SQUID Proxy無法連線內部https網站-NONE/503 0 CONNECT

 用SQUID架好Proxy Server後，都蠻順利的，開網站，用LINE，SKYPE等外部的程式都正常。

但要開啟內部的https網站時，就會無法顯示，錯誤訊息會說"網頁可能暫時離線，或是已經遷移到另一個網址"。

在access log裡查到的紀錄都是 "NONE/503 0 CONNECT"。

然後就開始上網到處查，然後有看到有些人提到在squid.conf 裡要加入一行"dns_v4_first on"，雖然感覺這跟我的問題不相關，但就試試吧。

結果在conf裡先搜尋dns的字眼時，看到了這段，"dns_nameservers  8.8.8.8 208.67.222.222"。

DNS居然是指向外部，所以就把內部的DNS SERVER IP加到最前面，重啟服務，就解決這個問題了。

SQUID Proxy Unable to Connect to Internal HTTPS Websites - NONE/503 0 CONNECT

After setting up the SQUID Proxy Server, everything seemed to be working smoothly. Websites loaded fine, and external applications like LINE and Skype functioned properly. However, when trying to access internal HTTPS websites, they would not display, and an error message stating "The webpage might be temporarily down or may have moved to a new address" would appear.

Upon checking the access log, the recorded entries were "NONE/503 0 CONNECT."

I started searching online for a solution and came across a suggestion to add the line "dns_v4_first on" to the squid.conf file. Although it didn't seem directly related to my issue, I decided to give it a try.

While searching for the term "dns" in the configuration file, I came across the following line: "dns_nameservers 8.8.8.8 208.67.222.222."

To my surprise, the DNS servers were pointing to external addresses. So, I added the IP address of the internal DNS server to the beginning of the list, restarted the service, and the problem was resolved.