Basic vlan on cisco 3560 with cable modem as router

This is mostly for my own notes, but maybe someone might need the info.

CREATE VLAN(S)

conf t
vlan 10
name PRODUCTION
vlan 20
name DEVELOPMENT
exit
exit
show vlan

You will see something like this:

Assign the IPs to the vlans.  This will let you route to them

conf t
interface vlan 10
 ip address 192.168.10.2 255.255.255.0
 no shutdown

interface vlan 20
 ip address 172.20.20.1 255.255.255.0
 no shutdown
exit
exit

Review the status of your work:
show ip interface brief

You will see something like this:

Make sure your switch is routing
conf t
ip routing

shouldn't show anything really.

Assign some ports to the switch. 
Here is what the current switch looks like.
We are assigning port 3 to vlan 10 and port 4 to vlan 20


interface gigabitEthernet 0/3
switchport access vlan 10
exit
interface gigabitEthernet 0/4
switchport access vlan 20
exit
exit
show vlan
You'll see something like this:

show ip interface brief

You will need to have something plugged into the ports before you can ping from the switch

Once up, you will need to add in a route to get there.
In this example, i'm just using an ISP cable modem, so it looked like this:



The destination network is 172.20.20.0 and the gateway is the default vlan 1 IP of the switch

Java Installation Script Error

"people still use Java?"

Yep.

Had an issue with installation of Java from https://www.java.com/en/download/manual.jsp

In this case it was JRE-8 update 941 and kept getting

"An error has occurred in the script on this page"

There are some methods where you can suppress error messages in Windows by going to Internet Options and in the Advanced tab, disabling Script Debug. 

Another option to try is this:

Open a Command Prompt in the directory that your Java installer is in and run the executable using this syntax

jre-8u491-windows-x64.exe INSTALL_SILENT=Enable

generate ppk with putty

 

Create SSH key pair on Windows

In this section, you use PuTTY Key Generator to create a public SSH key and private key pair to use when you create a secure connection to Linux machines in your Azure Stack Hub instance. PuTTY is a free terminal emulator that can allow you to connect to a server via SSH and Telnet.

1. Download and install PuTTY for your machine.

2. Open PuTTY Key Generator.

   

3. Under Parameters, select RSA.

4. In the Number of bits in a generated key box, enter 2048.

5. Select Generate.

6. In the Key area, generate some random characters by moving the cursor over the blank area.

   

7. Enter a Key passphrase and confirm it in the Confirm passphrase box. Note your passphrase for later use.

8. Select Save public key, and save it to a location where you can access it.

9. Select Save private key, and save it to a location where you can access it. Remember that it belongs with the public key.

Your public key is stored in the text file you saved. The text looks like the following:

text

---- BEGIN SSH2 PUBLIC KEY ----
Comment: "rsa-key-20190330"
THISISANEXAMPLEDONOTUSE AAAAB3NzaC1yc2EAAAABJQAAAQEAthW2CinpqhXq
9uSa8/lSH7tLelMXnFljSrJIcpxp3MlHlYVbjHHoKfpvQek8DwKdOUcFIEzuStfT
Z8eUI1s5ZXkACudML68qQT8R0cmcFBGNY20K9ZMz/kZkCEbN80DJ+UnWgjdXKLvD
Dwl9aQwNc7W/WCuZtWPazee95PzAShPefGZ87Jp0OCxKaGYZ7UXMrCethwfVumvU
aj+aPsSThXncgVQUhSf/1IoRtnGOiZoktVvt0TIlhxDrHKHU/aZueaFXYqpxDLIs
BvpmONCSR3YnyUtgWV27N6zC7U1OBdmv7TN6M7g01uOYQKI/GQ==
---- END SSH2 PUBLIC KEY ----

When an application requests the key, you copy and paste the entire contents of the text file.

Connect with SSH by using PuTTY

When you install PuTTY, you have both the PuTTY Key Generator and an SSH client. In this section, you open the SSH client, PuTTY, and configure your connection values and SSH key. If you're on the same network as your Azure Stack Hub instance, you connect to your VM.

Before you connect, you will need:

• PuTTY
• The IP address and username for the Linux machine in your Azure Stack Hub instance that uses an SSH public key as the Authentication type.
• Port 22 to be open for the machine.
• The private SSH key that paired with the public key.
• The client machine that runs PuTTY to be on the same network as your Azure Stack Hub instance.

1. Open PuTTY.

   

2. In the Host Name (or IP address) box, enter the username and public IP address of the machine (for example, username@192.XXX.XXX.XX).

3. Validate that the Port is 22 and the Connection type is SSH.

4. In the Category tree, expand SSH and Auth.

   

5. Next to the Private key file for authentication box, select Browse, and then search for the private key file (<filename>.ppk) of your public and private key pair.

6. In the Category tree, select Session.

   

7. Under Saved Sessions, enter a name for the session, and then select Save.

8. In the Saved Sessions list, select the name of your session, and then select Load.

9. Select Open. The SSH session opens.

Create OpenVPN Access Server with Let's Encrypt (Azure)

Here's how you could install and configure OpenVPN in the Azure cloud. 
In this instance the pre-built vm was selected

Part of the default install will be Azure providing you with a PEM key. 
You'll want to save this and possible store it safely somewhere.

1.      Download PuTTY application

2.      With Azure, it provides you a PEM key to access the box using SSH.  (this is the password so to speak).  With PUTTY being a super popular way to SSH to a box, the PEM key needs to be converted to a PPK (Private Key File)

3.      Launch the PuTTYgen app.

Click Conversions > Import Key.

4.       Select the key file you used to generate your server.   
 With Azure, you dont need a keyphrase, you can just click "Save Private Key"

5.      Save private key.

6. Close PuTTYgen.
7. Connect with SSH by using PuTTY
8. Open PuTTY, and configure your connection values and SSH key. 

9. In the Host Name (or IP address) box, enter the username and public IP address of the machine (for example, username@192.XXX.XXX.XX).
   The default user for azure ssh is "azureuser"
10. Validate that the Port is 22 and the Connection type is SSH.
11. In the Category tree, expand SSH and Auth, select "Credentials"

 

12. Next to the Private key file for authentication box, select Browse, and then search for the private key file (<filename>.ppk) of your public and private key pair.
13. In the Category tree, select Session.

14. Under Saved Sessions, enter a name for the session, and then select Save.
15. In the Saved Sessions list, select the name of your session, and then select Load.
16. Select Open. The SSH session opens.
17. The default user for azure ssh is "azureuser"
18. Logon to the server, you will be prompted to enter the user name, and if you have the key configured properly, you will be logged in.

19. You will be asked to agree to the license

20. You will then be asked a series of configuration question

21. In this example, all the defaults were selected.

22. You will also be presented with the random generated GUI password, so look for that

23. Once the questions are answered, the final bits of configuration will be completed, and you will be presented with the logon information for the GUI

24. Update the Ubunut installation with the latest
25. sudo apt update

26. sudo apt upgrade -y

27. In Azure, go to Network Settings 

28. Its a good idea to update the default SSH rule to be the WAN IP of your network to reduce chances of an attack through the SSH PORT

29. Click on the "SSH" and then change the SOURCE from ANY to IP Addresses

30. Then in the source IP put in your WAN ip

31. SAVE the changes and select +Create Port Rule

32. Set the destination port ranges to be "943" (default port used by OpenVPN Admin)
33. Give it a NAME and then press add

 

 

34. It will look like this when done

 

35. If you are going to be adding some certificates to this box,
    you may need to add port '80' for the system to download the challenge files from the server
36. Additionally, you will need to open port 443 and 1194 so that users can access this box
37. Now try and access the server with the IP  and /admin provided in the example

Select Advanced

38. Select CONTINUE

39. The "UNSECURE" means you have no CERTS for the box, yet.
40. Enter in the credentials provided when you were configuring the system in the cli
41. Enter in your credentials

42. openvpn / CvIrJINl4CBp

43. You'll get prompted with a License Agreement

 

44. You'll be in the GUI now

45. Change the GUI openvpn admin password

46. Goto USERS -> OpenVPN -> Reset Password

47. now lest add this new server to our existing license (you can share the licences among different servers)
48. Logon to your OpenVPN.com license site.  

49. Copy the Activation key from your subscription

 

50. Select "ACTIVATION" and then paste the key into the box and press "ACTIVATE"

 

51. If successful you will be taken to a screen similar 

 

52. The above picture shows "30" in yellow as the number of available licenses this account has, and the green shows the number of licenses in use on other servers.
53. Now click on Certificate management

54. Go into the DNS provider and add in the DNS name for this box and its ip.
    

    in my case, the domain is hosted in GoDaddy, so I go in an add an A record name for the box and its IP address

    
    
    
55. In OpenVPN 

    put in the FQD name of the server that matches your FULL DNS name

    
    
    
56. This link is openVPN server's link how to install Lets encrypt.  It works very well
57. Access Server: Install Let's Encrypt SSL Certificates and Automate it via CertBot – OpenVPN Support Center

55. 

Block a spammer in your 365 Tenant

 You block a spammer in Defender in a 365 Tenant (as of June 2026, until MS changes their minds and moves it somewhere else)

In defender (security.microsoft.com)

-> Email & collaboration

-> Policies & Rules

->  Threat Policies

-> Tenant Allow/Block Lists

Click on "ADD"

    -> Select Block

In the "Add domains & Addresses" box put in the email address you want to block

Set the duration of the block

Click on "ADD"

User gets a new phone and needs to re-authenticate their Microsoft MFA

Find their user name in ENTRA 

Click on "Authentication Methods"

Click on "Require re-register multifactor authentication"

Have the user try and logon to a MS product.  It will prompt them to scan the QR code to re-register their MFA.

Teams error code 700003

 

Here's what worked for us

Opend a CMD prompt as administrator

Run the command

dsregcmd  /forcerecovery

Log back into Teams

Where do I find a users bitlocker key in 365 tenant?

Computer need a bitlocker recover?

Go to INTUNE

Select USERS

Search for the user in the list and select their name

Click on DEVICES 

Select the device assigned to the user that needs the key

Click on "BitLocker Keys"

Click on "SHOW RECOVERY KEY"

Click on the "eye" to show the "BitLocker recovery key"

You can send them the key now to unlock their machine

Move data from onedrive to a sharepoint folder

 Have a situation where files are coming into a onedrive folder and they are wanted to be moved to a different folder in sharepoint.

Using PowerAutomate for this

In the source onedrive folder, "Create a flow"

Automate -> Power Automate -> Create a flow

You should see some flows appear that are common

Click on "See your flows" 

Then on the next screen that will come up, select "NEW FLOW" - Template

Look for "Move file from OneDrive for Business to Sharepoint and notify me

Make sure you are checkbox for the 3 items at the bottom and click on CONTINUE

You'll see this show up on your screen.

Click on "When a file is created"

In "Folder" section, click on the folder icon then select the folder that you want PowerAutomate to monitor.   In this example, we are looking at recordings

Click on "CREATE FILE"

In the "Site Address" put in the url for your sharepoint site.

If you have permissions to view the site

click on "FOLDER PATH" and the options should show up to where you can put it

Now click on SAVE

You can now TEST your script.  Click on TEST

Click on SAVE and TEST

Your system is now monitoring.  Drop a file into your onedrive and you should see it pretty quickly show up in the Sharepoint location

If everything is setup correctly, you should be good to go!  Powerautomate runs about every 5 minutes automatically.