Editing Testing (section)

=== domain name issue ===
Modify the following files if you want to test the domain name before the mapping of domain name and ip was changed really
* C:\WINDOWS\system32\drivers\etc\hosts for {{win}} XP, Win7<ref>[http://tommy.ironman.tw/windows-7-vista-hosts-error/ Azan 黃贊臣 » 在Windows 7 或 Vista 中修改hosts檔的方法]</ref>, Win 10 & Windows Server 2008 R2 Standard
* On Windows 2003 server: edit the file located at {{kbd | key=<nowiki>C:\WINNT\system32\drivers\etc\hosts</nowiki>}}
* On {{Linux}}, input the command {{kbd | key=<nowiki>sudo vi /etc/hosts</nowiki>}}  
<pre>
127.0.0.1       localhost
# ip            domain.com
</pre>
* On {{Mac}}, input the command {{kbd | key=<nowiki>sudo vi /private/etc/hosts</nowiki>}} <ref>[https://www.tekrevue.com/tip/edit-hosts-file-mac-os-x/ How to Edit the Hosts File on Mac OS X - TekRevue]</ref>


Clear the DNS cache
* [http://www.noip.com/support/knowledgebase/how-do-i-flush-my-windows-dns-cache/ How Do I Clear My DNS Cache on Windows? | Support | No-IP] for {{Win}}
* [https://support.apple.com/en-us/HT202516 Reset the DNS cache in OS X - Apple Support] for {{Mac}}

more on [[Web_Ping#DNS.E6.AA.A2.E6.9F.A5 | DNS checking]]