[squid-users] squid 4 fails to authenticate using NTLM

[Amos Jeffries]

On 23/07/19 7:53 am, zby wrote:
> My problem:  my browser keeps on prompting for authentication.
> Facts:
> 
> Debian 10 x86_64
> squid-4.6 + samba-4.9
> joined AD using "net ads join -U ...". OK.
> wbinfo -t : OK
> wbinfo -P or -p : OK
> wbinfo -i userXYZ : returns data (OK)
> wbinfo -g (well, fails to "deliver", too many users?)
> smbclient -U userXYZ //host/share : works, logs me in

This is irrelevant to Squid. It only tells that the user account has
filesystem access privileges. Nothing about web access privileges, or
whether the *Squid* user account has access to authenticate user logins.


> 
> wbinfo -a domain\\user%pass:
> plaintext password authentication succeeded

 "plaintext" means Basic authentication.

> challenge/response password authentication failed
> 

Challenge/Response could mean anything auth related.


> sqadmin at host13:~$ ntlm_auth --helper-protocol=squid-2.5-ntlmssp
> --domain=ad001
> userw01 Passwd001
> SPNEGO request [userw01 Passwd001] invalid prefix
> BH SPNEGO request invalid prefix
> 

"userw01 Passwd001" is not a SPNEGO token.

see
<https://wiki.squid-cache.org/Features/AddonHelpers#Negotiate_and_NTLM_Scheme>

Pass the helper the "KK" request command and the token you see in the
HTTP headers. For example:

KK TlRMTVNTUAADAAAAGAAYAIwAAABOAU4BpAAAAAoACgBYAAAAEAAQAGIAAAAa...



Amos