How to set up my portable for roaming?
Thu Dec 30 01:08:14 PST 2004
I've worked on this for days, and can't quite seem to get something
I have acquired an ultralight notebook for field and away-from-office
work. It has built-in ethernet, and I bought a Belkin 54g (7011) card.
I'd like to do the following:
* Ethernet - rarely used, and usually DHCP'd when connected. Already
have ifplugd handling this.
- Office - I have a Belkin 54g (7001) PCI card in my desktop
machine, with which
I create an ad-hoc network. It's presently unsecured, but I'd
like to at least use
WPA ultimately. Don't want to buy an AP for the office yet, as
this is the only
wireless link here.
- Roaming - Am always attending other offices and sites with all
manner of AP's,
running all manner of security schemes. Also, we work with
wireless hotspots, etc. Ideally, I'd like to be able to
pre-configure some known,
probably secured nets for automatic association, and the ability
to fall back to
association with anything we can find (doubtlessly unsecured,
an SID we can associate with.
I'm running Debian (testing), and would like to achieve all of the
above with just ifplugd, wpa_supplicant, and hotplug (for the sake of
simplicity). I can get all the different bits running (except
wpa_supplicant, which seems to choke on either the configuration or the
office network (the ad-hoc one mentioned above) I'm testing in). When I
tested wpa_supplicant by hand at build/install-time, it seemed to be
working (the debug messages showed it finding the peer, etc).
Presently, I do the following:
- Load the ndiswrapper module at boot-time (/etc/modules)
- Have hotplug watch for the card
- Insert the card
- Hotplug instantiates wpa_supplicant (with -Bw -ixxx -cxxx)
- Hotplug ifup's the interface
- Debian's 'interfaces' file includes:
iface wlan0 inet dhcp
(without the wireless_ parameters above, I can't associate with the
office ad-hoc net, although I'm worried that, with them, I won't be
able to roam, etc...)
- dhclient executes as expected (unless I omit the wireless_ params
- Can successfully ping other hosts
- Remove card
- Interface comes down as expected, but hotplug fails to "killall
leaving that process to consume about 95% processor time until the
machine starts to heat up. wpa_supplicant can't be subsequently
shut down (machine needs to be rebooted).
Sorry about the long-winded explanation, but I wanted to be as clear
as possible :-)
How should I go about all of this? I can post my current config, if
needed - but I'm probably going about it all wrong, anyways...
aust: 0414 830 989
int'l: 614 1483 0989
mattt at abovenetworks.net
Windows XP: 64 bit upgrade to a 32-bit patch for a 16-bit
GUI shell running on top of an 8-bit operating system
written for a 4-bit processor by a 2-bit company who cannot
stand 1 bit of competition (but it's better than a Mac!).
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