3

Is there way to determine if the LAN connection type is secure or insecure? i.e., the Lan cable connected to machine is by IEEE802.1X or not ?

EDIT:

In Ubuntu 13.04, when I configure 802.1x security settings and plug the ethernet cable from 802.1x switch then I get the network through NetworkManager. Now, If I remove this cable and connect another normal cable then I do not get any network.

How NetworkManager manages this ?

  • So you want to know whether the connection is using EAP? That's a strange definition of “secure”. – Gilles 'SO- stop being evil' Oct 19 '13 at 22:40
  • Sometime, I run out of my English Vocabulary. Never mind. But I am happy you understand the question – SHW Oct 21 '13 at 6:30
1

mii-tool?

You might be able to get this information from the device using the tool mii-tool.

Example

$ sudo mii-tool -v eth0
eth0: negotiated 100baseTx-FD flow-control, link ok
  product info: vendor 00:07:32, model 17 rev 2
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
  link partner: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control

wpa_cli

The other tool that will likely give you this information is wpa_cli. It takes several options and you can query the running wpa_supplicant instance which is from what my research is showing, is what provides the 802.1X layer of security on top of the network connection.

I do not have access to this type of interface so could not work out an actual example but one of the commands will likely give you what you want:

$ wpa_cli status

Check the man page for wpa_cli for other options:

$ man wpa_cli

References

  • I tried above mentioned commands. But it didn't do the job – SHW Oct 22 '13 at 10:13
  • @SHW In what way did they not do the job? – a CVn Oct 22 '13 at 12:35
  • @SHW - can you do me a favor and clarify this a bit? You want to know what EAP protocol is being used or 802.11i? It's a bit confusing in the quagmire: linuxdoc.org/HOWTO/8021X-HOWTO/intro.html#what8021x – slm Oct 22 '13 at 13:02
  • MichaelKjörling and slm, My apology if I am not clear on my question. What I want, is to know, whether Ethernet is connected by using EAP protocol or not. – SHW Oct 23 '13 at 5:30

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.