Voir : https://wiki.squid-cache.org/ConfigExamples/Authenticate/WindowsActiveDirectory

squid.conf

httpd_suppress_version_string on
auth_param ntlm program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp --domain=aspaway.fr
auth_param ntlm children 50
auth_param ntlm keep_alive off

acl ntlm proxy_auth REQUIRED

http_access allow localnet      ntlm

wbinfo -t
wbinfo --ping-dc
 
ntlm_auth --diagnostics --username=jean --domain=acme.fr