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sys- & network admin XP (tools & services (useful shell tools…
sys- & network admin XP
theory
networking
OSI model
TCP/IP
SSH
FTP
HTTP/S
TLS
802.*
Ethernet
WiFi
SMTP
ICMP
IP
IPsec
TCP & UDP
firewalls, network segmentation & architecture
routing
operating systems (OS)
processes & process management
memory management
virtualization
kvm / libvirt
Docker
Linux-specific
initd & systemd
Filesystem Hierarchy Standard (FHS)
LVM
LUKS
X11
cryptography
symmetric
asymmetric
hashing
tools & services
useful shell tools
tmux & screen
vim & vi
sed & awk
ssh related commands
sudo
apache2
postfix
dovecot
mysql & mariadb
postgresql
NFS
Samba
autofs
CUPS
LDAP
WordPress
MediaWiki
Nextcloud
letsencrypt
curl
jq
gpg
Mattermost
documentation & cooperation
git
continuous integration (CI)
programming
bash
php
python
perl
security
secure coding
OS hardening
network security
IDS
IPS
malicious security testing (aka pentesting)