[Samba] [Samba-it] samba 4.x: centos 7: Bad SMB2 signature for message

[L.P.H. van Belle]

Try again and add : 

    winbind refresh tickets = yes
    winbind offline logon = yes 

if that does not work, i really suggest you upgrade to samba 4.2+  
or set the pc's to use a "lower" SMB prototol. 

Greetz, 

Louis


> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens Dario Lesca
> Verzonden: donderdag 22 oktober 2015 11:03
> Aan: samba at lists.samba.org
> Onderwerp: Re: [Samba] [Samba-it] samba 4.x: centos 7: Bad SMB2 signature
> for message
> 
> Il giorno ven, 25/09/2015 alle 11.39 +0200, Dario Lesca ha scritto:
> 
> > Yesterday, after some day the problem It reappeared
> >
> > Now I try "server signing = mandatory", wait some day and let you
> > know.
> 
> The problem still alive.
> 
> Today Win8* cannot access to server, into log I see this message:
> 
> > Oct 22 09:27:11 s-backup smbd[32645]: STATUS=daemon 'smbd' finished
> starting up and ready to serve connectionssmb_signing_good: BAD SIG: seq 2
> > Oct 22 09:27:11 s-backup smbd[32645]: [2015/10/22 09:27:11.575613,  0]
> ../source3/smbd/process.c:505(receive_smb_talloc)
> > Oct 22 09:27:11 s-backup smbd[32645]: receive_smb: SMB Signature
> verification failed on incoming packet!
> 
> seem a winbind problem, if I restart it, all work fine
> 
> Someone have some other suggest?
> 
> This is my smb.conf:
> 
> Load smb config files from /etc/samba/smb.conf
> rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
> Processing section "[homes]"
> Processing section "[backup]"
> Loaded services file OK.
> Server role: ROLE_DOMAIN_MEMBER
> [global]
> 	workgroup = STUDIO
> 	realm = s-backup.studio.it
> 	server string = Samba Server Version %v
> 	security = DOMAIN
> 	passdb backend = tdbsam:/etc/samba/account.tdb
> 	log file = /var/log/samba/log.%m
> 	max log size = 50
> 	server signing = required
> 	load printers = No
> 	printcap name = /dev/null
> 	local master = No
> 	domain master = No
> 	wins server = 192.168.50.1
> 	winbind enum users = Yes
> 	winbind enum groups = Yes
> 	winbind use default domain = Yes
> 	idmap config * : range = 1000000-9999999
> 	idmap config * : backend = rid
> 	printing = bsd
> 	cups options = raw
> 	print command = lpr -r -P'%p' %s
> 	lpq command = lpq -P'%p'
> 	lprm command = lprm -P'%p' %j
> 	store dos attributes = Yes
> 
> [homes]
> 	comment = Home Directories
> 	read only = No
> 	browseable = No
> 
> [backup]
> 	comment = Cartella con Backup
> 	path = /backup2t/rsnapshot
> 	valid users = @STUDIO\grpbackup
> 	force user = root
> 	force group = root
> 	guest ok = Yes
> 
> Many thanks
> 
> --
> Dario Lesca
> (inviato dal mio Linux Fedora 22 con Gnome 3.16)
> 
> 
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