[Samba] Avoiding packet fragmentation for UDP 750

Andrew Bartlett abartlet at samba.org
Fri Jul 6 20:51:26 UTC 2018

On Fri, 2018-07-06 at 10:55 -0500, Arthur Ramsey via samba wrote:
> Hello,
> I'm trying to prevent packet fragmentation for winbind => Samba DC 
> traffic on UDP 750 (Kerberos) due to VPN encapsulation.  I have TCP MSS 
> adjustment set to prevent this for TCP but I'm trying to solve for this 
> traffic too without modifying MTU which would affect other traffic.
> It isn't clear from the documentation the effect of max xmit.

This parameter is for SMB1 only, I'll propose a patch to the docs. 
Also Samba doesn't use Kerberos 4, Kerberos 5 is on port 88.

Andrew Bartlett
Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba

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