Linux Commands to Support SASE Implementation

Here are some Linux commands that can help in managing and monitoring network security and performance:

Network Monitoring

1. ping: Check the reachability of a host.

ping google.com

2. traceroute: Trace the route packets take to a network host.

traceroute google.com

3.netstat: Display network connections, routing tables, interface statistics, etc.

netstat -tuln

4. ss: Another utility to investigate sockets (similar to netstat but more modern).

ss -tuln

5. tcpdump: Packet analyzer that captures and displays TCP/IP and other packets.

sudo tcpdump -i eth0

Firewall Management

6. iptables: Configure IP packet filter rules.

sudo iptables -L

7. ufw: Uncomplicated Firewall, a front-end for iptables.

sudo ufw status

Security Tools

8. nmap: Network exploration tool and security/port scanner.

nmap -sP 192.168.1.0/24

9. fail2ban: Intrusion prevention software framework that protects computer servers from brute-force attacks.

sudo fail2ban-client status

System Monitoring