SSH Host Key
An SSH host key identifies the remote SSH server and helps clients detect connection interception.
View definitionIT Dictionary
Clear, practical definitions to understand network, security, systems and IT vocabulary.
Filter by topic 63 topics
All topics
3CX 3
Active Directory 26
AI & Data 19
Applications & API 3
Backup 52
Backup & Security 10
Cloud 22
Cloud & DevOps 21
Cloud & Linux 23
Cybersecurity 93
DNS 3
Email 17
FortiGate 40
Hardware 21
IA & Data 3
Identity & API 2
Identity & Directory 15
Identity & SaaS 1
IT & Operations 7
Linux 70
Microsoft 365 84
Monitoring 2
Monitoring & ITSM 21
Networking 101
Networking & Datacenter 1
Networking & DNS 11
Networking & Ethernet 1
Networking & IPv6 4
Networking & Monitoring 1
Networking & Multicast 1
Networking & Routing 4
Networking & Security 4
Networking & Switching 4
Networking & VLAN 2
Networking & Wi-Fi 8
Networking / VPN 1
PKI & Certificates 7
Security 16
Servers 39
SSL / PKI 5
Storage 37
Storage & Authentication 1
Storage & Linux 1
Storage & Virtualization 2
Telephony 10
Telephony & VoIP 18
Virtualization 59
Virtualization & Storage 10
VMware 2
VPN & IPsec 2
Web 6
Web & Data 31
Web & Development 8
Web & Networking 3
Web & Security 2
Web & WordPress 16
Windows 46
Windows & Hardware 1
Windows & Identity 1
Windows & Security 2
Windows & Storage 2
Windows Server 5
WordPress 14
70matching definitions · 1,058 in the dictionary
Clear filters
SSH Jump Host
An SSH jump host is an intermediate system used to reach otherwise inaccessible machines securely.
View definitionSSH Key
A pair of cryptographic keys used to authenticate SSH.
View definitionSSSD
SSSD provides cached identity and authentication services for Linux clients using directory providers such as LDAP or Active Directory.
View definitionSticky Bit
On shared Unix directories, the sticky bit generally restricts file deletion or renaming to authorized owners.
View definitionsudo
A command allowing to temporarily execute an action with high privileges.
View definitionsudoers
sudoers controls which users can execute which commands with sudo
View definitionSwap
Disk space used as an extension of the RAM when necessary.
View definitionsysfs
sysfs exposes Linux kernel device and driver information through a virtual filesystem under /sys.
View definitionsyslog-ng
syslog-ng collects and processes system logs and forwards them to configured destinations.
View definitionsystemctl
The main control used to manage units systemd.
View definitionsystemd
A service and startup manager used by many Linux distributions.
View definitionsystemd Service
A systemd service unit defines how a process starts, stops, restarts, and depends on other units.
View definitionsystemd Target
A systemd target groups units to represent a startup or operational state, such as multi-user mode.
View definitionsystemd timer
A mechanism systemd planning the delivery of services.
View definitionsystemd Unit
A systemd unit defines a managed resource such as a service, socket, timer, mount, or target.
View definitiontmpfs
tmpfs is a temporary in-memory filesystem whose contents do not persist across reboot.
View definitionudev
udev manages Linux device events and dynamically creates device nodes and symbolic links.
View definitionudevadm
udevadm inspects Linux device properties and controls or tests udev event processing.
View definitionumask
A value that influences the default permissions of new files and folders.
View definitionUser Namespace
A Linux user namespace maps user and group identifiers separately from the host namespace.
View definitionWireGuard Linux
WireGuard on Linux creates encrypted Layer 3 VPN tunnels using kernel or userspace network interfaces.
View definition