Hello, I'm having a strange problem. Our network is setup by a technician and previously we used 172.16.0.0/16 series of ips. We have setup a squid server and all the internet acces goes through this squid proxy server. We have decided to change the ip range to 10.180.0.0/19 series of ips. Although i'm not a very professional, i have managed to change them. but our proxy server does not work properly after that. The Authentication methed that we used in our squid is LDAP which is running in other server in our network, and the squid machine too is running in a slave mode (LDAP slave). The errors we are getting are 1124865892.533 0 10.180.1.21 TCP_DENIED/407 1691 CONNECT www.redhat.com:443 - NONE/- text/html 1124866019.340 120461 10.180.1.21 TCP_MISS/000 0 CONNECT www.redhat.com:443 tawia NONE/- - 1124878009.262 125322 10.180.9.248 TCP_MISS/200 26222 GET http://170.20.116.24/bb/getNewsImage? jbswain DIRECT/170.20.116.24 image/jpeg 1124878037.490 0 10.180.9.248 TCP_MISS/000 0 GET http://boldandbeautiful.com/bb/main/images/menu_15-over.gif jbswain NONE/- - 1124878037.897 0 10.180.9.248 TCP_IMS_HIT/304 217 GET http://boldandbeautiful.com/bb/main/images/home_over.gif jbswain NONE/- image/gif 1124878037.984 86 10.180.9.248 TCP_IMS_HIT/304 217 GET http://boldandbeautiful.com/bb/main/images/home_on.gif jbswain NONE/- image/gif Please help me. My squid.conf is given below : http_port 8080 acl QUERY urlpath_regex cgi-bin \? no_cache deny QUERY cache_mem 1024 MB maximum_object_size 256 MB cache_dir ufs /var/spool/squid 10240 16 256 auth_param basic program /usr/lib/squid/squid_ldap_auth -h 127.0.0.1 -p 389 -s one -b ou=internetusers,ou=people,dc=mizoram,dc=gov,dc=in auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours authenticate_ip_ttl 600 seconds refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 acl password proxy_auth REQUIRED acl max_user max_user_ip -s 1 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 443 563 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 563 # https, snews 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 CONNECT method CONNECT http_access deny password max_user http_access allow password http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow all http_reply_access allow all icp_access allow all coredump_dir /var/spool/squid