疑難雜症萬事通
在網路上遇到任何問題都可以在這邊找找看唷

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關於 dns port ，我們在網路上蒐集到這些相關的討論、資訊與評價

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在dns port這個產品中，有8篇Facebook貼文，粉絲數超過10萬的網紅BorntoDev，也在其Facebook貼文中提到， 🔥 สวัสดีเพื่อน ๆ ทุกคน วันนี้แอดมาสรุปให้สั้น ๆ กับความรู้เรื่อง UDP Protocol นั่นเอง !! . มันคืออะไร ทำงานยังไง ถ้าพร้อมแล้วไปอ่านกันได้เลยจ้า . 🌟 U...
　同時也有3部Youtube影片，追蹤數超過5萬的網紅hokoonho，也在其Youtube影片中提到，Wifi 速度測試, 使用 Mate 20 Pro 作測試 MW5 實測速度 (10次平均值) upload: 253 Mbps download: 398 Mbps latency: 10 ms MW6 實測速度 (10次平均值) upload: 256 Mbps download: 412 ...

dns port 在 BorntoDev Facebook 的精選貼文

BorntoDev By BorntoDev

2021-07-08 17:00:05 有 142 人按讚
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🔥 สวัสดีเพื่อน ๆ ทุกคน วันนี้แอดมาสรุปให้สั้น ๆ กับความรู้เรื่อง UDP Protocol นั่นเอง !!
.
มันคืออะไร ทำงานยังไง ถ้าพร้อมแล้วไปอ่านกันได้เลยจ้า
.
🌟 UDP หรือ User Datagram Protocol - เป็นโปรโตคอลที่ใช้สื่อสารผ่านอินเทอร์เน็ตสำหรับการรับส่งข้อมูล เช่น การเล่นวิดีโอ และ การค้นหา DNS เป็นต้น ส่งข้อมูลได้อย่างรวดเร็ว แต่อาจจะเกิด Packet Loss ในระหว่างส่งข้อมูลได้นั่นเอง
.
⚙️ การทำงาน
.
ส่ง Packet ไปยังคอมพิวเตอร์เป้าหมายโดยตรง โดยไม่ต้องทำการเชื่อมต่อก่อน จากนั้นจะทำการระบุตำแหน่งของ Packet เหล่านั้น เพื่อตรวจสอบว่าข้อมูลถึงปลายทางหรือไม่ ถ้าหากมีข้อมูลสูญหายระหว่างการส่ง UDP จะไม่ส่งซ้ำ จึงเกิด Packet Loss ได้ง่าย และนี่คือข้อเสียของเจ้า UDP นั่นเอง
.
💡 ส่วนประกอบของ Header
.
UDP ใช้ Header เพื่อบรรจุข้อมูลเพื่อรับส่งข้อมูลนั่นเอง ประกอบด้วย
Source port number : หมายเลขของผู้ส่ง
Destination port number : Port ของ Datagram
Length : ความยาวของ Header หน่วยเป็นไบต์
Checksum : ใช้ในการตรวจสอบข้อผิดพลาด
.
🌈 การใช้งาน
.
ใช้ในการสื่อสารที่ต้องการความรวดเร็ว เช่น การรับส่งข้อมูลด้วยเสียงหรือวิดีโอ เช่น VOIP (voice over IP) เป็นบริการโทรศัพท์ทางอินเทอร์เน็ต การสนทนาทางโทรศัพท์แบบนิ่ง ๆ จะดีกว่าการสนทนาที่ชัดเจนแต่ช้านั่นเอง หรือในเกมออนไลน์บางประเภทก็ใช้ UDP เนื่องจากเซิร์ฟเวอร์ DNS ต้องรวดเร็วและมีประสิทธิภาพ
.
📑 Source : https://searchnetworking.techtarget.com/definition/UDP-User-Datagram-Protocol, https://www.cloudflare.com/learning/ddos/glossary/user-datagram-protocol-udp/
.
borntoDev - 🦖 สร้างการเรียนรู้ที่ดีสำหรับสายไอทีในทุกวัน

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BorntoDev (www.BorntoDev.com) เว็บไซต์ที่เกี่ยวกับการสอนการพัฒนาโปรแกรมหรือผลงานทางด้านคอมพิวเตอร์ จัดทำขึ้นเมื่อ 27 ตุลาคม 2556 โดยมีจุดมุ่งหมายเพื่อต้องการให้ผู้ที่สนใจพัฒนาซอฟต์แวร์ แอปพลิเคชั่น หรือ ผลงานทางด้านคอมพิวเตอร์ได้มีแหล่งในการเรียนรู้ที่ง่าย และ สนุก ไม่เน้นทฤษฏีจนทำให้ท้อหรือถอดใจไปก่อนจัดทำขึ้นโดยกลุ่มคนที่ต้องการจะเห็นความเปลี่ยนแปลงทางด้านเทคโนโลยี และ มีความหวังว่าจะมีนักพัฒนารุ่นใหม่ของไทยที่มีผลงานที่ยิ่งใหญ่ขึ้นมาได้ โดยจะใช้หลักการ “เน้นสนุก สอนเข้าใจ ทำได้จริง” สามารถเข้ามาเรียนรู้การพัฒนาซอฟต์แวร์ได้ตั้งแต่ระดับมัธยมศึกษาจนถึงนักศึกษาในมหาวิทยาลัย และ บุคคลทั่วไปที่สนใจในการพัฒนาซอฟต์แวร์และเทคโนโลยีคอมพิวเตอร์ ซึ่งในปัจจุบันนี้ถือว่ามีความสำคัญกับทุกสาขาอาชีพ และ เข้ามาเกี่ยวข้องกับทุกๆอย่างในชีวิตของเรา
ความสำเร็จของเรา คือ "การที่ได้เห็นคนไทยหันมาพัฒนาซอฟต์แวร์เพื่อโลก ที่ดีขึ้น"
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dns port 在 矽谷牛的耕田筆記 Facebook 的最佳解答

矽谷牛的耕田筆記 By 矽谷牛的耕田筆記

2020-12-09 09:00:10 有 47 人按讚
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本篇文章要來探討 Kubernetes/Docker 一些關於 connection timeout 的事情，文章非常長，這邊幫大家重點整理

1. 跟我之前分享的 DNS timeout 問題類似，都會踩到 Kernel 的 race condition，都是 __ip_conntrack_confirm 這個人丟掉大家封包的
2. 本文著重於怎麼發現這個問題，如何減緩這個問題。對於喜歡研究細節的人值得一看。
3. 2017年底作者團隊開始將服務遷移到 Kubernetes (v1.8), Flannel(1.9.0)，開始發現團隊中基於 Scala 的應用程式出現封包 timeout 的問題，這導致部分請求回應都延遲1-3秒
4. 決定認真調查網路問題，經由研究與錄製封包後發現 TCP 重送(SYN)的現象，該現象導致第一個封包會特別慢
5. 接下來要縮小範圍，使用環境中的一個VM作為基底，上面安裝 docker，開始觀察相關的網路流量與封包，發現可以重製這個行為，第一個封包從容器出去後，宿主機上面的真實網卡卻看不到，直到下次第二個封包就可以。藉由這個行為他們判斷，問題出在VM上，跟底層其餘硬體架構無關，藉此縮小問題範圍。
6. 介紹 iptalbes + SNAT + conntrack
7. 問題發生在 Kernel 裡面針對 SNAT 去選擇對外 source IP 時會出錯，因為(1)挑選一個適當的 source port, (2)將該紀錄寫到 conntrack 這兩個步驟中間會有落差，因此如果兩個封包同時進入(1)，選到一樣的結果，後續要跑(2)就會有一個人寫不進去，導致封包被丟棄
8. 一種解決方法是告訴 kernel 請隨機幫我挑選對外的 source port, 這樣就算大家同時執行(1)，有很大的機會會挑到不同的 source port，藉此減少衝突的機會。
9. iptables 執行 --masquerate 的時候可以下 --random-fully 這個參數
10. 團隊當時客製化 Flannel 來解決這個問題

註: 對 SNAT 有興趣瞭解的可以參考我之前撰寫的 SNAT Kernel 原始碼閱讀文章
https://www.hwchiu.com/iptables-masquerade.html
https://www.hwchiu.com/iptables-masquerade-handson.html

https://tech.xing.com/a-reason-for-unexplained-connection-timeouts-on-kubernetes-docker-abd041cf7e02

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目前工作內容主要以 DevOps 為主，本身是微軟 Cloud and Datacenter Management MVP，閒暇之餘會透過文章記錄所學，記錄於 https://www.hwchiu.com. 喜歡參加社群活動來學習不同的經驗，藉此增廣見聞 目前主要參加的社群是 CNTUG，偶而會參加線上 Meetup ，透過網路的方式分享一些心得，並且錄影分享於 Youtube 上
工作與閒暇之餘的學習筆記，紀錄各式各樣的科技文章，同時分享自身部落格文章，線上社群演講以及線上課程資訊
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dns port 在 傳說中的挨踢部門 Mobileai Facebook 的精選貼文

傳說中的挨踢部門 Mobileai By 傳說中的挨踢部門 Mobileai

2020-03-24 13:52:50 有 14 人按讚
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手機真的是越來越強大很多事情現在都能透過手機來處理，今天來跟大家介紹一個相當實用的網路分析 APP讓您在 Android 手機上也可透過工具來檢測目前對外IP、網路資訊、掃描WiFi 訊號強度、Ping、Route、Port、Whois、DNS，由其當您居家隔離在家VPN用手機連回公司處理事情連不上的時候，透過這工具就可以讓資訊人員快速除錯…

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分享各種 旅遊、美食、3C流行資訊、PDA相關應用 科技來自於人性，人性來?
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dns port 在 hokoonho Youtube 的最佳解答

hokoonho By hokoonho

2019-02-17 22:03:55 有 24,686 人看過 有 382 人喜歡
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Wifi 速度測試, 使用 Mate 20 Pro 作測試

MW5 實測速度 (10次平均值)
upload: 253 Mbps
download: 398 Mbps
latency: 10 ms

MW6 實測速度 (10次平均值)
upload: 256 Mbps
download: 412 Mbps
latency: 10 ms

可設定項目:
Wifi SSID 和密碼
訪客網絡
訪客網絡時限
家長控制
上網設定 PPPoE, DHCP, Fixed IP, Bridge
QoS
快速漫遊 (使手機快速連接最佳Wifi節點)
高待機模式 (家中裝置多時可啟動改善效能)
智能設備助手 (找尋只支援2.4GHz Wifi 智能家居裝置, 類似相容模式)
Port forwarding (set server 或使用舊式軟件連網時會用)
UPnP
DHCP 設定 (能設定網內的IP Address 範圍)
DNS 設定 (可自訂 主 和 次要 DNS)
軟件升級 (可透過手機 App 進行版本檢查和升級)
帳號授權 (可設定多於一位的管理員)

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hokoonho

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大家好，我是一位業餘的 YouTuber。 本頻道旨在個人分享，內容主要是科技和生活相關。 不要認為我是經營一個科技頻道，其實只是因為科技是我的興趣，所以多拍科技相關影片。 這是一個不收費，不替產品賣廣告的頻道，我是自費買東西來開箱評測，拍每一段影片也有支出。 Hello everyone, I am a holiday YouTuber, I would like to share with all of you. IT and Technology stuff are my favorite. Since I am in Hong Kong, most of my videos are in Cantonese, and sometimes English subtitles will be added. Especially for those video with both Chinese and English name. However, you still be able to watch my video without understanding Cantonese, for example, I always unboxing smartphones and you don't need to understand what I said;) and this is not a profitable YouTube channel, don't expect too much. Enjoy ;)
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dns port 在 綝雪SnowLin Youtube 的最佳貼文

綝雪SnowLin By 綝雪SnowLin

2018-02-15 09:41:49 有 54,101 人看過 有 202 人喜歡
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要設定的連接埠
TCP Port 80
TCP Port 443

UDP Port 6672
UDP Port 61455
UDP Port 61456
UDP Port 61457
UDP Port 61458


GTA5：1 42 連線問題 解決方式（ㄧ） DNS設定教學
https://youtu.be/Q4OfxUp3bdM

GTA5 連線問題 解決方式（二） VPN設定教學
https://youtu.be/rzDKUsfPN1g

GTA5 連線問題 解決方式（四） 下載中斷的解決方式
https://youtu.be/LbVl7rkFkoI

GTA5 連線問題 解決方式（五） 其他VPN處理方式
https://youtu.be/4VXLNaYtk78

有想看什麼測試的可以在底下留言
可以的話我會盡量拍給大家


Twitch：https://www.twitch.tv/snowlin

YouTube：https://www.youtube.com/c/SnowLin

Facebook：https://www.facebook.com/SnowLin0427/

微博：http://weibo.com/SnowLin0427

贊助連結
PayPal：https://streamlabs.com/snowlin

台灣：https://payment.ecpay.com.tw/Broadcaster/Donate/F97F274C96AB672CFA7DCF0BF42D002D

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YouTuber兼遊戲實況主播 直播平台：YouTube 在直播的遊戲有GTA5、黑色沙漠、戰艦世界、戰機世界等等... 直播時間每天晚上22：00後（大約都22：30開台） Instagram：https://www.instagram.com/snowlin0427/ YouTube：https://www.youtube.com/c/SnowLin Facebook：https://www.facebook.com/SnowLin0427/ Podcast：https://player.soundon.fm/p/SnowLin0427 Twitch：https://www.twitch.tv/snowlin 廠商合作或工商請私訊粉專 贊助連結 PayPal：https://streamlabs.com/snowlin 台灣：https://payment.ecpay.com.tw/Broadcaster/Donate/F97F274C96AB672CFA7DCF0BF42D002D
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dns port 在 Adam Lobo TV Youtube 的精選貼文

Adam Lobo TV By Adam Lobo TV

2017-09-21 22:29:34 有 2,283 人看過 有 32 人喜歡
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Starting a new series on Adam Lobo TV where i feature cool tech / gaming rooms!

1) Table Setup: Custom Wooden Table

2) PC on the “Right”; (this is MAX-PC)

Processor: Intel(R) Core(TM) i5-4670 CPU @ 3.40GHZ (O’clocked to 3.80GHZ)
Memory: RAM 16GB
Operating System: Microsoft Windows 7 Professional Edition SP1 64-bit

Audio Card / Device
Audio 1: Bose Companion http://amzn.to/2wFM0Qo
Audio 2: Asus Xonar HDAV 1.3 Audio Device (surround sound)

PCI Graphic Cards
Video Card 1: Nvidia GeForce GTX 960 http://amzn.to/2wvjgia
Video Card 2: Nvidia GeForce GTX 960       *both cards are on SLI bridge*

Internal Storage
Drive 1: 465.8GB
Drive 2: 931.5GBDrive 3: 111.8GB
 
a) Razer Ouroboros Gaming Mouse - http://amzn.to/2xuX5ru


b) Razer Firefly Mousepad http://amzn.to/2ybZJ2s

3) TV above; (connected to MAX-PC)

ExplanationThis is a very old 32” LCD TV with only 2 HDMI ports. No USB port available. Not a Smart-TV either. Made it smart using “Google Chromecast”

4) Other Monitors on the ‘Right’ and ‘Left’; (connected to MAX-SERV)

Monitor Left:    Samsung S20A300 20 inch Widescreen LED MonitorMonitor Right: Samsung S20A300 20 inch Widescreen LED Monitor

5) Touch Screen Monitor (connected to MAX-PC)
Model: HP 2209t

6) Keyboards; (connected to MAX-PC & MAX-SERV)
Specificationsa)
MAX-SERV – Gamdias Ares v2 Essential Keyboard
MAX-PC – Microsoft Sidewinder X6 Keyboard

7) TabletModel: Samsung Galaxy Tab A 7.0 T285 (Black)

8) Samsung S6 Edge on Qi ChargerModel: Samsung S6 Edge  Qi Wireless Charger

9) Bose Companion Speaker (connected to MAX-PC)Model: Bose ® Companion 5 Multimedia Speaker System http://amzn.to/2wFM0Qo
  
10) Razor ‘Seiren’ Microphone (connected to MAX-PC) http://amzn.to/2jIfFXY

11) Sony PSP (US region)Model: PlayStation Portable 3000 Core Pack System - Piano Black
 
12) D-Link RouterModel: D-Link AC5300 Ultra Wi-Fi Router http://amzn.to/2ycb6rm
 
13) Server Rack(s);
Model: IKEA - LENNART Drawer unit, dark gray

a) Network SwitchSpecificationsModel: 
D-Link 24-Port Rack Mountable Gigabit Switch DGS-1024D
http://amzn.to/2wvAKLa

b) 16 TB StorageModel: 
D-Link 16TB Share Center+ DNS-345 4 Bay Network Storage Enclosure with Seagate NAS DrivesModel: 
Seagate Personal Cloud 8 TB 2-bay (2 x 4 TB) Home Media Storage, NAS - Black http://amzn.to/2wvXmeD

c) Philips Hue Bridge(Gen-1) http://amzn.to/2jHlLHX

d) Apple Airport ExpressModel: Apple AirPort Express Base Statione) Telco: Telekom Modem & Router (UniFi 100Mbps plan)
 
14) Fan Monitor ScreenSpecificationsModel: Sentry LXE Touch Screen External Fan Controller

15) Amplifier (unknown US brand, purchased locally)Model: Infinity Home Theater System

16) Surround Sound Speakers (connected to MAX-PC / MAX-SERV / PS3 / PS4

17) Sony PlayStation(s)
PS3 & PS4Model: Sony PlayStation 3 PS3 500GB Super Slim Console (Black)Model: Sony PS4 Slim / PlayStation Slim 1TB (Black)

18) CPU Server (this is MAX-SERV)
Specifications
Processor: Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz (O’clocked to 3.50GHz)
Memory: RAM 16GBOperating System: Microsoft Windows 7 Professional Edition SP1 32-bit

Audio Card / DeviceRealtek High Definition AudioVideo CardsIntel HD Graphics (onboard)

Internal Storage
Drive 1: 1.8TB
Drive 2: 487.5GBDrive 3: 445.9GBDrive 4: 350MB

19) Amazon Echo Dot (2nd Gen)Model: Echo Dot 2nd Generation
http://amzn.to/2wwaTmt

20) RM ProModel: Broadlink RM PRO Universal Intelligent Remote Controller Smart Home Automation (WIFI+IR)
http://amzn.to/2wFkm5Z

21) Wireless PrinterModel: HP Deskjet Ink Advantage 5525 e-All-in-One Printer CZ282B

22) Go Pro (Hero4-Black)
Model: GoPro HERO 4 Black Edition Waterproof Sports & Action Camera
http://amzn.to/2xPePPf

23) Bluetooth SpeakerModel: Photive Hydra Wireless Bluetooth Speaker
http://amzn.to/2xvLV5V

24) Drones & RC Off-road dragster, Tank, 4WD-Buggy, HelicopterModel:  DJI Phantom 3 Advanced http://amzn.to/2wERpad
Model: DJI Phantom 2 Vision

25) UPS Power Supply (APC) – hidden behind the deskModel: APC Br1200Gi 1200Va Power-Saving Back-Ups Pro

My YouTube Gear 2017: http://bit.ly/2so8Hrr
My Desk Setup 2016:
http://bit.ly/2kn80us

Instagram: https://www.instagram.com/adamlob0/
Twitter: https://twitter.com/adam_lobo
Facebook: www.fb.com/adamlobotv
Snapchat: @adamlob0
Adam Lobo TV: www.adamlobo.tv
Adam Lobo Official Profile Website: www.adamlobo.com
Dragon Red Band Official Website: www.dragonred.com
Fist Of Pain Band Facebook Page: https://www.facebook.com/fistofbandmalaysia/

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Adam Lobo TV

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Hey you! Thanks for checking out Adam Lobo TV on YouTube! My name is Adam Lobo, I'm a Tech YouTuber from Kuala Lumpur, Malaysia, who creates high-quality tech reviews on YouTube, Instagram & Facebook and I am currently the only Malaysian Tech YouTuber who produces 6K Resolution content. My passion is to help everyone to make a purchase decision with all the tech items I get my hands with where you'll find weekly smartphones, tablets, audio, smart home and other cool tech related videos as well. I produce these videos at least twice a week so do consider subscribing to my channel Contact Me: https://www.adamlobo.tv
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社群媒體上有些相關的討論：

dns port 在 COMODO 防火牆開通設定DNS PORT - Mobile01 的推薦與評價

公司最近架設了一個DNS SERVER，作業系統為WIN2003 SERVER，目前是將實體IP設定進了主機我選擇了COMODO為 ... DNS要開UDP 53 port,有必要DNS資料庫同步的話把TCP53也開. ... <看更多>

dns port 在 CoreDNS is a DNS server that chains plugins - GitHub 的推薦與評價

Sometimes port number 53 is occupied by system processes. In that case you can start the CoreDNS server while modifying the Corefile as given below so that the ... ... <看更多>

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#1. DNS查詢是利用UDP 53 port，何時使用TCP 53 port？

此為DNS Server間的資料轉送，即指Master DNS(Primary DNS)與Slave DNS(Secondary DNS)間，進行資料轉換時會使用TCP 53 Port。

#2. 鳥哥的Linux 私房菜-- DNS Server

所以啟動DNS 的daemon (就是named 啦) 時，會同時啟動tcp 及udp 的port 53 喔！所以，記得防火牆也要同時放行tcp, udp port 53 呢！

#3. dns server的53 port何謂大量? - iT 邦幫忙

最近才發現公司的dns每天都會攻擊hinet的dns. 攻擊名稱為攻擊次數. G_knuckleheadskc.com 2313次. H_tx.nadersamar2.org 2300次這是一天的量，請問這正常嗎?

#4. Is DNS TCP or UDP port 53? - Infoblox

The answer is DNS is mostly UDP Port 53, but as time progresses, DNS will rely on TCP Port 53 more heavily. DNS has always been designed to use both UDP and ...

#5. 請問DNS可否轉port呢?

DNS 只管Domain Name，不管Port的，你要去變更IIS設定。 2011年11月10日上午08:00. 回覆. |. 引述.

#6. Understanding DNS Port 53 with Examples - howtouselinux

DNS uses both TCP and UDP port 53 ... Most of the time, DNS happens over UDP port 53. It's lightweight and faster than TCP. ... Check this post to ...

#7. TCP/UDP埠列表- 維基百科，自由的百科全書

埠 描述 狀態 7/TCP,UDP Echo（回顯）協定 官方 9/UDP 拋棄協定 官方 9/TCP,UDP 網路喚醒 非官方

#8. 常用TCP Port作用(各種Port介紹) - 痞客邦

53Port：53Port為DNS（Domain Name Server，功能變數名稱伺服器）伺服器所開放，主要用於功能變數名稱解析，DNS服務在NT系統中使用的最為廣泛。

#9. 請教如何設定DNS至80 port以外的port活動- PCZONE 討論區

請教如何設定DNS至80 port以外的port活動. 各位好小弟有一個domain name叫做chan.idv.tw dns server也為自己架設目前面對到一個問題我知道如果要跑不同的website

#10. DNS Port Number - What is Domain Name System - Networks ...

The most frequently used port for DNS is UDP 53. This is used when a client ...

#11. DNS Port - How to allow DNS through Firewall

To get a specific Domain Name and DNS port is used which interacts with the client device and communicates it to the DNS server, where the most frequently used ...

#12. Setting a non-standard port for a DNS server - Keenetic

It is possible to specify a non-standard port number for the DNS server in the command-line interface (by default, the Domain Name System...

#13. 12.4.3 TCP/IP 連線和DNS 查詢支援

port. 指定SMTP 連線的預設連接埠號。標準連接埠是25。 interfaceaddress. 連結至特定的TCP/IP 介面位址。 快取關鍵字. 指定如何快取連線資訊. cacheeverything.

#14. 政府機關DNS主機安全設定 - GSN - nat.gov.tw

因開放式的DNS不限來源的特性，遭DNS欺騙成功的 ... DNS Server間的查詢模式由Client端或是DNS Server上所發出去問， ... 若限制TCP port 53對權威DNS的備援的影響.

#15. traceoptions (DNS, Port, and TFTP Packet Forwarding)

Configure tracing operations for BOOTP, DNS, TFTP, or custom UDP port packet forwarding.

#16. COMODO 防火牆開通設定DNS PORT - Mobile01

公司最近架設了一個DNS SERVER，作業系統為WIN2003 SERVER，目前是將實體IP設定進了主機我選擇了COMODO為 ... DNS要開UDP 53 port,有必要DNS資料庫同步的話把TCP53也開.

#17. [Chapter 8] 8.10 Domain Name System (DNS)

A DNS server uses well-known port 53 for all its UDP activities and as its server port for TCP. It uses a random port above 1023 for TCP requests.

#18. ‎在App Store 上的「iNetTools - Ping,DNS,Port Scan」

iNetTools is a suite of network diagnose tools on iPhone and iPad. It provides essential tools such as Ping, DNS Lookup, Trace Route, Port Scan, Whois, ...

#19. 什麼是DNS 快取記憶體中毒？ | DNS 詐騙 - Cloudflare

目標DNS 解析程式不快取哪些DNS 查詢，以便使解析程式查詢權威名稱伺服器; What port* the DNS resolver is using – they used to use the same port for every query, ...

#20. DNS資訊安全防護的最後一里路 - 創泓科技

DoT只使用TCP port 853，而DoH使用HTTPS流量，與443使用的同一port。因此，很難將DoH與其他HTTPS流量區分開。 長時間來，我們一直建議客戶阻擋內部IP與Internet之間的 ...

#21. How to open DNS port 53 using ufw on Ubuntu/Debian Linux

This page shows how to open DNS port 53 using ufw firewall on a Debian or Ubuntu Linux 16.04/18.4 LTS server to accept DNS queries from the ...

#22. TCPIP，FQDN，Domain，Port，開啟的應用程式網路工具介紹

觀察DNS，TCPIP，FQDN，Domain，Port，開啟的應用程式網路工具介紹介紹四個工具 DNSQuerySniffer SmartSniff TCPLogView TCPView 電腦網路觀察封包的活動當然如果你 ...

#23. 如何避免DNS主機被當成攻擊跳板 - 計中首頁

攻擊者(Attacker or Zombie)將DNS查詢封包中的Source IP偽造成Victim IP，向設定不良之Open DNS ... 觀察主機是否有開啟UDP 53 port(請參考圖1)

#24. nslookup 使用說明

port =X - set port number to send query on ... 在查詢時有時會出現Non-authoritative answer, 代表這個答案是由local DNS 的cache 中直接讀出來的, 而不是local DNS ...

#25. Ping Tool - DNS, Port Scanner - Google Play 應用程式

ManageEngine Ping Tool offers network monitoring capability from your android mobile. You can get the complete view of what is happening ...

#26. Host DNS entry with port numbers - Discussions - Sophos (XG ...

dns entries do not incldue port. DNS are used to resolve names to IP, ip to names, CNAME, MX, txt, etc. If you want to reach the Sophos XG using name, ...

#27. General Router Port Forward | Tutorials | Dynamic DNS Service

Port forwarding opens certain ports on your network, usually blocked from access by your router to the general Internet. Open ports are used to allow a ...

#28. DNS-over-TLS | Public DNS | Google Developers

If the client cannot establish a secure connection on port 853, it falls back to communicating with the DNS server on the standard DNS port 53 over UDP or TCP ...

#29. Can DNS Point a Domain Name to a Specific Port? - Huawei ...

DNS cannot point a domain name to an IP address with a specific port (Server IP address:Port number).

#30. DNS (Domain Name System) uses Port 53 TCP/UDP ... - Skillset

The DNS uses TCP Port 53 for zone transfers, for maintaining coherence between the DNS database and the server. The UDP protocol is used when a client sends ...

#31. A review of DNS over port 80/443 - IETF Tools

A review of DNS over port 80/443 Beijing Internet Institute 2/F, Building 5, No.58 Jinghai Road, BDA Beijing 100176 CN [email protected] ...

#32. DNS伺服器建置 - 點部落

DNS 緩存伺服器建置. 1.1 安裝bind # yum install bind -y. 1.2 設定/etc/named.conf 13 listen-on port 53 { any; }; #監聽所有ipv4 14 listen-on-v6 ...

#33. Minimum Packet Access Control List for DNS Servers

Used as Source port for DNS queries, transfers and notification. icmp/packet-to-big: Used for TCP Path MTU Discovery. Sent by any Gateway/Router if packet ...

#34. 如何在Synology NAS 上建立DNS 伺服器？

DNS 是什麼？ DNS (網域名稱系統，Domain Name System) 就像一本網路通訊錄。它將有具有語意的網域名稱對應到IP 位址，讓使用者能夠暢遊網路，輕鬆存 ...

#35. 重新認識DoT/DoH、DNSSEC的定位與原理

DNS （Domain Name System）自1980年代被發明以來，一直扮演著網際網路中不可 ... 就構成所謂「DoT（DNS over TLS）」，協定代表port號是853（TCP）。

#36. DNS - NetApp Support

The Domain Name System (DNS) uses UDP port 53 and TCP port 53. Your storage system does not typically listen on these ports because it does not run a domain ...

#37. Bind9 not responding to outside dns queries while port 53 is ...

Clearly someone is blocking your DNS UDP port. The fact the port is open is orthogonal to the fact it may be blocked: either at your host by firewall or ...

#38. Port Authority, for Internet Port 53 - GRC

Name: domain. Purpose: Domain Name Server. Description: "DNS" is the glue that translates human-readable domain and machine names like "grc.com" or ...

#39. Map DNS entry to specific port - Stack Overflow

DNS has nothing to do with the TCP port. DNS is there to resolv names (e.g. mysite.sample) into IP addresses - kind of like a phone book.

#40. IPv6 DNS - Bind安裝 - 小麥個人網

在Linux上最常用的dns服務套件就是bind，目前應該bind9.9. ... listen-on port 53 { 127.0.0.1; }; //將127.0.0.1改為主機ipv4位置或是直接改為any即 ...

#41. allow DNS (port 53) inbound - Firewall - Ubiquiti Community

Firewall - allow DNS (port 53) inbound ... Hello community! Scenario: External DNS for master domain, but I want to allow inbound DNS for a subdomain by NS record ...

#42. What does it mean when the DNS port is open on my computer?

It means either your computer is running a DNS server (or proxy or it has been compromised and someone is using it as a mechanism to ...

#43. Open Port Checker Tool - Port Tester

Scans the most common ports, check port forwarding on your router. ... Port 53 for Domain Name System (DNS); Port 80 for Hypertext Transfer Protocol (HTTP) ...

#44. What Is DNS Server Or Protocol Port Number? - POFTUT

One of the used DNS port is TCP Port 53. TCP provides stability over the DNS resolutions process. With TCP 53 there will be no data loss over ...

#45. How do I configure my firewall for DNS?

A DNS server listens for requests on port 53 (both UDP and TCP). So all DNS requests are sent to port 53, usually from an application port (>1023). You can ...

#46. Service | Kubernetes

Kubernetes gives Pods their own IP addresses and a single DNS name for ... You can manually map the Service to the network address and port ...

#47. DNS偵錯工具

在完成DNS的安裝及設定後，用戶端即可向伺服器提出名稱解析的要求。 ... [ @server ] [ -b address ] [ -c class ] [ -f file-name ] [ -k filename ] [ -p port# ] [ -t ...

#48. DNS Server

確定防火牆是否開啟（DNS port 為 53）. 確定是否開機啟動 DNS（chkconfig named on）. 測試 DNS（名稱查詢工具）. nslookup [主機名稱 or IP] [name server].

#49. DNS欺騙 - MBA智库百科

DNS 欺騙是指攻擊者冒充功能變數名稱伺服器的一種欺騙行為。攻擊者通過入侵DNS伺服器、控制路由器等方法 ... Destination port : 53 (DNS port). Data : www.baidu.com.

#50. Windows DNS.EXE 大量開啟UDP PORT - No Money No Honey

最近更新完一次windows update, 發現有台server 在重新開機後, 居然有一堆udp port 開啟著, 利用TCPView 來找出看是哪個process 造成, 原來是dns.exe (windows 內建 ...

#51. Redirecting Client DNS Requests | pfSense Documentation

Invert Match checked, LAN Address. Destination Port Range. DNS (53). Redirect Target IP. 127.0.0.1. Redirect Target Port.

#52. CoreDNS is a DNS server that chains plugins - GitHub

Sometimes port number 53 is occupied by system processes. In that case you can start the CoreDNS server while modifying the Corefile as given below so that the ...

#53. Steps to change default DNS and RNDS ports for EGO ... - IBM

53 and 953 seems like default ports for $LSF_SERVERDIR /named which is ServiceDirector of LSF EGO. Customer would like to change the port value 53 to other ...

#54. DNS, Ports, and Protocols Requirements When Using Horizon ...

When you are using the Horizon Cloud Connector virtual appliance with your Horizon pod, you must configure your firewalls to allow the ...

#55. Addresses and Ports (DNS and BIND, 4th Edition)

10.15.1. Configuring the IPv4 Transport. You can specify which network interface your BIND 8 or BIND 9 name server listens on for queries using the listen-on ...

#56. Allow Both TCP and UDP Port 53 to Your DNS Servers

Security practitioners for decades have advised people to limit DNS queries against their DNS servers to only use UDP port 53.

#57. Unrestricted DNS Access | Trend Micro

Ensure no AWS EC2 security group allows unrestricted inbound access to TCP and UDP port 53 (DNS).

#58. Creating a DNS Record with a port number?? - Spiceworks ...

Solution: In case you didn't catch on - DNS doesn't provide port numbers - you have to have a server re-direct your requests from a standard port (port 80 ...

#59. [外部網路] 如何設定網際網路連線| 官方支援 - ASUS

將您的網路供應商(ISP) 提供的網路線連接到路由器的WAN Port,上方有個地球 ... 自動接上DNS伺服器: 允許此路由器自動從ISP中獲取DNS的IP位址。

#60. Change the DNS Forwarder DoT port

You can use outbound TCP port 443 or 853 for DNS-over-TLS (DoT) connections. By default, the DoT port is 443. Complete this procedure to change the port.

#61. OpenStack Docs: DNS integration

Since the DNS Integration extension is a subset of dns_domain for ports ... The name assigned to the port by the Networking service internal DNS is now ...

#62. 168.95.1.1 如果有開PORT 設定NAT 啟動UPnP 映射類型

設定DNS：168.95.1.1. 如果有開PORT. 設定NAT. 啟動UPnP. 映射類型：手動. 把外部埠號設定與內部埠號相同. Page 2. 啟動DDNS. 區域：ASIA. 國家：CHINA 或ASIA OTHER.

#63. Configuring DNS proxy caching - Forcepoint

Enable the DNS proxy option and specify the port that Content Gateway will use for DNS proxy traffic. *. Configure your layer 4 switch or WCCP router to send ...

#64. r/DFO - [Guide] Improve Connectivity with Port Forwarding and ...

Check that off and type in the two google DNS server IP addresses (listed above). Click OK and you are good to go! Port Forwarding. Setting up ...

#65. Dynamic DNS Service with Port Redirection - EnGenius ...

ABSTRACT—The dynamic DNS service with port redirection technology will direct the connection to its own dynamic DNS server, and then determine the IP ...

#66. DNS攻擊手法

DNS 是Domain Name Service 的縮寫，一般預設的DNS 使用的網路Port 是「53 」，他的功能是用來翻譯Domain Name ，可以將Domain Name 轉成IP Address，例如 ...

#67. 10 most used Nslookup commands - ClouDNS Blog

You can define your query for a specific DNS record, to identify the domain, the port in use, and timeout in seconds. For better security, we ...

#68. How to access DNS server on non-standard port on macOS?

[Edited]. You cannot. Most all DNS clients expect that the DNS server will be listening on port 53. All DNS servers run on port 53, period, ...

#69. DNS records and ports settings for e-mail - Active24

DNS records and ports settings for e-mail ... If you are not using our nameservers, the automatic settings on domain can't be started. Please ask ...

#70. Getting Started with Dynamic DNS | Dyn Help Center

2. Set Up Your Router for External Traffic (Port Forwarding) · 1. Log into your router by typing the router's IP address into the web browser of a computer ...

#71. 馬克: [舊連結] Windows 網路相關IP、DNS、Port ...等，使用教學

[舊連結] Windows 網路相關IP、DNS、Port ...等，使用教學， ... Hinet 中華電信之合勤數據機ZYXEL P880 2T2R 内的Port 端口映射設置教學. IP地址查詢

#72. Managing the BIND Server | Creating a DNS Service on the ...

The configuration settings are stored at /etc/rndc.conf. Make sure that the firewall is open on port 953. Using the command line on the BIND ...

#73. DNS主要設定檔named.conf介紹

directory "/var/named"; //DNS資料預設放置的位置 ... query-source-v6 port 53; //設定ipv6查詢來源的port. listen-on port 53 { any; }; ...

#74. How to configure firewall for DNS server - Tutorial - UpCloud

The basic firewall rule for allowing DNS queries is to permit inbound UDP and TCP traffic from port 53 to any port from the DNS IP addresses ...

#75. Configuring network devices, DNS servers, and ports using ...

You can configure DNS servers using file-based configuration. ... DNS port number, is TCP, timeout, poll interval configuration settings ...

#76. 高雄市政府教育局資訊教育中心

listen-on port 53 { 127.0.0.1; any; }; ... forwarders { // 這裡放入最近的上層DNS主機IPv4/IPv6 IP ... 記得向上層DNS管理單位徵詢，同意後才可實行!

#77. Source Port Randomization for Caching DNS Servers ...

Source Port Randomization for Caching DNS Servers Requested, yet again. Email. Hello, this is Moto Kawasaki, a new member of Global Coordination ...

#78. DNS Edge ports

Source IP Destination IP Port Protocol Description * 53 UDP + TCP DNS inbound and outbound 80 TCP Diagnostics end point ICMP Pings 67 UDP Used for DHCP ...

#79. Synology Docker 架設AdGuard Home DNS 伺服器 - 坂本 ...

然後連外Port，因為Synology 被佔用了80/443 Port，所以要改一下自定Port 避開它，但儘量不要自動設定可以了。 adguard-docker-10. 變數部分，一定要設 ...

#80. Troubleshoot DNS resolution issues with Route 53 Resolver ...

I'm unable to resolve DNS records using an inbound or outbound ... on TCP and UDP port 53 from your on-premises DNS server IP address.

#81. DNS Protocol - NS1

DNS uses the User Datagram Protocol (UDP) on port 53 to serve DNS queries. UDP is preferred because it is fast and has low overhead. A DNS query is a single ...

#82. Whois, DNS lookup & Port Check - TestMy.net

Whois, DNS lookup & Port Check. Use this tool to query detailed IP address information such as ISP, City, State, Country or related TestMy.net ID.

#83. Flow Analysis Using Filters – Exploring DNS Communication

9 List of flows). If we look at the List of TCP and UDP port numbers, we can see that the Domain Name System (DNS) uses port number 53.

#84. The Windows 2012 DNS Server must be configured to prohibit ...

Messages are sent over UDP and DNS servers bind to UDP port 53. When the message length exceeds the default message size for a User Datagram ...

#85. Allow port 53 for a DNS server - Ask Ubuntu

Could you let port 53 to go out anywhere? Shell command: sudo ufw allow out 53.

#86. dns-flood port

Use dns-flood port to specify the global ports to be protected against DNS flood attacks. Use undo dns-flood port to restore the default.

#87. port lockdown on GTM - do I have to include DNS ports?

I'd like to create custom port lockdown restrictions for a GTM to allow all hosts ... do I need to explicitly whitelist DNS connections?

#88. Forward DNS for Consul Service Discovery - HashiCorp Learn

To complete this tutorial, you will need a running Consul agent. Consul should be running with default settings and serving DNS on port 8600. By default, Consul ...

#89. docker內網搭建dns使用域名存取替代ip:port的操作 - IT145.com

docker內網搭建dns使用域名存取替代ip:port的操作. 2020-11-21 18:00:35. 比如我內網有個jenkins，我如果要存取它我得牢牢記住它的ip和埠，一個服務我還能記住，多個 ...

#90. DNS Port Forwarding - Redmine

DNS Port Forwarding. Added by John Bentley over 9 years ago. Hello all,. First, we use all mac servers here, and we have a brand new mac mini server set up ...

#91. tcp on port 53 for dns - security/firewall questions - cPanel ...

Setting up a new server... I was checking dns using http://www.dnsstuff.com/ and noticed that my nameserver do not respond to tcp.

#92. IPv6 DNS運作與Windows IPv6 server建置介紹

大部份的DNS server 都可以接受Recursive 和Iterative 兩. 種查詢方式；但考量負載問題，Root name ... 系統問題(如開啟中的檔案太多, socket port 53 開不啟來).

#93. Authoritative Server Settings - PowerDNS Documentation

Allow 8 bit DNS queries. ... Allow DNS updates from these IP ranges. ... You may specify an alternate port by appending :port, ex: 127.0.0.1:2004.

#94. DNS Tunneling: how DNS can be (ab)used by malicious actors

DNS uses Port 53 which is nearly always open on systems, firewalls, and clients to transmit DNS queries. Rather than the more familiar ...

#95. DNS privacy in new Android 9 - Internet Society

This setup was useful if your local DNS resolver was Unbound or Stubby, ... DNS port 53 and as well as port 853 for DNS-over-TLS queries.

#96. 搞懂IP、FQDN、DNS、Name Server 鼠年全馬鐵人挑戰#05

所以當我們在做網路設定時，必須將DNS 伺服器的IP 地址根電腦說，這樣電腦 ... 特定服務的伺服器的位置，如主機（hostname），埠（port number）等。

#97. DNS設定常見問題 - 網路中文

我已經向網路公司申請虛擬主機(Web hosting)，或自己架設了DNS主機，該如何 ... 防火牆連線未開啟，請檢查防火牆連線udp 53 port和tcp 80 port是否已開啟並未阻擋連線 ...

#98. What's up with TCP 853 (DNS over TLS)? - SANS Internet ...

For those of you who aren't aware, tcp port 853 is assigned to DNS over TLS as defined in RFC 7858. DNS over TLS (or DoT) was defined in ...

#99. What is the difference between DNS over TLS ... - The SSL Store

While DNS over HTTPS requests can hide in the rest of the encrypted traffic, DNS over TLS requests all use a distinct port where anyone at the network level can ...