Squid Reverse Proxy Authentication back to Domain

[AlphaTwin]

Hello all, I have a problem with a Squid Reverse Proxy to a ShoreTel voip phone server. It seems to be function fine except for the authentication.


It would appear that squid is passing the athentication improperly, I will get a microsoft domain login box (screen shot provided) but it will not except the credentials. I get the same login request when I do it without the reverse proxy, when I go directly to the server, but the credentials are excepted, they just don't seem to work through the reverse proxy.

w.w.w./whittierpto.com/images/ericmisc/domain-login-prompt.jpg



I even get the access is denied screen from the ShoreTel Phone server on the other side of the reverse proxy, it just doen't want to authenticate. It's behaving like I'm using the wrong login repeatadly and finally kicking me.

w.w.w./.whittierpto.com/images/ericmisc/access-denied.jpg


I have included my squid.conf file, I'm hoping someone can see a problem that I'm missing.

Thanks
Eric

PS. - The board won't let me post the images directly, I'm hoping everybody can still see how to get to them.

[AlphaTwin]

Here is my squid.conf file.

#
# Recommended minimum configuration:
#
acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 10.0.0.0/8     # RFC1918 possible internal network
acl localnet src 172.16.0.0/12  # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # RFC1918 possible internal network
acl localnet src fc00::/7       # RFC 4193 local private network range
acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines

acl SSL_ports port 443
acl Safe_ports port 80          # http
acl Safe_ports port 21          # ftp
acl Safe_ports port 443         # https
acl Safe_ports port 70          # gopher
acl Safe_ports port 210         # wais
acl Safe_ports port 1025-65535  # unregistered ports
acl Safe_ports port 280         # http-mgmt
acl Safe_ports port 488         # gss-http
acl Safe_ports port 591         # filemaker
acl Safe_ports port 777         # multiling http
acl Safe_ports port 5440
acl Safe_ports port 5447
acl Safe_ports port 5449
acl CONNECT method CONNECT

#
# Recommended minimum Access Permission configuration:
# Reverse Proxy configuration
http_port 80 accel defaultsite=172.17.137.7
http_port 5447 accel defaultsite=172.17.137.7
http_port 5449 accel defaultsite=172.17.137.7
cache_peer 172.17.137.7 parent 80 0 no-query originserver name=myAccel
#cache_peer 172.17.137.7 parent 5447 0 no-query originserver name=myAccel
#cache_peer 172.17.137.7 parent 5449 0 no-query originserver name=myAccel
acl our_sites dstdomain 172.17.137.7
http_access allow our_sites
cache_peer_access myAccel allow our_sites
cache_peer_access myAccel deny all
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager


# Deny requests to certain unsafe ports
http_access deny !Safe_ports

# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports

# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost

#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
http_access allow localnet
http_access allow localhost

# And finally deny all other access to this proxy
http_access deny all

# Squid normally listens to port 3128
# http_port 3128

# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?

# Uncomment and adjust the following to add a disk cache directory.
#cache_dir ufs /var/spool/squid 100 16 256

# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid

# Add any of your own refresh_pattern entries above these.
refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern ^gopher:        1440    0%      1440
refresh_pattern -i (/cgi-bin/|\?) 0     0%      0
refresh_pattern .               0       20%     4320