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Course 6: IP SERVICES - DHCP, DNS & NAT   

PRICE: $0.00

What you will do

  • Learn how devices on a network can obtain IP Address configuration automatically using DHCP.
  • Understand the steps involved in DHCP and the acronym DORA.
  • Learn about DHCP Exclusions, Reservations and Relays.
  • Configure DHCP services on servers and Cisco routers.
  • Understand how the Domain Name System works.
  • Understand how Network Address Translation is used to allow devices on a private network to communicate with devices on the public internet.

What you will need

  • An understanding of unicast and broadcast traffic and how they are handled by a switch.
  • Knowledge of the Address Resolution Protocol and ICMP.
  • An understanding of default gateways and basic routing.
  • Knowledge of how VLANs and trunk links work.

After taking this course you will

  • have a thorough understanding of the DHCP protocol and DHCP messages;
  • be able to configure DHCP scopes, exclusions and reservations on servers and network devices;
  • understand DHCP relays and the use of "ip helpers";
  • understand the purpose of DNS and how it works;
  • understand and configure Network Address Translation on Cisco routers.
Comments & Discussion
Ali1 month ago
Is there any tentative date for courses 7 & 8?
By the way brilliant endeavour.
Connected Dots Online1 month ago
Thanks for the feedback, Ali. There should be more content available in 3-4 months from now.
Ali1 month ago
Thanks a lot for informing.
Connected Dots Online2 months ago
Some updates were made earlier today. If you encounter any errors or problems with any of the lessons or exercises, please post a note here.
Connected Dots Online2 months ago
The recent update introduced an error in the lesson:
6.1 Introduction to DNS - (Domain Name System)
(The lesson would get stuck after the first couple of screens.)
This has now been fixed.
aya3 months ago
amazing platform, I'm grateful , but can you add a cyber security course, it would be beneficial. thanks in advance
Bibek4 months ago
Could make tutorial for the enterprise network design?
shakoor4 months ago
amazing looking forward for more please don't stop keep this beautiful work going and would love to hear which course will you upload next and what courses are you working on, your way of teaching is incredible i don't have words to express my gratitude to you for such a beautiful platform
Connected Dots Online4 months ago
Thank you for the feedback, Shakoor. There should be some more content uploaded in a couple of months.
christian7 months ago
hi connected dots, I was reading the DORA process in the dhcp process during the assignment of ip addresses .Will it be true to say that if you connect someone to a network via a hotspot then then the device providing the hotspot becomes a dhcp server and falls within the components of a dhcp please elaborate your points on this. Secondly is it true to say that configuring a network device in providing ip address makes that device a dhcp server or are there specific machines for these role please elaborate on the same to. Looking foward to your response.
Connected Dots Online7 months ago
Hello Christian,
You are correct on both points.
1. When a device connects to a network via hotspot, in most cases the device providing the hotspot also functions as the DHCP server for the hotspot network. (There may some exceptions where the hotspot provider device uses a DHCP Relay feature to forward the DHCP Requests to a different server - check lessons 3.1 and 3.2)
2. Yes, when you configure a network device to automatically assign IP addresses to other devices on the network, that device then functions as a DHCP server. There aren't specific machines for these roles. Any device that runs a DHCP server service on it functions as a DHCP server.
Hope this clarified your questions.
Bibek8 months ago
I have a web server installed in my device. How can I access it from outside my network?
Connected Dots Online7 months ago
You would first have to assign a static IP address on your device. You would then have to go into your home internet router and look for a page where you can configure "Port Forwarding". You would have to forward TCP ports 80 and 443 to the static IP address you set on the device which has a web server installed.
Bibek8 months ago
When I try to connect my college Wi-Fi, it opens a page asking for login and password. How do I make this?
Connected Dots Online7 months ago
Hi Bibek,
in order to do this, you need an enterprise grade WiFi solution that supports a feature known as "captive portal". Some home WiFi routers may support this feature - if your home WiFi router supports creating a Guest network, it would be using this captive portal feature.
Anil10 months ago
When will materials on more NAT and DNS be published? Waiting eagerly:-)
Connected Dots Online10 months ago
Hi Anil, two more lessons on NAT should be up by later this week. :)
Jashan11 months ago
Can you tell the approximate time when the remaining portion of this course and the next two courses will be published ?
Connected Dots Online11 months ago
Hi Jashan, there should be one or two more lessons published by next week. The next 2 courses will take a while, there will probably be a workshop/lab section on everything covered in the first 6 courses before moving on to newer topics.
srinidhi1 year ago
can't wait for the NAT and DNS. Please upload ASAP. I wake up daily and check for updates. Thanks again:-)
Connected Dots Online1 year ago
NAT and DNS will take a few weeks, Srinidhi. (A couple of lessons related to Cisco DHCP configurations will be available soon, and NAT and DNS will follow right after those.) Check back in a few weeks time! Thanks!
Gautham1 year ago
thanks a lot for the lightning fast response :-)
Trân1 year ago
Do you have add course ? I just have finished Ip Services
Connected Dots Online1 year ago
Hi Trân, you do not need to add more courses. Please keep checking back from time to time. More lessons and courses will be added as they are ready.