Hi, My server was brought down by a group in China who were able to use my squid proxy to send and receive requests from their IPs. There were over 370 IPs hitting my server. I'm wondering where I went wrong and what I need to fix to prevent this in the future? Below are a snippet from my cache.log and my squid.conf file with IP obfuscated. One thing I noticed was that they connected through port 443, which I have in my Safe_Ports list. Should I remove all of those ports from my safe list? Any help would be greatly appreciated. Thanks, Chris- My cache.log file ================= 2008/05/27 01:36:21| The request CONNECT 205.188.153.121:443 is DENIED, because it matched 'all' 2008/05/27 01:36:21| The reply for CONNECT 205.188.153.121:443 is ALLOWED, because it matched 'all' 2008/05/27 01:36:21| The request GET http://ad.media-servers.net/st?ad_type=pop&ad_s...ed_pop_types=29&pop_times=1&pop_frequency=0$ 2008/05/27 01:36:22| The request GET http://ad.media-servers.net/st?ad_type=pop&ad_s...ed_pop_types=29&pop_times=1&pop_frequency=0$ 2008/05/27 01:36:22| The request GET http://202.86.6.132/config?.redir_from=?&.tries=...ntl=us&.bypass=&.partner=&.chkP=Y&.done=ht$ 2008/05/27 01:36:22| The reply for GET http://ad.media-servers.net/st?ad_type=pop&ad_...size=053&banned_pop_tyimes=1&pop_frequency$ 2008/05/27 01:36:22| The request GET http://www.clickclickclick.com:80/default.asp is ALLOWED, because it matched 'port80' 2008/05/27 01:36:22| The request GET http://203.209.228.245/isp_verify_user?l=_Dave_M_&p=ty is ALLOWED, because it matched 'port80' 2008/05/27 01:36:22| The request POST http://fly.emirates.com/IBE/SearchAvailability.aspx is ALLOWED, because it matched 'port80' 2008/05/27 01:36:22| The request GET http://edit.in.yahoo.com/config/loginpasswd=23131&.save=1 is ALLOWED, because it matched 'por$ 2008/05/27 01:36:22| The request GET http://fly.emirates.com/ is ALLOWED, because it matched 'port80' 2008/05/27 01:36:22| The reply for GET http://ad.media-servers.net/st?ad_type=pop&adtion=24_pop_types=29&pop_times=1&pop_frequency$ 2008/05/27 01:36:22| The request POST http://fly.emirates.com/IBE/SearchAvailability.aspx is ALLOWED, because it matched 'port80' 2008/05/27 01:36:22| The request POST http://mihen.info/Res/CheckProxy.php is ALLOWED, because it matched 'port80' 2008/05/27 01:36:22| The request GET http://fly.emirates.com/ is ALLOWED, because it matched 'port80' 2008/05/27 01:36:22| storeLateRelease: released 0 objects and on and on... My Squid Config File: ===================== http_port XXX.XXX.XXX.XXX:80 defaultsite=www.mysite.com vhost cache_peer 127.0.0.1 parent 80 0 no-query originserver name=server_1 login=PASS cache_peer_domain server_1 .mysite.com mysite.com hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin \? cache deny QUERY acl apache rep_header Server ^Apache broken_vary_encoding allow apache access_log /var/log/squid/access.log squid debug_options ALL,1 33,2 hosts_file /etc/hosts url_rewrite_host_header off refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 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 # https, snews acl SSL_ports port 873 # rsync 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 Safe_ports port 631 # cups acl Safe_ports port 873 # rsync acl Safe_ports port 901 # SWAT acl purge method PURGE acl port80 port 80 acl CONNECT method CONNECT http_access allow manager localhost http_access deny manager http_access allow purge localhost http_access deny purge http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access deny to_localhost http_access allow port80 http_access allow localhost http_access deny all http_reply_access allow all icp_access allow all visible_hostname www.mysite.com coredump_dir /var/spool/squid
