Networking

Tools for network diagnostics, port checking, connectivity testing, and DNS verification. Essential for troubleshooting connection issues between services.

Cek Listening Port
sudo ss -tulpn
Cek Port Spesifik
sudo lsof -i :[PORT]
Test Koneksi (TCP)
nc -zv [HOST] [PORT]
Ping Host
ping -c 4 [HOST]
Traceroute
traceroute [HOST]
NSLookup
nslookup [DOMAIN]
HTTP Check (Simple)
curl -I [URL]
Check TLS/SSL Expiry
echo | openssl s_client -servername [DOMAIN] -connect [DOMAIN]:443 2>/dev/null | openssl x509 -noout -dates
Whois Domain
whois [DOMAIN]
Reverse DNS Lookup
dig -x [IP] +short
Check Firewall Rule
sudo iptables -L -n -v
HTTP Check (Full)
curl -Iv [URL]
Cek IP Publik
curl ifconfig.me
Cek IP Lokal
ip addr show
DNS Lookup
dig [DOMAIN] ANY
Check Firewall Status (UFW)
Check status of UFW firewall.
List Iptables Rules
List all iptables rules with line numbers.
Bandwidth Monitor (iftop)
Real-time bandwidth monitoring.
Bandwidth Monitor (nload)
Real-time network traffic and bandwidth usage.
DNS Lookup (Short)
Get only the IP address.
DNS Trace
Trace the path of a DNS query.
Check SSL Chain
Show server certificate chain.