Patch 479 (#501)

* Update open-netbios.md

* Images Updated for all steps

* Update open-netbios.md

* Update open-netbios.md

* Apply suggestions from code review

* Update en/azure/networksecuritygroups/open-netbios.md

Co-authored-by: alphadev4 <[email protected]>

en/azure/networksecuritygroups/open-netbios.md

@@ -12,19 +12,17 @@
 | **Description** | Determine if UDP port 137 or 138 for NetBIOS is open to the public |
 | **More Info** | While some ports such as HTTP and HTTPS are required to be open to the public to function properly, more sensitive services such as NetBIOS should be restricted to known IP addresses. |
 | **AZURE Link** | https://docs.microsoft.com/en-us/azure/virtual-network/manage-network-security-group |
-| **Recommended Action** | Restrict UDP ports 137 and 138 to known IP addresses |
+| **Recommended Action** | Restrict UDP ports 137 and 138 to known IP addresses. |
 
 ## Detailed Remediation Steps
-
-
-1. Log into the Microsoft Azure Management Console.
-2. Select the "Search resources, services, and docs" option at the top and search for Network security groups. </br> <img src="/resources/azure/networksecuritygroups/open-netbios/step2.png"/>
+1. Log in to the Microsoft Azure Management Console.
+2. Click the search bar at the top and search for Network security groups. </br> <img src="/resources/azure/networksecuritygroups/open-netbios/step2.png"/>
 3. Select the "Network security group" that needs to be verified. </br> <img src="/resources/azure/networksecuritygroups/open-netbios/step3.png"/>
 4. Click on the "Name" of the selected "Network security group" to access the port configurations. </br> <img src="/resources/azure/networksecuritygroups/open-netbios/step4.png"/>
 5. In the "Overview" tab scroll down the page and check the "Inbound security rules" under "Settings". </br> <img src="/resources/azure/networksecuritygroups/open-netbios/step5.png"/>
-6. If the "NetBIOS" for port 137 or 138 with protocol "UDP" is showing as "Allow" for all "Source" and "Destination" then the selected  "Network security group" has UDP port 137 or 138 for NetBIOS is open to the public. </br> <img src="/resources/azure/networksecuritygroups/open-netbios/step6.png"/>
-7. Repeat steps number 2 - 6 to verify other "Network security group." </br>
-8. Navigate to the "Network security group" and select the security group that needs to modify for restricting the NetBIOS protocol on port 137 or 138 to specific IP Address.</br> <img src="/resources/azure/networksecuritygroups/open-netbios/step8.png"/>
-9. Scroll down the left navigation panel and choose "Inbound security rules" under "Settings."</br> <img src="/resources/azure/networksecuritygroups/open-netbios/step9.png"/>
-10. Click on the "NetBIOS" protocol in the "Name" column and under "Source" select the "IP Address" from the dropdown menu and enter the "Source IP addresses/CIDR ranges" as per the requirement, select the required Protocol and Action and click on the "Save" option at the top panel. </br> <img src="/resources/azure/networksecuritygroups/open-netbios/step10.png"/>
+6. If the "NetBIOS" for port 137 or 138 with protocol "UDP" is showing as "Allow" under "Actions" column for all "Source" and "Destination" then the selected "Network security group" has UDP port 137 or 138 for NetBIOS open to the public. </br> <img src="/resources/azure/networksecuritygroups/open-netbios/step6.png"/>
+7. Repeat steps number 2 - 6 to verify other "Network security groups". </br>
+8. Navigate to the "Network security group" and select the security group that needs to be modified for restricting the NetBIOS protocol on port 137 or 138 to specific IP Address.</br> <img src="/resources/azure/networksecuritygroups/open-netbios/step8.png"/>
+9. Scroll down the left navigation panel and choose "Inbound security rules" under "Settings".</br> <img src="/resources/azure/networksecuritygroups/open-netbios/step9.png"/>
+10. Click on the "NetBIOS" protocol in the "Name" column and in the right pane under "Source" select the "IP Address" from the dropdown menu and enter the "Source IP addresses/CIDR ranges" as per the requirement, select the required Protocol and Action and click on the "Save" option at the top of the pane. </br> <img src="/resources/azure/networksecuritygroups/open-netbios/step10.png"/>
 11. Repeat steps number 8 - 10 to restrict UDP port 137 or 138 for NetBIOS to known IP addresses. </br>