your router is assigned. You can configure your router then to redirect incoming requests to whichever Mac should handle it. For example, if one of your Macs should handle incoming web requests and the other for ftp requests.

Usually, the lease for an IP address in a DHCP network for private networks is usually long (sometimes even permanent), though most of the times it may be a first-come, first-served basis. As I've no access to an ABS/AEBS right now, I can't really be of much help with that.

[cowerd]

System Preferences > Networking > Airport

Select Using DHCP with manual address
Assign whatever address you want in the subnet.
Done. There is no step three, etc.

[mitchell_pgh]

Originally posted by cowerd:
System Preferences > Networking > Airport

Select Using DHCP with manual address
Assign whatever address you want in the subnet.
Done. There is no step three, etc.

Ugh, beat me to it!!!

[kman42]

Originally posted by ginoledesma:
I'm not sure if the ABS has the option of assigning IP addresses for a particular computer (based on the MAC address, the unique identifier of a network card), but most of the cheap-o wireless routers do.

If the ABS doesn't have one, then one solution you could do is to have an application like the DynDNS client running on one of your Macs. This client will automatically connect to the Internet every so often to "update" the address its using. Usually, you can sign-up for something like myname.dyndns.org, which will resolve to the IP address your router is assigned. You can configure your router then to redirect incoming requests to whichever Mac should handle it. For example, if one of your Macs should handle incoming web requests and the other for ftp requests.

Usually, the lease for an IP address in a DHCP network for private networks is usually long (sometimes even permanent), though most of the times it may be a first-come, first-served basis. As I've no access to an ABS/AEBS right now, I can't really be of much help with that.

This is what I am trying to do, but my ABS gives my desktop one of several different internal IPs, so I can't configure the ABS to route the traffic correctly.

Cowerd--thanks, that's what I needed.

Next, I want to be able to run some X11 apps on my home desktop from my laptop at work. I have the apps running fine locally and I can ssh into my home machine. What do I need to do to configure X11 to send the window data to my laptop at work from my desktop (I know there is some terminology that I am missing here)? Do I just do 'ssh -X xxx.xxx.xxx.xxx' to get into my home machine (this works fine) and then do the usual 'export DISPLAY=:0'? For some reason I think I remember this is an insecure way to do it.

thanks,
kman