我有一個奇怪的問題與魷魚3。它通常工作，我可以通過代理訪問大多數網站。然而一些網站如squid3無法訪問google.com或bing.com
google.com
bing.com
只是似乎被阻止，但並不總是如此。重新啓動squid3似乎沒有幫助，或者清除/ var/spool/squid3（緩存）目錄。
如果我登錄到squid3機器上運行，並
wget --no-proxy google.com
那麼就沒有問題但是如果我通過它從不響應代理wget的。大多數其他網站都可以訪問，包括我在此時通過代理使用的stackoverflow.com。任何想法可能是關於google.com和bing.com的特別之處，以便squid3對待它們的方式不同，並且squid3 conf文件中是否存在可能與此類行爲有關的任何設置。
我也有同樣的問題。我的問題引起的ipv6連接問題。 Squid3支持ipv6和ipv4協議。如果你的服務器不能連接ipv6而遠程服務器更喜歡ipv6，那麼squid也更喜歡ipv6，並且不能像訪問日誌那樣檢索數據。
首先嚐試ipv6連接與ping。
ping6 ivp6.google.com
如果ping沒有響應，我們先配置squid3爲首選ipv4。
搜索在squid.conf裏
TAG: dns_v4_first
後
#Default:
#dns_v4_first off
添加
dns_v4_first on
然後，重新啓動服務器squid3
service squid3 restart
這是我修復之前的訪問日誌。
1352760882.854 796 88.my.ip.108 TCP_MISS/000 0 GET http://connect.facebook.net/en_US/all.js [squiduser] DIRECT/connect.facebook.net -
1352760885.717 69 88.my.ip.108 TCP_MISS/000 0 GET http://www.google.com.tr/complete/search? [squiduser] DIRECT/www.google.com.tr -
1352760886.250 13 88.my.ip.108 TCP_MISS/000 0 GET http://www.google.com.tr/complete/search? [squiduser] DIRECT/www.google.com.tr -
1352760887.011 369 88.my.ip.108 TCP_MISS/000 0 GET http://www.google.com.tr/complete/search? [squiduser] DIRECT/www.google.com.tr -
1352760887.989 42 88.my.ip.108 TCP_MISS/000 0 GET http://www.google.com.tr/complete/search? [squiduser] DIRECT/www.google.com.tr -
1352760888.984 75 88.my.ip.108 TCP_MISS/000 0 GET http://www.google.com.tr/complete/search? [squiduser] DIRECT/www.google.com.tr -
1352760897.351 8165 88.my.ip.108 TCP_MISS/000 0 GET http://www.google.com.tr/search? [squiduser] DIRECT/www.google.com.tr -
1352761072.531 10970 88.my.ip.108 TCP_MISS/000 0 GET http://www.google-analytics.com/__utm.gif? [squiduser] DIRECT/www.google-analytics.com -
1352761072.533 10272 88.my.ip.108 TCP_MISS/000 0 GET http://apis.google.com/js/plusone.js [squiduser] DIRECT/apis.google.com -
1352761072.535 10262 88.my.ip.108 TCP_MISS/000 0 GET http://connect.facebook.net/en_US/all.js [squiduser] DIRECT/connect.facebook.net -
這是我的完整魷魚配置。我使用squid作爲匿名代理服務器。
2012/11/14 00:09:02| Processing Configuration File: /etc/squid3/squid.conf (depth 0)
2012/11/14 00:09:02| Processing: auth_param basic program /usr/lib/squid3/ncsa_auth /etc/squid3/squid.passwd
2012/11/14 00:09:02| Processing: auth_param basic children 5
2012/11/14 00:09:02| Processing: auth_param basic realm Squid proxy-caching web server
2012/11/14 00:09:02| Processing: auth_param basic credentialsttl 2 hours
2012/11/14 00:09:02| Processing: acl manager proto cache_object
2012/11/14 00:09:02| Processing: acl localhost src 127.0.0.1/32 ::1
2012/11/14 00:09:02| Processing: acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1
2012/11/14 00:09:02| Processing: acl CONNECT method CONNECT
2012/11/14 00:09:02| Processing: http_access allow manager localhost
2012/11/14 00:09:02| Processing: http_access deny manager
2012/11/14 00:09:02| Processing: http_access allow localhost
2012/11/14 00:09:02| Processing: acl ncsaauth proxy_auth REQUIRED
2012/11/14 00:09:02| Processing: http_access allow ncsaauth
2012/11/14 00:09:02| Processing: http_access deny all
2012/11/14 00:09:02| Processing: http_port 8880
2012/11/14 00:09:02| Processing: coredump_dir /var/spool/squid3
2012/11/14 00:09:02| Processing: refresh_pattern ^ftp: 1440 20% 10080
2012/11/14 00:09:02| Processing: refresh_pattern ^gopher: 1440 0% 1440
2012/11/14 00:09:02| Processing: refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
2012/11/14 00:09:02| Processing: refresh_pattern (Release|Packages(.gz)*)$ 0 20% 2880
2012/11/14 00:09:02| Processing: refresh_pattern . 0 20% 4320
2012/11/14 00:09:02| Processing: dns_v4_first on
2012/11/14 00:09:02| Processing: forwarded_for delete
2012/11/14 00:09:02| Processing: request_header_access Allow allow all
2012/11/14 00:09:02| Processing: request_header_access Authorization allow all
2012/11/14 00:09:02| Processing: request_header_access WWW-Authenticate allow all
2012/11/14 00:09:02| Processing: request_header_access Proxy-Authorization allow all
2012/11/14 00:09:02| Processing: request_header_access Proxy-Authenticate allow all
2012/11/14 00:09:02| Processing: request_header_access Cache-Control allow all
2012/11/14 00:09:02| Processing: request_header_access Content-Encoding allow all
2012/11/14 00:09:02| Processing: request_header_access Content-Length allow all
2012/11/14 00:09:02| Processing: request_header_access Content-Type allow all
2012/11/14 00:09:02| Processing: request_header_access Date allow all
2012/11/14 00:09:02| Processing: request_header_access Expires allow all
2012/11/14 00:09:02| Processing: request_header_access Host allow all
2012/11/14 00:09:02| Processing: request_header_access If-Modified-Since allow all
2012/11/14 00:09:02| Processing: request_header_access Last-Modified allow all
2012/11/14 00:09:02| Processing: request_header_access Location allow all
2012/11/14 00:09:02| Processing: request_header_access Pragma allow all
2012/11/14 00:09:02| Processing: request_header_access Accept allow all
2012/11/14 00:09:02| Processing: request_header_access Accept-Charset allow all
2012/11/14 00:09:02| Processing: request_header_access Accept-Encoding allow all
2012/11/14 00:09:02| Processing: request_header_access Accept-Language allow all
2012/11/14 00:09:02| Processing: request_header_access Content-Language allow all
2012/11/14 00:09:02| Processing: request_header_access Mime-Version allow all
2012/11/14 00:09:02| Processing: request_header_access Retry-After allow all
2012/11/14 00:09:02| Processing: request_header_access Title allow all
2012/11/14 00:09:02| Processing: request_header_access Connection allow all
2012/11/14 00:09:02| Processing: request_header_access Proxy-Connection allow all
2012/11/14 00:09:02| Processing: request_header_access User-Agent allow all
2012/11/14 00:09:02| Processing: request_header_access Cookie allow all
2012/11/14 00:09:02| Processing: request_header_access All deny all
如果您有新問題，請點擊[問問題]（http://stackoverflow.com/questions/ask）按鈕。如果你有足夠的聲望，[你可以upvote]（http://stackoverflow.com/privileges/vote-up）這個問題。或者，將其「明星」作爲最愛，並且您會收到任何新答案的通知。 – jjnguy
謝謝，你救了我的一天 –
哇哇謝謝！...添加'dns_v4_first on'解決了我的問題！ –
請記住，dns_v4_first只適用於較新的squid3版本。 如果你運行例如一個debian6服務器，你有沒有這個配置開關的squid3-3.1.6。
爲你所編輯的配置行
tcp_outgoing_address SERVERIP all
哪裏SERVERIP是您的服務器的IP舊版本。
僅供參考。 google.com正在重新開始工作。這似乎是一個間歇性問題。 – bradgonesurfing
當您打開網站時會發生什麼？在提出請求時，你在squid的日誌中看到了什麼？ – Mikec