Time Zone and NTP Sync
Time zone configuration controls how local time is displayed and interpreted on a system, while NTP synchronization keeps the system clock accurate by continuously aligning it to trusted time sources.
DNSUTILS
DNS utilities are command-line tools used to query, troubleshoot, and validate DNS resolution. They help confirm that domain names resolve to the expected IP addresses, that authoritative name servers respond correctly, and that DNS records (A/AAAA/CNAME/MX/TXT/NS/SOA) are published and propagated as intended. On VPS and WordPress environments, DNS utilities are used daily for domain onboarding, SSL issuance debugging, CDN verification, email record validation, and incident triage when a site is unreachable.
Net-Tools
Net-Tools is a legacy collection of Linux networking utilities (such as ifconfig, route, netstat, arp, and nameif) used to inspect and configure network interfaces, routing, sockets, and neighbor/ARP tables. Many of these tools are deprecated in favor of the iproute2 suite (ip, ss, bridge, tc), but Net-Tools is still encountered on older systems, in older runbooks, and in scripts that have not yet been updated.
TRACEROUTE
traceroute is a network diagnostic tool used to map the path that packets take from your machine to a destination host. It helps identify where latency increases, where packets are dropped, or which network segment is responsible for routing problems.
PSAD Port Scan Detection
PSAD (Port Scan Attack Detector) is a host-based port scan detection tool for Linux that analyzes firewall logs (typically from Netfilter via iptables) to identify, classify, and optionally respond to reconnaissance activity such as port scans. It is commonly deployed on internet-facing servers to detect and alert on scanning behavior that may precede exploitation attempts.