Squidguard issue

[Tripple]

Hi,

I'm running a Squid server with Squidguard on a CentOS server with authentication. Because of a bug I like to make an acl for an iPod Touch to use the proxyserver without authentication.
Here are my rules:
source iPodTouch {
ip 192.168.1.109
}

acl {
iPodTouch {
pass any
}
...
}

I my log I can see this:
192.168.1.109 TCP_DENIED/407 1676 CONNECT www.google.com:443 - NONE/- text/html

What am I doing wrong?