Network & Security
VPN configuration templates plus future knowledge around routers, switches and firewalls.
All tools in this category
Network Planning Assistant
Answer questions about company size and requirements — get recommendations for network topology and segmentation.
Network Documentation Generator
Capture devices, IP addresses, VLANs and locations in a table and export as network documentation.
Network Configuration Validator
Check a device configuration for typical errors like duplicate IPs or insecure default settings.
Network Troubleshooting Assistant
Answer guided questions and get step by step to the most likely cause of a network problem.
Network Solution Advisor
Answer questions about locations, budget and requirements — get a matching network solution (VPN, SD-WAN, firewall) recommended.
PowerShell Knowledge Center
Frequently used PowerShell commands sorted by topic — for quick lookup and copying.
CMD Knowledge Center
Frequently used Windows command-line (CMD) commands sorted by topic.
Config Analyzer
Paste a device configuration — hostname, interfaces, VLANs and IP addresses extracted automatically.
Subnet Calculator
Enter an IP address and prefix — instantly calculate network, broadcast, host range and mask. Includes VLSM.
VLAN Generator
Define VLANs with ID, name and subnet, and generate matching switch configuration commands.
Firewall Rule Generator
Capture firewall rules in a table and export as iptables commands.
Configuration Command Generator
Choose common network configuration tasks and generate matching commands for Cisco, MikroTik or Ubiquiti.
VPN Planner
Get a recommended VPN technology based on your requirements.
WireGuard Config Generator
Generate a WireGuard client and server configuration with key pair.
OpenVPN Config Generator
Assemble an OpenVPN client configuration file (.ovpn).
Site-to-Site VPN Assistant
Put together configuration templates for site-to-site VPN connections.
DNS Check
Look up a domain's A, AAAA, MX, NS, CNAME and TXT records live.
SPF Check
Check a domain's SPF record, including a warning for too many DNS lookups.
DKIM Check
Check a DKIM record for a domain and selector.
DMARC Check
Check a domain's DMARC policy — policy level and reporting addresses.
SSL Check
Check a domain's SSL/TLS certificate — validity, issuer, and days remaining.
Uptime Check
Check whether a website is reachable — HTTP status, response time, and server header.
Good to know about this category
Tools around networking, VPN, Microsoft 365, Docker, Linux, monitoring and servers for admins and IT teams.
To handle recurring IT administration tasks faster and more securely.
- Prepare VPN configurations
- Create Microsoft 365 groups
- Look up container configurations
- Monitor systems
- Test configuration templates before deployment
- Try changes in a test environment first
- Create backups before major changes
The information, templates, scripts, calculations and recommendations provided are intended for educational and assistance purposes only. Always review and test any generated result before production use. IT Smart Service accepts no liability for misuse, data loss, outages, security incidents, or legal, financial or technical damages arising from incorrect or improper use. Responsibility for validation, testing and deployment decisions rests with the user.
Related Categories
Vendor-specific knowledge centers with CLI examples and configuration guides for network hardware.
Microsoft 365, Base64 encoding and log analysis — plus future tools for Docker, Linux, monitoring, NAS/storage and virtualization.
Manage IT devices, assets, IMEIs, serial numbers, warranties and handover protocols.
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