[libvirt-users] Authentication via SASL and LDAP?

Hello, I've recently configured a new virtual machine host running Ubuntu 12.04 server with libvirt and KVM. I am configuring WebVirtMgr ( https://github.com/retspen/webvirtmgr/ ) for users to manage machines via a web interface. This requires access to the host using qemu+tcp, which I have configured as follows: /etc/default/libvirt-bin: start_libvirtd="yes" libvirtd_opts="-d -l" /etc/libvirt/libvirtd.conf: listen_tls = 0 listen_tcp = 1 unix_sock_group = "libvirtd" unix_sock_rw_perms = "0770" auth_unix_ro = "none" auth_unix_rw = "none" auth_tcp = "sasl" The libvirt documentation ( http://libvirt.org/auth.html ) does not specify if it is possible to use SASL with a different authentication method other than DIGEST-MD5. I would like to authenticate users via LDAP - is this possible? I configured LDAP authentication via SASL as follows: /etc/sasl2/libvirt.conf pwcheck_method: saslauthd mech_list: PLAIN LOGIN log_level: 5 saslauthd_path: /var/run/saslauthd/mux auxprop_plugin: ldap /etc/saslauthd.conf ldap_servers: ldap://ldap_ip_addr:389/ ldap_search_base: ou=People,dc=x-es,dc=com ldap_auth_method: none ldap_filter: uid=%u ldap_version: 3 /etc/default/saslauthd START=yes DESC="SASL Authentication Daemon" NAME="saslauthd" MECHANISMS="ldap" MECH_OPTIONS="" THREADS=5 OPTIONS="-O /etc/saslauthd.conf -c -m /var/run/saslauthd -r" Testing the configuration works: # testsaslauthd -u myuser -p mypass 0: OK "Success." However, if I attempt to connect over the libvirt TCP connection I am denied: virsh -c qemu+tcp://my_vm_host/system nodeinfo error: authentication failed: Failed to start SASL negotiation: -4 (SASL(-4): no mechanism available: ) error: failed to connect to the hypervisor Do you know what is incorrect in my libvirt config, or is it not possible to authenticate libvirt via SASL+LDAP? If not, is there somewhere that documents all of the supported mechanisms? Thanks, Andrew Martin