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# If you want to use VNC remotely without TLS, then you *must*
# pick a mechanism which provides session encryption as well
# as authentication.
#
# If you are only using TLS, then you can turn on any mechanisms
# you like for authentication, because TLS provides the encryption
#
# If you are only using UNIX sockets then encryption is not
# required at all.
#
# NB, previously DIGEST-MD5 was set as the default mechanism for
# QEMU VNC. Per RFC 6331 this is vulnerable to many serious security
# flaws as should no longer be used. Thus GSSAPI is now the default.
#
# To use GSSAPI requires that a QEMU service principal is
# added to the Kerberos server for each host running QEMU.
# This principal needs to be exported to the keytab file listed below
mech_list: gssapi
# If using TLS with VNC, or a UNIX socket only, it is possible to
# enable plugins which don't provide session encryption. The
# 'scram-sha-1' plugin allows plain username/password authentication
# to be performed
#
#mech_list: scram-sha-1
# You can also list many mechanisms at once, and the VNC server will
# negotiate which to use by considering the list enabled on the VNC
# client.
#mech_list: scram-sha-1 gssapi
# Some older builds of MIT kerberos on Linux ignore this option &
# instead need KRB5_KTNAME env var.
# For modern Linux, and other OS, this should be sufficient
#
# This file needs to be populated with the service principal that
# was created on the Kerberos v5 server. If switching to a non-gssapi
# mechanism this can be commented out.
keytab: /etc/qemu/krb5.tab
# If using scram-sha-1 for username/passwds, then this is the file
# containing the passwds. Use 'saslpasswd2 -a qemu [username]'
# to add entries, and 'sasldblistusers2 -f [sasldb_path]' to browse it
#sasldb_path: /etc/qemu/passwd.db
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