Re: [squid-users] kerberos auth does not work for ftp traffic?

From: Sean Boran <>
Date: Wed, 17 Apr 2013 09:57:57 +0200

I'm just using chrome as a client, so the same client as for http/s.
There is no authentications on the ftp server itself (example, its anonymous.
So that scenario should just work, since as you note the client->squid
should negotiate as usual.

On 17 April 2013 09:53, Amos Jeffries <> wrote:
> On 17/04/2013 6:56 p.m., Sean Boran wrote:
>> Hi,
>> Kerberos is authenticating http/s traffic for me from certain client
>> addresses just fine.
>> However ftp is being rejected, does the browser+squid not auth ftp in
>> the same way as http?
>> If ftp does work with kerberos, is there a way (ACL) that ftp traffic
>> can be excluded from kerberos auth?
>> Thanks in advance,
>> Sean
> FTP protocol only supports a form of Basic authentication. So Squid maps FTP
> server authentication to www-auth headers as Basic scheme.
> The link between client and Squid is of course HTTP and can use the full
> range of HTTP schemes normally.
> The two levels of authentication, client->server and client->squid are
> completely independent so the client can login with Negotiate/Kerberos to
> the proxy and Basic to the FTP server simultaeneously. The main problems are
> lack of proper HTTP support (or just Kerberos support) in FTP clients which
> claim to support HTTP proxies.
> Amos
Received on Wed Apr 17 2013 - 07:58:05 MDT

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