Performance Problems ntlm_auth <-> Active Directory under heavy load

Matthew Newton mcn4 at
Thu Mar 19 12:14:19 CET 2015

On Thu, Mar 19, 2015 at 09:44:41AM +0000, A.L.M.Buxey at wrote:
> known about for ages - and we run it (FR) in threaded mode - however there are
> some new bits of work in 3.x code to enable NTLM auth to work better (either
> with connection pool method or using ntlm_auth with helper mode)

Updated patch for Samba has been merged to master, the Samba guys
have been great about it and it should hopefully be in Samba
4.2.1. FreeRADIUS 3 patches pretty much done, hoping to do a new
pull request later today. Will do a FreeRADIUS 2 patch for those
that need it, but not asking for it to be merged.

I've dropped the ntlm_auth helper mode stuff, though the patches
are still out there in the existing pull request. No point when
the code for Samba is in and the libraries are thread-safe.


Matthew Newton, Ph.D. <mcn4 at>

Systems Specialist, Infrastructure Services,
I.T. Services, University of Leicester, Leicester LE1 7RH, United Kingdom

For IT help contact helpdesk extn. 2253, <ithelp at>

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