MAC Spoofing – Keep victim out

I have successfully done a MAC Spoofing Attack on my open (ad-hoc) network using the macchanger tool (OS: Kali linux).

I would like to know what are the common techniques to keep the connection alive (so, the way to keep the machine with the real mac out of the network) because, when I try to reconnect using the victim’s machine (Windows 10), the Windows machine obviously kicks out my Kali host from the network.

How to keep consistency across the application architecture as a team grows?

As the sole developer in a startup, I had the luxury of being able to make a lot of decisions in the architecture and frameworks of our application.

Fast forward 4 years and an acquisition later, I have a team of 5 and a lot of time it feels like the wild west. People making whatever design decision pleases them: integer and enums for DB types in one place and string another, this framework for a problem and then a different framework for the same problem elsewhere, etc.

How do I go about enforcing consistency? It feels important to me but my team members seem to subscribe to the “if it works, it works” methodology.

SP 2013 user profiles keep reverting to old profile information

I have this issue where we have a script that updates user profiles if there has been changes to their profile which as being changed in a custom list. this script runs every night.

however recently i noticed. all profiles have gone back to the old profiles and no matter how much change i make, they always go back to the old one. tried manually editing the profile from the UPA and running the script to update UP not still nothing.

is this due to the AD sync happening every 1 am? But what is odd is that in the people picker of sharepoint site. when i add people in sharepoint groups, people picker displays that correct profile (I undertsant that people picker is retrieved from AD) but when i click add, the added user has the wrong profile (profile in UPA).

this means that the profiles in AD are most likely correct (i have no access to the AD so i wouldn’t know and AD team is not being helpful) and that the sync must sync from AD to SharePoint UPA but what’s happening is that the information is being reverted to the old info and i am not sure what i am already missing.

How can I keep Ubuntu Core disk usage small

I’m new to Ubuntu Core and I’m not very experimented with linux.

I converted the amd64 image of Ubuntu Core to a VDI disk and I run it successfully with virtualbox.

The starting 260MB of the disk grew up to 1GB without many additions (just the snap of aws-iot-greengrass). I guess it is related to the system keeping the snaps up to date with various images in the background.

Although this is still quite contained for a full OS, is there a way to keep the image size closer to the distribution size ? This is for an IOT project where storage ressources are limited.

Any hints or advice is welcome to put me in the right direction fo trimming the system’s size down and keep it low.


— Jean-Philippe

Step by step replace postfix mail server with a new machine and keep service working?

I have an amazon postfix mail server on Ubuntu 16.04. I need to replace it with 18.04 for some reasons. I need to use the tutorial below:

My current setup was using the tutorial below:

I’m backing up Database, Dovecot, Postfix, Postgray.

What I need! 1- What to take care about (hints). 2- Keep the current machine working until finish the new one. 3- Setup the new machine without affecting the service. 4- Shutdown the old one and replace IP address.

How to keep track of updates to APK

I use only a handful of apk that are not from Google Play store (for whatever reason). For example Youtube Vanced, GCamera, Blokada.

But since they are not in the Play store, is there any way I can check if there are any available updates to all my “unofficial” apps?

I mean check from one place and automatically, not going to the relevant sites and checking manually every few days.