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iptables and 802.1x authenticator

OT John A. Sullivan III 2 participants 4 messages May 5, 2007

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Hello, all. Does anyone know of an open source linux 802.1x authenticator? I see XSupplicant for the supplicant and FreeRADIUS for the authentication server but I can't seem to find an authenticator.

We've been toying with combining iptables with the ISCS network management project (http://iscs.sourceforge.net) and 802.1x. If we can do what we think we can do, the results should be quite stunning. We should be able to create true, perimeterless network security. That means we can stop LAN based worms dead in their tracks, foil ARP poisoning attacks and other nefarious activities -- all without end point clients (not that we have anything against end point clients).

I'm in the prototype building stage and hence the need for a testbed 802.1x implementation. So, if you can kindly point me in the right direction, I'd greatly appreciate it. Thanks - John

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John A. Sullivan III
Open Source Development Corporation
+1 207-985-7880
[email protected]

Financially sustainable open source development
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#1 lore raw
Quoted 3 lines · John A. Sullivan III

Hello, all. Does anyone know of an open source linux 802.1x authenticator? I see XSupplicant for the supplicant and FreeRADIUS for the authentication server but I can't seem to find an authenticator.

See hostapd: http://hostap.epitest.fi/hostapd/

I never see it implemented for wired networks... But it's the only 802.1x authenticator I know around.

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Quoted 11 lines · Cedric Blancher
Quoted 3 lines · John A. Sullivan III

Hello, all. Does anyone know of an open source linux 802.1x authenticator? I see XSupplicant for the supplicant and FreeRADIUS for the authentication server but I can't seem to find an authenticator.

See hostapd: http://hostap.epitest.fi/hostapd/

I never see it implemented for wired networks... But it's the only 802.1x authenticator I know around.

Thank you, Cedric. I looked at hostap but must have been brain cramping! Now I just need to see if we can create iptables rules based upon what the authentication server returns through the authenticator. If anyone has experience in doing that, please let me know. Thanks - John

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John A. Sullivan III
Open Source Development Corporation
+1 207-985-7880
[email protected]

If you would like to participate in the development of an open source
enterprise class network security management system, please visit
http://iscs.sourceforge.net
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Quoted 1 line · John A. Sullivan III

Thank you, Cedric.

You're welcome.

Quoted 3 lines

Now I just need to see if we can create iptables rules based upon what the authentication server returns through the authenticator. If anyone has experience in doing that, please let me know.

That would be great.

You have to configure your RADIUS in order to push specific attributes linked to user identity, group, whatever to the authenticator, that will do whatever is needed.

I played a bit with usual VLAN assignment on switches and access points. Each user is thus assigned a dedicated VLAN based on his identity when authenticated. Works great, would be nice to have this on hostapd...

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