Kali Linux 2020.2 Wifi Not Working (Realtek)

So: I’ve been working on trying to set up my WiFi on my new Kali linux OS. I am using a Realtek RTL8723DE 802.11b/g/n PCIe Adapter. iwconfig gives me the results:
lo no wireless extensions.

eth0 no wireless extensions.
I have tried installing a zip file from github but it is no longer there and when I follow the other instructions it wants a user name and password. I made an account but to no avail. (https://h30434.www3.hp.com/t5/Notebook-Wireless-and-Networking/Realtek-8723DE-wifi-module-amp-Bluetooth-Linux-driver/td-p/6477307) This is the link to that set of instructions.
I have also tried this (https://www.kalilinux.in/2020/03/how-to-install-wi-fi-driver-in-kali-linux.html) and it did nothing for me either.
Any help would be greatly appreciated, thank you.

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Author: Harriet

Is there a standard approach for serializing an RSA encrypted AES key alongside the AES payload itself?

Diffie-Hellman won’t really work here, since only one side has a public key, one side has the private. It must be this way to prevent decryption when the data is at-rest on one of the sides before transmission.

Currently, I am using RSA-2048 only, which limits the payload size to 245 bytes. I want to support much larger sizes of data, so a RSA/AES hybrid makes sense.

I know that it would work if I generate a random AES key, encrypt that AES key using the RSA public key, encrypt the real payload using the AES key, and then serialize them in sequence (this has to be transmitted as one chunk) like so…

<RSA-encrypted-AES-key> <some-delimiter> <data-encrypted-with-AES>

My question is… should I just use the above format with the delimiter? Seems pretty straight forward. Perhaps there is a more standard / expected way to serialize these two together?

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Author: Wisteso

How Can I Create a Friendly Slug for a Dynamic Page?

I built a dynamic page template that pulls biography information from a MySQL table.

The page works fine but the URL is ugly.


I have a set of canonical slugs that I want to use for each officer.

for example, Officer-Firstname-Lastname

I’ve tried both htacess and add_rewrite_rule and both give me 404.

example: add_rewrite_rule('Officer-Erich-Abberger', 'Officer-Biography/?ID=1', 'top');

What am I missing?

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Author: jpollar

js files occasionally failing to load

We have a newly configured php7 16cpu 32gb RAM Linux server.
Plenty of power for what we need.

We have a basic form on a page that requires a login.

However, sometimes when a user lands on the page, the js files fail to load which in turn prevents them from logging in.

This doesn’t happen every time, but often enough to where we cannot use the newly configured server.

KeepAlive is enabled, as seen by this curl command:

Content-Type: text/html; charset=UTF-8 Content-Length: 0 Connection: keep-alive

I have attached an image of what we’re seeing.

Could this have anything to do with server/Apache configuration, as we notice the js files always fail at the 10 second mark.


enter image description here

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Author: mcs

API / System Design [Flexible Authentication / Authorization]?


We’re a smaller shop that puts out a number of products that require
authentication and authorization. We’re currently using a 3rd party
service to “spin up new auth APIs” for each application. However, I
would like to investigate potential designs for doing this ourselves
in-house due to additional security requirements that may be needed in
the future. I’ve included information below and would appreciate any
design or support as I’m relatively fresh with designs of this scale.

Summary of goals:

An interface that allows a developer to create and manage
authentication APIs for multiple applications via a webpage. This
includes the mostly automated process of spinning up new auth APIs,
and ideally the ability to do some form of RBAC / ABAC changes via
this page.

Acceptable ‘Limitations’:

  1. All APIs can expose the same common-auth endpoints, so they’re basically just “Images” of one another. (I.e. Login / Register / etc.)

  2. While this would ideally be entirely automated, some parts I’ve thought of being manual are:
    * Domain configuration (pointing subdomains to new endpoints)
    * Spinning up additional VMs (needed?)
    * Spinning up additional DBs or tables?
    * Minor configuration changes
    * others I haven’t thought of?

User Stories:

  • As a Developer, I want to login to a web portal so that I can manage auth APIs.
  • As a Developer, I want to create a new API in the web UI, so that I can then integrate it to new applications.
  • As a Developer, I want to manage users in the web UI, so I can oversee access to our applications.
  • As a Developer, I want to **…

Future Considerations:

Each new API for the applications should likely have the user stores
(table containing user information) segregated into different
databases stored on separate hardware to minimize attack vectors and
improve security/scaling. For now, I’m thinking of different
subdomains or maybe request parameters to separate the APIs?


I feel like there may be some solution that involves building a
template/image of an Auth API on Azure and just duplicating the VM or
image, but I’m not too sure of this route either. Obviously
management, maintenance, updates, etc. to these would be more
hands-on, but feel free to provide feedback on this as well.

Thanks in advance!

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Author: ClicheCoffeeMug

MariaDB subqueries to same table and column resulting in several columns

I have a table and want to pick monthly minute data to compare column wize in 10.3.13-MariaDB

Tested and tested for hours and hours different approaches without success, one example is below. Some tests does not complain syntactically but takes forever, and some tests complains about column names not recognized. All subqueries if tested separately return the same number of records, each in one column.


(SELECT rdate from OO where month(rdate) = 7 and year(rdate) = 2006) AS RD,

(SELECT ot from OO where month(rdate)=7 and year(rdate) =2006) AS OT1,

(SELECT ot from OO where month(rdate)=7 and year(rdate) =2007) AS OT2,

(SELECT ot from OO where month(rdate)=7 and year(rdate) =2008) AS OT3;`

The result should be something like:


2006-07-01 00:00:00 1.2345 2.1234 1.543

… … … …

2006-07-31 23:59:00 3.456 3.234 2.234`

And, no I dont want to use UNION because then they will still follow one after the other…

Any thoughts?!

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Author: OldBadger

Are there serious problems with an EC2 auto-scaling AMI that automatically downloads newest server from git?

I’m converting some servers from manual scaling (with a load balancer) to auto-scaling. I’m currently using an Ansible script to manage upgrades, and I wouldn’t want an automatically created instance to not be using the newest version of the software. I created an AMI that will download the newest commit from a chosen branch on first boot.

I’ve since realized my approach is somewhat like “cowboy coding”, since AWS provides a mechanism to replace auto-scaling instances when there should be an update. (If using that, my existing update script would become obsolete, and I guess the update would entail creating a new AMI containing the new server version.)

Are there any serious problems with using the “cowboy” approach? I realize auto-created servers might end up with newer code than the other servers (if someone pushes but does not deploy their code changes). I wonder whether auto-scaling will cause Ansible scripts to fail if servers are terminated while being processed by Ansible. What have I missed?

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Author: piojo

redis connection error within docker container

I’m trying to setup a light-weight RQ task queue app running in Docker. I keep on getting this error:

redis.exceptions.ConnectionError: Error -2 connecting to redis:6379. Name or service not known.


ValueError: Redis URL must specify one of the following schemes (redis://, rediss://, unix://)
I get the first error if I hardcode redis://redis:6379 and the second when grabbing from environmental variable (os.getenv()). I looked at: link1 and link2, but there wasn’t really a solution, the thread went dead.

My redis connection code is like so:

import os
import redis
from rq import Worker, Queue, Connection

listen = ['default']
redis_url = os.getenv('REDIS_URL', 'redis://localhost:6379')

if __name__ == '__main__':
    print(f"redis url: {redis_url}")
    with Connection(redis.from_url(redis_url)):
        worker = Worker(list(map(Queue, listen)))

When it prints the redis_url it is correct; I set the environmental var, REDIS_URL to redis://redis:6379 where redis is the hostname in docker-compose.yml.

    image: redis:alpine
      - '6379'

Appreciate any help. Thanks.

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Author: Spencer Trinh

Can Mutt be used to access Inbox messages in a bash script?

I’ve got scripts that collect data on errors and sends them into a ticketing system. If any developments occur regarding an existing ticket, I want to be able to access the email inbox to get the ticket number so that I can include this in the reply. This will result in the ticketing system including the new information in the old ticket instead of creating a new ticket every time. Is this possible?

I’ve been looking online for how I might be able to do this but I haven’t yet found anything that looks like bash commands to access the inbox programmatically and save a message’s information to a variable.

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Author: Tom Cayton

Pulseaudio set-card-profile in default.pa not working

I am trying to set a profile persistently across reboots. Manually doing the following works:

$ pulseaudio --start
$ pacmd set-card-profile 0 'output:iec958-stereo'

But, it is not persistent across reboots, so I edited ~/.config/pulse/defult.pa appending another line:

set-card-profile 0 'output:iec958-stereo'

Adding the line to the end of default.pa causes pulseaudio to refuse to start with the error ‘Daemon session failed.’

How can I keep the profile setting persistent across reboots?

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Author: Paul

jquery: adding rows at the bottom of a table make table y-scroll jump into to start position

I’ve created a “log viewer” method that contains a table with a fixed header; initially this method loads 200 lines into the table, and will load more lines on demand. If you scroll down (until certain y-scroll % ) method will do a request to server asking for a further 100 lines from bottom, then will catch these lines and append them at bottom of this table…

Similar behaviour is for the top if y-scroll reach certain % of table ‘y-scroll’ and the top line is not the initial line, it will request 100 (or the number of lines to the top if less than 100) and insert those lines into the top.

This is working perfectly so I’m very satisfied with it; as it is what I wanted.

All rows are kept in a “<tbody>” block

Now Here is my problem: in some occasions when method is adding new lines at the bottom of the table, the table ‘y-scroll’ jump from its position to start position which is not what I want, as it makes experience very annoying…

Expected behaviour will be: table y-scroll will move slightly up while is appending new rows into the bottom of the table.

This happens if you try to scroll yourself picking the scroll bar with the mouse and dragging it yourself, or pressing PgDown key, or pressing DownArrow Key…

Here is the code of this method:

          "logfile_hash_key": logfile_hash_key,
          "initial_line":  initial_line,
          "requested_rows": requested_rows,
          "web_request": true

              // I need to reverse the array to start inserting on the table, because otherwise inserted
              // lines will be reversed
              // If request is from top...
              if (requested_rows < 0) {
                    new_initial = initial_line + requested_rows
                    if (new_initial < 0){
                        initial_line = 1
                    sinitial_line.value = new_initial
                    starting_row = 0
              else { // if Request is from bottom...
                    new_final = initial_line + requested_rows
                    if (new_final > file_line_count) {
                         new_final = file_line_count
                last_row_on_table=document.getElementsByClassName("tb-Log-Viewer")[0].rows.length - 1

                starting_row = -1

                sfinal_line.value = new_final


              $.each(data, function(key,value) {
                    row = table.insertRow(starting_row)
                    for(cell_n=0; cell_n < value.length; cell_n++){
                        cell[cell_n] = row.insertCell(cell_n)
                        // verify cell has a "String" value
                        if (data[key][cell_n].__proto__ == "".__proto__) {
                            cell[cell_n].innerHTML = data[key][cell_n]
                            if (cell_n == 0) {
                               cell[cell_n].style = "text-align:center"
                               cell[cell_n].className = "Line"
                        // Check value for given cell is an array
                        if (data[key][cell_n].__proto__ == [].__proto__) {
                            cell[cell_n].innerHTML = data[key][cell_n][1]
                            attributes = data[key][cell_n][0].replace("style=","").replace(/'/g,"").trim().replace(" ",";")
                            cell[cell_n].style = attributes.replace("bgcolor=","background-color:")

Here is the HTML portion of this that define the table (All this is being generated by a python code):

<table class="logviewer" width="85%" border=1 cellpadding=10 cellspacing=0>
<thead class="th-Log-Viewer">
.Line {
   width: 70px;

.Timestamp {
   width: 170px;

.Severity {
   width: 80px;

.Message {
   width: 1800px;


<tr class="tr-Log-Viewer">
<th  class="header-Line">Line</th>
<th  class="header-Timestamp">Timestamp</th>
<th  class="header-Severity">Severity</th>
<th  class="header-Message">Message<div class="rows-data"><table><tr><td><span id="scroll-action"></span></td><td><span id="top-row"></span></td><td><span id="bottom-row"></span></td></tr></table></div></th>
<tbody class="tb-Log-Viewer" onscroll="Log_Viewer(this)">

<td class="Line" style='text-align:center'><a id='1'>1</a></td>
<td class="Timestamp" style='text-align:center'>2020-07-07 08:19:48</td>
<td class="Severity" style='text-align:center' bgcolor=#3cb371>INFO</td>
<td class="Message" style='text-align:left'>[INFO ] 2020-07-07T08:19:48,516Z [main] cliutils.CliWrapperBase. - Application Args: generate-node-info</td>


So what could be causing this table y-scrolling jump into starting position???

Thank you.

I’ve asked this question on StackOverflow but it has couple of weeks and no answer…

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Author: Larry

Wodpress Customizer Selective Refresh Div with respective Javascript and Localized data

There is a div with the selective refresh which is having a javascript to make some changes. As due to selective refresh HTML is dynamically updating hence respective javascript stops working as it has selected previous element which has obviously replaced.

How to deal with this situation? Is there any way to refresh the javascript as well?

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Author: Rohit Patil