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#11
Homework Help / Re: How does DHCP client knows...
Last post by deanwebb - February 06, 2024, 09:39:19 AM
The network device that the client is attached to handles the DHCP request. The request is bound to a MAC address, so the network device makes sure that the request gets back to the device with that MAC address. In the case of multiple DHCP servers, the first to respond will be the one the client goes with.
#12
Homework Help / How does DHCP client knows tha...
Last post by networkloser - February 06, 2024, 02:15:09 AM
Let's discuss the "DORA" of DHCP.

1) Discover
Client broadcasts that "I want IP address".
Destination IP address=All 0s.
Destination hardware address=All Fs.
Source hardware address=DHCP Client address

2) Offer

Server/s makes an offer.
Destination hardware address=client's mac address
So that client knows the offer is for it.
It also should contain server's IP address/es.

3) Request

Client broadcasts DHCP request packet.

This includes,
DHCP Server's IP address so that other can cool down their IP address so client gets from who it wants.
Client's hardware address so that client hardware->IP address mapping can be done.
Destination address is All Fs, so that all hosts receive the notification.

4) Acknowledgement.

I am following TCP/IP foundations by Black and I'm confused how will the client know that the acknowledgement came for it?
#13
Home and Small Office Networking / Re: General network architectu...
Last post by deanwebb - February 02, 2024, 09:32:43 AM
That's a broad question. Generally, architecture is a description of the solutions in place and how they interact. There's a level of detail to the documentation for a solution:

Architectural Handbook (AH): a high-level view of the solutions, providing guiding principles for the deployment. Should initial design choices run into difficulties, use the AH to provide guidance in how best to resolve those difficulties.

High Level Design (HLD): Details hardware and software to be acquired along with licensing, where it will go, how it will be rolled out, and system settings to be used.

Low Level Design (LLD): Specifies on an interface level how things are to be connected. Often a set of network diagrams with explanatory notes.

In the Americas, the documents tend to be brief. In Europe, they tend to be larger and more wide-ranging.

That being said, the architecture for you scenario would specify the order the devices mentioned would be arranged. We'd want to know more about whether those are running on separate platforms or on the same one. Also, is this for accessing an external-facing application that is exposed to the Internet, or is this for access to an internally-hosted application that is not otherwise exposed to the Internet? Those answers will determine how the pieces fall together.

To boost architecture skills, ask more questions and get more answers. Architecture involves learning about many different technologies so that you have a range of tools to draw upon when asked to solve for a particular business case.
#14
Home and Small Office Networking / General network architecture f...
Last post by networkloser - February 01, 2024, 02:21:36 AM
What is the general architecture of a network that comprises of Web Application Firewall(F5), Firewall, VPN, reverse proxy(nginx)?

I am new to this field and I am wondering what the architecture in general looks like? And where can I learn more about this? Any courses or certification exams that I can do to boost my network architecture skills?
#15
Homework Help / Re: IT infrastructuur plaat DM...
Last post by deanwebb - January 28, 2024, 11:19:04 AM
It may be that this is a development environment, regardless of the end purpose of the application or product, so I went with that idea in my response.
#16
Homework Help / Re: IT infrastructuur plaat DM...
Last post by icecream-guy - January 27, 2024, 05:49:26 PM
circuit boards? AND and OR gates, transistors, resistors are a bit out of league here if you are trying to design a circuit board.

from google translator English to Dutch

Printplaten? AND OR poorten, transistors, weerstanden zijn hier een beetje buiten de competitie als je een printplaat probeert te ontwerpen.
#17
Homework Help / Re: IT infrastructuur plaat DM...
Last post by deanwebb - January 26, 2024, 08:50:54 AM
What is meant by DMS? There are many acronyms with that name.

Next, what is the technical issue here? I assume that this is a development environment for a person working from home.

If there is only one application server, there is no need for a load balancer. Also, I would not use a direct connection through the firewall. Instead, the home user should connect through a Cloud access security broker (CASB) that provides a better security layer than a direct connection or a VPN connection.

I do not see why the application server needs to use LDAP to reach the database server. If there is a matter of identity, then an LDAP call to a directory server for authentication would be made by any server receiving a login.

Do you need to specify the TCP services used between the database server and the other servers?

Wat wordt bedoeld met DMS? Er zijn veel afkortingen met die naam.

Vervolgens, wat is hier het technische probleem? Ik neem aan dat dit een ontwikkelomgeving is voor iemand die vanuit huis werkt.

Als er slechts één applicatieserver is, is er geen load balancer nodig. Ook zou ik geen directe verbinding via de firewall gebruiken. In plaats daarvan moet de thuisgebruiker verbinding maken via een Cloud Access Security Broker (CASB) die een betere beveiligingslaag biedt dan een directe verbinding of een VPN-verbinding.

Ik begrijp niet waarom de applicatieserver LDAP moet gebruiken om de databaseserver te bereiken. Als er sprake is van identiteit, wordt er voor authenticatie een LDAP-oproep naar een directoryserver gedaan door elke server die een login ontvangt.

Moet u de TCP-services opgeven die worden gebruikt tussen de databaseserver en de andere servers?
#18
Homework Help / Re: IT infrastructuur plaat DM...
Last post by deanwebb - January 26, 2024, 08:38:20 AM
English translation:

Hello all.

I am looking for help. In a business process assignment I also have to describe the current IT infrastructure.
I just run a fictitious company. So I can't request anything. So now I want to make a fictional circuit board for a DMS.
I have made an example of an on-premise environment, but I don't know if I am doing it right and what I am overlooking. My question is can anyone help me with this.

I have uploaded my example as an image

[IT.png](https://postimg.cc/FdmfxHKh)

Thanks for the help
#19
Homework Help / IT infrastructuur plaat DMS
Last post by H_1992 - January 25, 2024, 08:19:14 AM
Hallo allemaal.

ik ben opzoek naar hulp. ik moet bij een bedrijfsproces opdracht ook de huidige IT infrastructuur beschrijven.
alleen werk ik een fictief bedrijf uit. ik kan dus niks opvragen. nu wil ik dus een fictieve ketenplaat maken voor een DMS.
Ik heb een voorbeeld gemaakt van een on-premis omgeving alleen weet ik niet of ik goed zit en wat ik over het hoofd zie. mijn vraag is kan iemand mij hierbij helpen.

ik heb als afbeelding mijn voorbeeld geüpload

[IT.png](https://postimg.cc/FdmfxHKh)

alvast bedankt voor de hulp
#20
Home and Small Office Networking / Re: Can I use two dissimilar w...
Last post by deanwebb - January 22, 2024, 12:11:25 PM
Mixing equipment made by the same vendor can have a few issues, but is generally doable.

Mixing equipment made by different vendors can have so many issues, it'll make you want to just buy another piece of gear from one of the vendors and be done with it. Even though there is an EasyMesh standard, none of the wifi vendors out there has any incentive to use it.