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Posted on April 4, 2022April 4, 2022


POWERSHELL COMMAND TO FIND WHICH COMPUTER A DOMAIN USER LOGGED IN FROM LAST.

A great little command for auditing and troubleshooting purposes, it has to be
run on your DC, it searches through the Security event logs on your server and
prints out the results to a CSV.

get-eventlog “Security” | where {$_.Message -like “User” -AND “Source Network
Address”} | export-csv C:\Temp\ADLoginAudit.csv

Please scroll down through the CSV, and you will find the search result with the
answer you’re looking for, similar to the example result below:

New Logon:
Security ID: S-1-xxxxxx
Account Name: User
Account Domain: DomainName
Logon ID: 0xxxxxxx
Logon GUID: xxxxxxx

Network Information:
Workstation Name: Workstation Name
Source Network Address: local IP address
Source Port: xxxxx

Posted on July 14, 2021July 14, 2021


WORDPRESS ERROR “PUBLISHING FAILED. THE RESPONSE IS NOT A VALID JSON RESPONSE.”

If you try to create a new page in WordPress and get the following error.
“Publishing failed. The response is not a valid JSON response.”

You may be tempted to go down a path that’s code-related given the details in
the error message. However, please check your web-server config first because
this is likely an access control issue.

Please add this to your server’s config (Make sure you edit the path to match
your docroot):

<Directory> /var/www/html/yoursitename/public_html>
Options Indexes FollowSymLinks
AllowOverride All
Require all granted
</Directory>

Notes on what this is actually doing:

FollowSymLinks means if a dir is a symbolic link, follow the link.
Indexes mean a dir can be shown as a list if there is no index page.
AllowOverride directive is used to allow the use of .htaccess within the
webserver to allow overriding of the Apache config on a per-directory basis.
Require all granted: No IP addresses blocked from accessing this service.

In my case, AllowOverride is what’s fixing the issue here. Hope this helps!

Posted on March 11, 2021March 12, 2021


WINDOWS DOMAIN PC SMB SHARE AUTH & WINDOWS NATIVE VPN CLIENT AUTH PASSTHROUGH
WOES

When I ran into this issue, I remember how frustrating it was to troubleshoot.
So, I’m adding my solution here, hope it helps someone!

If you’re in a situation where you’re setting up a Windows domain-joined
computer for remote access to a SMB share that is to be accessed through a VPN,
you may run into a situation where Windows attempts to use the VPN session
credentials to authenticate the SMB share/mapped drive connection and fails. You
can verify this by opening Windows Credential Manager and deleting the session
stored creds, you will notice that you’re now able to access your mapped drive.

This typically wouldn’t be a problem if the VPN was connecting to a Windows RRAS
server on the same domain because the creds would be the same, or if your VPN
server that is not RRAS authenticated users through LDAP for the said domain.

Now, that we have that out of the way, here’s the solution!

Under %AppData%\Microsoft\Network\Connections\Pbk you will find the VPN
setttings file called rasphone.pbk, edit it with notepad and make these changes:

Right click on the VPN’s .pbk file and open it with Notepad. (Remember to untick
‘Always use this program for this file type’)
Roughly 5 lines down will be an entry ‘UseRasCredentials=1’
Change this to ‘UseRasCredentials=0’
Save the file.

Now, your SMB share will authenticate with the stored creds once again!

Posted on November 25, 2020November 25, 2020


AWS CLI IN WINDOWS – HOW TO CONNECT

Amazon doesn’t have a simple guide on how to do this so here we go!

First, you must download and install the AWS CLI for Windows, you can download
that by clicking here.

Once installed, you can open Windows Powershell or a Command Prompt and run the
following commands to connect to your AWS account:

aws configure
Access Key ID: Your Access ID
Secret access key: Your Secret Access Key
Default region name [None]: us-east-1 (or whatever region is your default)
Default output format [None]: json

Should look something like this:

That’s it! Now you’re connected to your AWS environment and can run commands
against it. As a note, you can find your Access ID and your secret access key
under users in your IAM (Identity and Access Management).

Posted on November 25, 2020November 25, 2020


DELL OMSA EMAIL NOTIFICATIONS

Dell OpenManage Server Administrator does not have a built-in way to send email
alerts if you don’t have an iDRAC system. This guide is a way for those systems
to still send you alerts about the server hardware. If you have a system with an
iDRAC, please use this guide:

Dell iDRAC – Configuring Email notifications

If your system does not have an iDRAC or it’s not configured and you still want
to get alerts through Openmanage then please follow this guide:

Requirements:
-Dell Server with OpenManage Installed
-Microsoft .Net Frameworks v2.0 (Download Here)
-DellSMTPNotify Application (Download Here)
-DellSMTPNotify Alert List (Download Here)

Installation – Part I:
Extract files to C:\DellSMTPNotify
Edit Config.xml and configure DefaultEventSettings to your SMTP server.

Now we are going to test the SMTP settings by running the script. Open command
prompt and navigate to
C:\DellSMTPNotify. Then type the following: “DellSMTPNotify.exe 1“.
DellSMTPNotify associates numbers to messages. Looking at config.xml, you can
customize the messages. In this
case, “1” would send message “Message from server: Watchdog ASR”.

You should have received an email alert. If you didn’t receive an email, check
your SMTP settings in config.xml.

Installation – Part II:
Now that we have our DellSMTPNotify.exe working properly with our SMTP settings.
We can now get it to work with Dell OpenManage.
Login to Dell OpenManage and navigate to Alert Management

Under Alert Actions, select Watchdog ASR.

Under “Set Alert Actions for Watchdog ASR”, enable “Execute application.” In the
whitebox, place the Abolute patch to DellSMTPNotify.exe with code to Watchdog
ASR. The code for Watchdog ASR is 1, and would place the following
“D:\DellSMTPNotify.exe 1“.

Now we have setup email alert for Watchdog ASR. We will have to do the same
thing for the rest of the alerts.

Posted on August 11, 2020August 12, 2020


TIME AND NTP ISSUES AFTER MIGRATING BARE METAL TO HYPERV – FIXED!

A while ago I migrated a Windows Server running AD from bare-metal to HyperV
using Disk2VHD, everything went without a hitch as it has always done, it’s a
great little tool btw and has saved me so much time and hassle.

Fast-forward to a week later and I’m getting calls from the customer reporting
that the time on their computers are off. Logged into the AD and ran a w32tm
query command to check what NTP server it was synchronizing with (w32tm /query
/status) and found that it was not syncing with any NTP server that I was
familiar with:

I suspected that this may have something to do with the HyperV migration and was
digging through the VM settings in HyperV and found a setting under Integration
Services for Time synchronization that was enabled; it was causing the AD to
sync to the HyperV host instead of the NTP server it was previously syncing
with. So, step1 of the fix was to disable this setting:

Step2 was to set the AD to sync with a NTP server again, Microsoft has a guide
on how to do this here:

Link

Back in business!




ABOUT THIS SITE

I’m Navin Isaac, I work as a systems and network administrator.                 
                                                      This is my tech blog,
where I post about solutions to issues I’ve encountered and other projects that
I’m working on.


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