- https://centralops.net – see domain records and perform port scans for any website.
- http://jodies.de/ipcalc – subnet calculator.
- Sonicwall Support Matrix – shows what models and firmware you can migrate from and to.
- https://www.advanced-ip-scanner.com – Network scanner. Great for scanning an internal network for discovery, find available IPs. Options to install or run portable version. No dependencies.
- Putty – telnet/SSH/console utility.
Jason works as a project specialist at an IT MSP in Erie, Pennsylvania, USA. He’s an IT/security professional with 17 years experience.