RE: [squid-users] 2 squid on the same server

> Ah, that tutorial is about writing an authentication helper (ie
> ncsa_auth). Not an ACL helper.
>
> The difference being that external_acl_type ACL helpers auth*orize* the
> request permission to do something in Squid because it matches an IP
> used by some username.
>
> auth_param helpers auth*enticate* some security username:passtoken
> credentials. They do not assign any permissions, just state whether the
> credentials are valid/invalid.
>
>
> The script I was suggesting takes only the IP and produces the username
> for logging. You need some database, or AD login etc mapping which users
> have been assigned which IP. The script uses that source to find the
> username in the background and present it to Squid via "OK
> user=$username" or "ERR" results.
>
>
> The squid.conf looks something like:
>
> external_acl_type IPUser %SRC /path/to/script
>
> auth_param basic program /path/to/ncsa_auth
>
> # VPN subnet intercepted with NAT
> acl ipuser external IPUser
> acl vpn_subnet src 192.168.1.0/24
> http_access allow vpn_subnet ipuser
>
> # regular subnet who can login
> acl logIn proxy_auth REQUIRED
> acl other_subnet src 192.168.2.0/24
> http_access allow other_subnet logIn
>
> # strange machines we don't know.
> http_access deny all
>
Right...sorry, can I leave the VPN out for the moment because I'm confusing myself with the setup.
So, the current setup uses ncsa_auth. I need to add a secondary authentication mechanism, which checks the external IP address but does not require a username or password.
From what we've said I cannot add 2 mechanisms so I need to pass the auth to a script that can check the IP address. If the IP address does not equal 200.212.34.45 then I need to pass the script a username and password pair, which it can check against the existing ncsa_auth squid_passwd file.
Users accesses proxy, if IP=200.212.34.45 OK, else if username:password=squid_passwd file OK, else ERR.
Do I even need a script for that or can I simply add acl other_subnet src 200.212.34.45 to the existing conf?

Current conf:
auth_param basic realm MySquid proxy server
auth_param basic credentialsttl 2 hours
auth_param basic program /usr/lib/squid/ncsa_auth /etc/squid/squid_passwd
authenticate_cache_garbage_interval 1 hour
authenticate_ip_ttl 2 hours
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
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 1863         # MSN messenger
acl ncsa_users proxy_auth REQUIRED
acl maxuser max_user_ip -s 2
acl CONNECT method CONNECT
http_access deny manager
http_access allow ncsa_users
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access deny to_localhost
http_access deny maxuser
http_access allow localhost
http_access deny all
icp_access allow all
http_port 8080
http_port xx.xxx.xxx.198:80
hierarchy_stoplist cgi-bin ?
cache_mem 100 MB
maximum_object_size_in_memory 50 KB
cache_replacement_policy heap LFUDA
cache_dir aufs /var/spool/squid 40000 16 256
#cache_dir null /null
maximum_object_size 50 MB
cache_swap_low 90
cache_swap_high 95
access_log /var/log/squid/access.log squid
cache_log /var/log/squid/cache.log
cache_store_log none
buffered_logs on
acl QUERY urlpath_regex cgi-bin \?
cache deny QUERY
refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern ^gopher:        1440    0%      1440
refresh_pattern .               0       20%     4320
quick_abort_min 0 KB
quick_abort_max 0 KB
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
half_closed_clients off
visible_hostname MySquidProxyServer
log_icp_queries off
dns_nameservers 208.67.222.222 208.67.220.220
hosts_file /etc/hosts
memory_pools off
forwarded_for off
client_db off
coredump_dir /var/spool/squid
delay_pools 1
delay_class 1 2
delay_parameters 1 -1/-1 125000/125000
                                               
Received on Sat Apr 30 2011 - 17:00:28 MDT