Configure Nginx as reverse proxy & force HTTPS with self-signed SSL certificate: install Nginx, generate cert/key, configure server block, create symlink & restart service for secure web app hosting.

Configure Cisco ASA 5500-series as network gateway: set outside interface IP, create inside interface for LAN, set DNS, route traffic, and enable NAT & DHCP.

Send messages via Telegram API using Python & Requests library. Use `https://api.telegram.org/bot<token>/sendMessage` with JSON body `{ "chat_id": chat_id, "text": "Hello World!" }`. Mark up with Markdown by adding `parse_mode": "Markdown"`.

To configure Cisco device in Linux machine with Minicom: install Minicom utility, connect via COM-to-USB cable & physical connection, determine port using `sudo dmesg | grep -i tty`, launch Minicom with `sudo minicom -s` and set serial port settings.

Hardcoding tokens & database credentials in .py files is insecure. Use yaml files for sensitive data and pyyaml library to read them instead of django-environ.

Configure directory as network share on Linux with Samba: install Samba, create folder, add config to `/etc/samba/smb.conf`, set permissions & start Samba daemon.

XML explained in simple terms, used for storing structured data & creating custom tags. Example: breakfast menu with name, price, description & calories. Working with XML & Python Requests library to extract data.

Docker Compose simplifies running apps on any machine with one click, enabling serverless & cross-platform architecture. It's convenient & simple to use.

Learn NMAP basics: install, scan hosts, subnets & ports, detect OS & firmware versions, find MAC addresses and more with this step-by-step guide.

After deletion, Django models' autoincrement IDs don't reset. Use `python manage.py sqlsequencereset <app_name>` to generate SQL for resetting sequences. Run it with `dbshell` or in PostgreSQL's psql shell with `ALTER SEQUENCE`.

Create Java app in Docker: create directory, Main.java file, Dockerfile with FROM openjdk and RUN javac Main.java, then build image with docker build and run it with docker run.

Increase VPS server security by creating a new user, disabling root login, and configuring UFW to restrict access via SSH.