| Linux Daemons | Details |
| ntpd | Network Time Protocol Daemon |
| httpd | Hyper Text Transfer Protocol Daemon |
| sshd | Secure SHell Daemon |
| sendmail | Mail Server Daemon |
| snmpd | Simple Network Management Protocol Daemon |
| iptables | Network Filtering Protocol Service |
| nfsd | Network File System Server Daemon |
| nscd | Name Service Cache Daemon |
| named | Dynamic Naming Service Server Daemon |
| smbd | Simple Message Block Server Daemon |
To find out what network services are running or listing under Linux, Use netstat as follows:
With the help of netstat command, you can print information about the Linux networking subsystem including running services. It can display program name and PID for each socket belongs to