DHCPDISCOVER at times not encrypted

Garcia, Paul D paul-d-garcia at uiowa.edu
Mon May 6 14:43:13 EDT 2013


> >
> > Thanks for the input.
> >
> > I process each line of:
> >
> > def runProcess(exe):
> >     proc = subprocess.Popen(exe, shell=True, stdout=subprocess.PIPE,
> stderr=subprocess.STDOUT)
> >     while (True):
> >         return_code = proc.poll()  # returns None while subprocess is running
> >         line = proc.stdout.readline().strip()
> >         yield line
> >         if (return_code is not None):
> >             break
> >
> > looking for:
> >
> > 	if line.find('EAP-MSCHAPV2: Authentication succeeded') >= 0:
> > 	# 'if 'EAP- MSCHAPV2...' in line:' would probably be more efficient
> 
> You want to watch for a state transition to COMPLETED, not just that EAP
> succeeded, or if you're not doing verbose debugging, then:
> 
> CTRL-EVENT-CONNECTED - Connection to <BSSID> completed (auth)
> 
> Otherwise there's a race because the connection isn't completely up yet
> when the EAP log message is printed, since there's a bunch of steps after
> that to derive keys and complete the association.
> 

Yes, how careless of me.  I can see where this would have the station attempt connection without encryption.  I do see the output containing the text you describe and will make the change.  Also, you mention verbose output and watching for state transition.  I will investigate this as well.

Thanks for pointing me in the right direction.




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