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Networking

• Ethernet: arp
• TCP/IP
• Secure Shell
• Cisco IOS
• DMZ, Port knocking, Bastion host, Firewall Software: iptables ufw firewalld nftables firewall-cmd ipfw (FreeBSD) PF (OpenBSD), netsh advfirewall, PAN-OS, WAF, pfsense, VyOS, Cisco ASA, DMZ, F5, URL Filtering, port forwarding, macOS application firewall, Windows firewall, Fortigate, ngrok, Network ACL

OS

• Linux:
  • Linux Distributions
  • Linux Commands
  • LVM, ZFS
• macOS
• Cisco IOS
• PAN-OS: firewall

Virtualization

• KVM: virsh
• Containers: Kubernetes, Docker (docker-compose)
• VirtualBox
• multipass

Web Servers

• Nginx: nginx.conf
• Apache

Databases

• MariaDB
• PostgreSQL
• RocksDB (library)

Key-value

• Redis
• etcd

Security

• SIEM
• IDS
• VPN
• AIDE
• Wi-Fi: WEP, WPA
• Linux: SELinux
• OpenSSH: sshd, ssh

Storage

• multipath
• NetAPP: ONTAP
• deduplication

DevOps

• Ansible
• Terraform
• Configuration management: Puppet

Development

• GitLab
• GitHub
• TeamCity
• Jenkins

Software

• Mediawiki
• Confluence

Misc

• Changelogs

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