OpenBSD in ad-hoc mode

03-16-2002

Good morning all. I'm hoping someone may be able to point me in the right direction.

I'm trying to get an OpenBSD 3.0-stable laptop to work in ad-hoc (peer to peer) mode with an Orinoco card.

Settings:

# ifconfig wi0 10.0.0.10 up
# wicontrol -p 3 -f 6 -n peer_test

Firing up netstumbler it fails to pick this up and I cant ping
any other device in peer mode however if I do:

# wicontrol -p 1

Netstumbler imediately picks the device up.

Any one have any pointers?

03-18-2002

OpenBSD does not send out the SSID in its beacons therefore NetStumbler will not find it. I don't know why this is but I am glad it is.

03-19-2002

any idea why I cant ping other devices in the peer to peer
network. Looking at the client manager on my ipaq it cant find a peer to talk to

03-19-2002

Discussing this at the last 2621, we came to the consensus that OpenBSD in the Ad-Hoc mode is bigoted, and will only communicate with other OpenBSD nodes.

It is not clear whether this is a 'bug' or a 'feature', but I have not found any other O.S. that will see an OpenBSD Ad-Hoc device except for another OpenBSD machine...

h1kari · 04-17-2002

When you set a card into port type 3 mode (peer to peer adhoc) it will not send/receive any management packets to negotiate associations and such. This is a standard mode for orinoco/prism2 based cards but it isn't commonly used. The mode that most windows machines use that is referred to as adhoc is actually the ibss mode on the card (port type 4).

This mode is now documented in openbsd-3.1 and you should be able to make use if it. In this mode it isn't real peer-to-peer since you have to have an ibss/adhoc master that sends out the beacon packets and such to advertise the network and then others that sort of "connect" to it. Basically what it boils down to is port type 3 doesn't send out beacon packets (and therefore is very difficult to detect), and port type 4 sends out beacon packets (and is easy to detect).

-h1kari

03-16-2002	#1 (permalink)
Posts: n/a	OpenBSD in ad-hoc mode Good morning all. I'm hoping someone may be able to point me in the right direction. I'm trying to get an OpenBSD 3.0-stable laptop to work in ad-hoc (peer to peer) mode with an Orinoco card. Settings: # ifconfig wi0 10.0.0.10 up # wicontrol -p 3 -f 6 -n peer_test Firing up netstumbler it fails to pick this up and I cant ping any other device in peer mode however if I do: # wicontrol -p 1 Netstumbler imediately picks the device up. Any one have any pointers?

03-19-2002	#4 (permalink)
Posts: n/a	OpenBSD in Ad-Hoc is anti-social Discussing this at the last 2621, we came to the consensus that OpenBSD in the Ad-Hoc mode is bigoted, and will only communicate with other OpenBSD nodes. It is not clear whether this is a 'bug' or a 'feature', but I have not found any other O.S. that will see an OpenBSD Ad-Hoc device except for another OpenBSD machine...

04-17-2002	#5 (permalink)
h1kari Registered Member Join Date: Apr 2002 Location: San Diego, CA Posts: 2	When you set a card into port type 3 mode (peer to peer adhoc) it will not send/receive any management packets to negotiate associations and such. This is a standard mode for orinoco/prism2 based cards but it isn't commonly used. The mode that most windows machines use that is referred to as adhoc is actually the ibss mode on the card (port type 4). This mode is now documented in openbsd-3.1 and you should be able to make use if it. In this mode it isn't real peer-to-peer since you have to have an ibss/adhoc master that sends out the beacon packets and such to advertise the network and then others that sort of "connect" to it. Basically what it boils down to is port type 3 doesn't send out beacon packets (and therefore is very difficult to detect), and port type 4 sends out beacon packets (and is easy to detect). -h1kari __________________ David Hulton <h1kari@dachb0den.com> Senior Researcher, Dachb0den Labs http://www.dachb0den.com

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03-18-2002	#2 (permalink)
Posts: n/a	OpenBSD does not send out the SSID in its beacons therefore NetStumbler will not find it. I don't know why this is but I am glad it is.

03-19-2002	#3 (permalink)
Posts: n/a	any idea why I cant ping other devices in the peer to peer network. Looking at the client manager on my ipaq it cant find a peer to talk to