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網站監測與網站連線測試，當網站臨時無法連線時，可以檢查是否是個別 ISP 或 網路環境造成的網路連線問題。 (Back to [[Network problem]]) | [[Test connectivity for the web service]]: 網站監測與網站連線測試，當網站臨時無法連線時，可以檢查是否是個別 ISP 或 網路環境造成的網路連線問題。 (Back to [[Network problem]]) | ||
== 網站連線測試 == | == 網站連線測試 == | ||
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* [https://www.uptrends.com/tools/uptime Website Availability Test - Uptrends] {{access | date=2020-03-11}} | * [https://www.uptrends.com/tools/uptime Website Availability Test - Uptrends] {{access | date=2020-03-11}} | ||
* [https://community.spiceworks.com/tools/website-down-check/ Website Down Checker: Down for everyone or Just you?] {{access | date=2022-06-18}} | |||
==== 同時從世界各處測試網站連線 固定頻率自動執行監測 ==== | ==== 同時從世界各處測試網站連線 固定頻率自動執行監測 ==== | ||
* {{Gd}} [https://uptimerobot.com/ Uptime Robot] 免費與付費版均有。主要從美國伺服器連線測試<ref>[https://uptimerobot.com/locations Locations and IPs | Uptime Robot]</ref>。免費版監控週期 5 分鐘、共 50 個監控規則的限制。 {{access | date= | * {{Gd}} [https://uptimerobot.com/ Uptime Robot] 免費與付費版均有。主要從美國伺服器連線測試<ref>[https://uptimerobot.com/locations Locations and IPs | Uptime Robot]</ref>。免費版監控週期 5 分鐘、共 50 個監控規則的限制。 {{access | date=2022-07-14}} | ||
* [http://www.alertra.com/ Alertra Web Site Monitoring] | * [http://www.alertra.com/ Alertra Web Site Monitoring] | ||
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* [http://jetpack.me/support/monitor/ Monitor — Jetpack for WordPress] 教學: [http://www.freegroup.org/2014/04/jetpack-monitor/ Jetpack Monitor 免費 24/7 網站監測服務，WordPress 無法連線自動發送提醒 (免費資源網路社群)]{{access | date=2014-04-05}} | * [http://jetpack.me/support/monitor/ Monitor — Jetpack for WordPress] 教學: [http://www.freegroup.org/2014/04/jetpack-monitor/ Jetpack Monitor 免費 24/7 網站監測服務，WordPress 無法連線自動發送提醒 (免費資源網路社群)]{{access | date=2014-04-05}} | ||
* [https://pulsetic.com/ pulsetic] 免費與付費版均有。免費版監控週期 5 分鐘。無法設定要從世界哪一處進行連線測試。{{access | date=2022-04-08}} | |||
* [http://www.jiankongbao.com/ 监控宝] 從中國、歐美[http://www.jiankongbao.com/monitor 等處]連線測試 {{access | date=2014-07-14}} | * [http://www.jiankongbao.com/ 监控宝] 從中國、歐美[http://www.jiankongbao.com/monitor 等處]連線測試 {{access | date=2014-07-14}} | ||
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* [http://www.websitepulse.com/ WebSitePulse] -> 1. [http://www.websitepulse.com/help/tools.php Free Website Test]: Test from (1)Seattle, WA (2)Munich, Germany (3)Brisbane, Australia 2. 選擇 Web Page Test，可概略呈現地網頁元素下載的所需時間 | * [http://www.websitepulse.com/ WebSitePulse] -> 1. [http://www.websitepulse.com/help/tools.php Free Website Test]: Test from (1)Seattle, WA (2)Munich, Germany (3)Brisbane, Australia 2. 選擇 Web Page Test，可概略呈現地網頁元素下載的所需時間 | ||
* [https://www.uptimedoctor.com/ Uptime Doctor] 免費與付費版均有。自北美、歐洲、亞洲等地方測試。 {{access | date=2017-05-31}} | * [https://www.uptimedoctor.com/ Uptime Doctor] 免費與付費版均有。自北美、歐洲、亞洲等地方測試。 {{access | date=2017-05-31}} | ||
* [https://www.statuscake.com/ StatusCake] 免費與付費版均有。自世界各處伺服器<ref>[https://www.statuscake.com/kb/knowledge-base/what-locations-do-you-have/ What Locations Do You Have | Knowledge Base]</ref>隨機一處測試。免費版監控週期 5 分鐘、共 10 個監控規則的限制<ref>[https://www.statuscake.com/pricing/ Our Pricing | Yearly Website Monitoring Pricing | StatusCake | StatusCake - Website Monitoring]</ref>。。教學: [https://free.com.tw/free-website-monitoring-statuscake/ StatusCake 免費網站監控服務，斷線自動以 Email、簡訊、Skype 通知用戶] {{access | date=2018-10-08}} | * [https://www.statuscake.com/ StatusCake] 免費與付費版均有。自世界各處伺服器<ref>[https://www.statuscake.com/kb/knowledge-base/what-locations-do-you-have/ What Locations Do You Have | Knowledge Base]</ref>隨機一處測試。免費版監控週期 5 分鐘、共 10 個監控規則的限制<ref>[https://www.statuscake.com/pricing/ Our Pricing | Yearly Website Monitoring Pricing | StatusCake | StatusCake - Website Monitoring]</ref>。。教學: [https://free.com.tw/free-website-monitoring-statuscake/ StatusCake 免費網站監控服務，斷線自動以 Email、簡訊、Skype 通知用戶] {{access | date=2018-10-08}} | ||
* ''$'' [https://onlineornot.com/ OnlineOrNot - Free Website and API Monitoring - OnlineOrNot]. Example of [https://hackernews.onlineornot.com/ Hacker News Status] | |||
* 軟體 [http://visualroute.visualware.com/ VisualRoute traceroute server: trace IP address, trace route, IP trace, IP address locations] 測試從VisualRoute到目標網站的連線能力 (含地圖) | * 軟體 [http://visualroute.visualware.com/ VisualRoute traceroute server: trace IP address, trace route, IP trace, IP address locations] 測試從VisualRoute到目標網站的連線能力 (含地圖) | ||
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* [http://www.labnol.org/internet/blogging/test-website-blocked-in-china-or-accessible/3262/ How to Check If Your Website Is Blocked In China or Not] | * [http://www.labnol.org/internet/blogging/test-website-blocked-in-china-or-accessible/3262/ How to Check If Your Website Is Blocked In China or Not] | ||
{{Tips}} 了解什麼是[http://zh.wikipedia.org/wiki/%E9%87%91%E7%9B%BE%E5%B7%A5%E7%A8%8B 中國的防火長城(GFW, Great Firewall of China)]？ | |||
==== 使用國外 VPN 服務測試網路連線 ==== | ==== 使用國外 VPN 服務測試網路連線 ==== | ||
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=== 分析網頁連線下載速度 === | === 分析網頁連線下載速度 === | ||
分析網頁連線下載速度，並提供網站開發者建議的服務或軟體 | |||
[[Optimize webpage speed]] | |||
=== Monitor HTTP request === | |||
追蹤瀏覽器提出的網站網址要求(ex: URL of AJAX JSON) | 追蹤瀏覽器提出的網站網址要求(ex: URL of AJAX JSON) | ||
* [http://www.fiddler2.com/fiddler2/ Fiddler Web Debugger - A free web debugging tool] for {{Win}} | * [http://www.fiddler2.com/fiddler2/ Fiddler Web Debugger - A free web debugging tool] for {{Win}} | ||
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* [http://www.httpwatch.com/ HttpWatch 8.5: Seamless HTTP monitoring for IE and Firefox] for {{IE}} & {{Fx}} | * [http://www.httpwatch.com/ HttpWatch 8.5: Seamless HTTP monitoring for IE and Firefox] for {{IE}} & {{Fx}} | ||
* {{Chrome}} 工具 -> 開發人員工具 -> Network | * {{Chrome}} 工具 -> 開發人員工具 -> Network | ||
=== 觀察HTTP response status code(HTTP回應狀態代碼) === | === 觀察HTTP response status code(HTTP回應狀態代碼) === | ||
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* [https://curl.haxx.se/docs/manpage.html curl] on {{Linux}} or {{Mac}} e.g. {{kbd | key = <nowiki>curl -v -o /dev/null https://www.slideshare.net</nowiki>}} <ref>[https://asciinema.org/a/89998 中華電信有線網路無法連到 slideshare 的測試 - asciinema]</ref> | * [https://curl.haxx.se/docs/manpage.html curl] on {{Linux}} or {{Mac}} e.g. {{kbd | key = <nowiki>curl -v -o /dev/null https://www.slideshare.net</nowiki>}} <ref>[https://asciinema.org/a/89998 中華電信有線網路無法連到 slideshare 的測試 - asciinema]</ref> | ||
=== | === DNS 檢查 === | ||
websites | websites | ||
* {{Gd}} [http://www.whatsmydns.net/ What's My DNS? Global DNS Propagation Checker] {{access | date = 2020-03-24}} 介紹: [http://www.freegroup.org/2011/05/whats-my-dns/ What’s My DNS? 從世界各地的伺服器，檢查網址 DNS 更新情形] | * {{Gd}} [http://www.whatsmydns.net/ What's My DNS? Global DNS Propagation Checker] {{access | date = 2020-03-24}} 介紹: [http://www.freegroup.org/2011/05/whats-my-dns/ What’s My DNS? 從世界各地的伺服器，檢查網址 DNS 更新情形] | ||
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* [http://www.spamhaus.org/ The Spamhaus Project] | * [http://www.spamhaus.org/ The Spamhaus Project] | ||
* [http://www.senderbase.org/ SenderBase] | * [http://www.senderbase.org/ SenderBase] | ||
=== Domain Categorization === | |||
* Cloudflare's categorization e.g. [https://radar.cloudflare.com/domains/feedback/apple.com Cloudflare Radar] of apple.com | |||
=== 偵測使用的 CDN === | === 偵測使用的 CDN === | ||
偵測使用的 CDN ([https://zh.wikipedia.org/zh-tw/%E5%85%A7%E5%AE%B9%E5%82%B3%E9%81%9E%E7%B6%B2%E8%B7%AF 內容傳遞網路], Content Delivery Network或Content Distribution Network) | 偵測使用的 CDN ([https://zh.wikipedia.org/zh-tw/%E5%85%A7%E5%AE%B9%E5%82%B3%E9%81%9E%E7%B6%B2%E8%B7%AF 內容傳遞網路], Content Delivery Network或Content Distribution Network) | ||
* {{Gd}} [https://www.whatsmycdn.com/ What's My CDN?] | * {{Gd}} [https://www.whatsmycdn.com/ What's My CDN?] 偵測 CDN 不能選 Global，可以選 By Region: Asia | ||
* [https://www.ultratools.com/tools/ipWhoisLookupResult WHOIS IP Lookup Tool | UltraTools] | * [https://www.ultratools.com/tools/ipWhoisLookupResult WHOIS IP Lookup Tool | UltraTools] | ||
* [https://tools.keycdn.com/geo IP Location Finder - IP Lookup With Detailed Geolocation Data | KeyCDN Tools] | * [https://tools.keycdn.com/geo IP Location Finder - IP Lookup With Detailed Geolocation Data | KeyCDN Tools] | ||
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== 無法網路連線 == | == 無法網路連線 == | ||
To distinguish which section met trouble | |||
# ping local IP | # ping local IP | ||
# ping Gateway | # ping Gateway | ||
# check DNS... | # check DNS... | ||
# | # ping the remote IP of external website<ref>[https://www.wkb.idv.tw/moodle/mod/page/view.php?id=10467&lang=zh_tw IPv6_2017: IPv6連線互測-ping]</ref> (有些機器會關閉ICMP ECHO，讓我們無法Ping到它) | ||
#* {{Win}} keyin {{kbd | key=<nowiki>ping <IPv4></nowiki>}} e.g. {{kbd | key=<nowiki>ping 8.8.8.8</nowiki>}} (8.8.8.8 is the IP of [https://developers.google.com/speed/public-dns/docs/using?hl=zh-tw Google Public DNS]) | |||
#* {{Win}} keyin {{kbd | key=<nowiki>ping -6 <IPv6></nowiki>}} e.g. {{kbd | key=<nowiki>ping -6 2001:4860:4860::8888</nowiki>}} | |||
== 無法連線到網路的測試步驟 == | == 無法連線到網路的測試步驟 == | ||
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=== 伺服器主機資訊或採用的技術 === | === 伺服器主機資訊或採用的技術 === | ||
伺服器主機資訊或採用的技術，例如網站伺服器、 Javascript 框架、網頁框架、網頁字型 (web fonts)、程式語言等 | |||
* {{Gd}} [http://builtwith.com/ BuiltWith Technology Lookup] | * {{Gd}} [http://builtwith.com/ BuiltWith Technology Lookup] | ||
** 使用方式: | ** 使用方式: (1) [https://chrome.google.com/webstore/detail/builtwith-technology-prof/dapjbgnjinbpoindlpdmhochffioedbn?hl=zh-TW 瀏覽器擴充套件]、(2)線上輸入網址查詢、或 (3) 直接使用 bookmarklet <pre>javascript:location = 'https://builtwith.com/'+location.href.replace(/https?:\/\//i, "");</pre> | ||
** 介紹: | ** 介紹: | ||
** 查詢結果: e.g. [http://builtwith.com/techcrunch.com techcrunch.com Technology Profile of techcrunch.com] {{access | date= 2017-05-28}} | ** 查詢結果: e.g. [http://builtwith.com/techcrunch.com techcrunch.com Technology Profile of techcrunch.com] {{access | date= 2017-05-28}} | ||
* [https://www.wappalyzer.com/ Wappalyzer - Identify technologies on websites] "Wappalyzer uncovers the technologies used on websites." Quoted from website. | * [https://www.wappalyzer.com/ Wappalyzer - Identify technologies on websites] "Wappalyzer uncovers the technologies used on websites." Quoted from website. | ||
** 使用方式: | ** 使用方式: (1) 安裝[https://chrome.google.com/webstore/detail/wappalyzer-technology-pro/gppongmhjkpfnbhagpmjfkannfbllamg?hl=zh-TW 瀏覽器擴充套件]、或 (2) 直接使用 bookmarklet。 | ||
** 介紹: [https://www.minwt.com/pc/17655.html 「Wappalyzer」網站照妖鏡！一鍵顯示網站所用的主機、平台、語言與框架|梅問題．教學網] | ** 介紹: [https://www.minwt.com/pc/17655.html 「Wappalyzer」網站照妖鏡！一鍵顯示網站所用的主機、平台、語言與框架|梅問題．教學網] | ||
** 查詢結果: 如下圖 | ** 查詢結果: 如下圖 | ||
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* [https://searchdns.netcraft.com/ Netcraft - Search Web by Domain] 可查詢伺服器主機的{{Acronym | acronym= OS | def= 作業系統(Operating system)}}、IP及上線時間(uptime)、採用的技術等資訊。 | * [https://searchdns.netcraft.com/ Netcraft - Search Web by Domain] 可查詢伺服器主機的{{Acronym | acronym= OS | def= 作業系統(Operating system)}}、IP及上線時間(uptime)、採用的技術等資訊。 | ||
** 使用方式: | ** 使用方式: (1) 線上輸入網址查詢、或 (2) 直接使用 bookmarklet <pre>javascript:location%20=%20'http://toolbar.netcraft.com/site_report?url='+escape(location);%20void%200</pre> | ||
** 介紹: | ** 介紹: | ||
** 查詢結果: e.g. [http://toolbar.netcraft.com/site_report?url=techcrunch.com Site report for techcrunch.com] | ** 查詢結果: e.g. [http://toolbar.netcraft.com/site_report?url=techcrunch.com Site report for techcrunch.com] | ||
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[[Monitor webpage content update | 追蹤網站內容更新的線上服務]] | [[Monitor webpage content update | 追蹤網站內容更新的線上服務]] | ||
== | == References == | ||
<references /> | <references /> | ||