NetPorta goes through your switches and firewalls and builds a map of your network down to individual ports. For every device you see its IP and MAC address, where and when it was connected and when its warranty ends. It runs in your network, only reads from devices and sends nothing to the cloud.
NetPorta shows them what is plugged in where, keeps an eye on warranties and licences and warns them of a problem before your staff start dealing with it. Less searching, faster fixes and network documentation that nobody has to write by hand.
Your whole network in one place – without spreadsheets nobody keeps up to date.
3.1Network map down to portsSwitches, the links between them (LLDP/CDP, from the controller for UniFi), what is on every port, speed, link status and PoE. Port aggregations are drawn as one link; you can save map views.
3.2Port healthWarns about half duplex, a port that dropped from 1 Gb/s to 10/100 Mb/s (typically a faulty cable), frequent speed changes, CRC errors and incomplete aggregation.
3.3End devices and historyMAC and IP address, name, vendor, switch and port. The timeline shows when a device connected, disconnected or moved, and you are alerted to new unknown devices.
3.4InventoryCategory, owner, OS, purchase date and notes. An optional Windows agent reports PC details by itself.
3.5Servers and Wi-FiServers with several network cards, iDRAC/iLO, FC and SAS connections to disk arrays and tape libraries. Wi-Fi clients on UniFi and Zyxel access points.
3.6Printers and storage (NAS)Printer status and toner levels. NEW in 1.7.0: QNAP and Synology – disks, RAID, volume usage, temperatures, UPS – with alerts for a failing disk or degraded RAID.
3.7Warranties and licencesWarranties and licences of devices and software in one place, including FortiGate licences. An e-mail arrives 180, 30 and 7 days ahead and on the day they end.
3.8Alerts and integrationsOutages of switches, APs and firewalls, a log of all events, syslog to your server, e-mail via Microsoft 365 or SMTP and a ready-made Zabbix template.
3.9Multiple branchesEvery branch has its own NetPorta; headquarters (Main) sees all of them in one overview. NEW in 1.7.0: a branch without a public IP connects by itself over VPN (IPsec, WireGuard, OpenVPN).
3.10Accounts and languagesAdministrator / inventory / read-only roles, two-factor authentication (TOTP). Interface in Czech, English, German, Italian and Spanish.
§ 4 Screenshots
Screenshots
Real NetPorta 1.7.1 screens from a sample branch with made-up data.
Port list
All ports with search and filters.
End devices
MAC, IP, name, vendor and where the device is connected.
Printers
Status, errors, page counter and toner levels.
Storage (NAS)
Disks with SMART, RAID and volume usage, with alerts.
Problems
Outages, port health and other alerts in one place.
Warranties and licences
What ends when, with an e-mail reminder in advance.
Fig. 2 — Dark modeFor monitoring screens and evening work
The same map in dark mode.
§ 5 What is read automatically and what you add
What is read automatically and what you add
NetPorta finds most information in the devices itself. Some things, however, are not stored anywhere in the network – you add them by hand and NetPorta keeps them.
Read automatically
switches, their ports and links
devices on ports: MAC and IP address, name, vendor
connection history and moves between ports
Wi-Fi clients on supported access points
printer and storage (NAS) status, FortiGate licences
Added by you
location: building, floor, rack
clear names and notes, device owners
warranties and licences the device does not report
unmanaged switches and equipment without SNMP
categories where they cannot be detected, and a check of the map layout
To be honest
NetPorta is not perfect. Even though I try, not all information and maps come together automatically – it depends on what the devices provide. It is a tool that makes network documentation much easier, but human input is still needed: a check and additions at the start, then regular reviews and updates of the details you entered by hand.
NetPorta runs as a virtual machine or on a mini PC right in your network.
1
Install NetPorta
An OVA image for VMware and Proxmox or VHDX for Hyper-V, or on a mini PC. It runs on Debian 13.
2
Enter read-only credentials
SNMP (v1/v2c/v3), SSH limited to a fixed list of “show” commands, or an API (UniFi, FortiGate). It never changes device configuration.
3
Your data stays with you
NetPorta sends no data about your network anywhere. Only what you set up goes out (e-mail, syslog, Zabbix), plus the licence check – just the licence key, installation ID, version and an encrypted machine fingerprint, no network data.
4
Signed updates
A new version is a signed package you upload in Settings. NetPorta rejects unsigned or modified packages; branches download it from Main.
§ 7 Who NetPorta is for
Who NetPorta is for
For networks with 5 to 50 switches per branch.
IT companies and network administrators
Do you manage customers' networks as an outsourced service? For each of them you have an up-to-date map and inventory before you even arrive.
Smaller companies
You want an overview of your own IT: what is plugged in where, who owns what and what expires when.
Companies with branches
Headquarters sees every branch in one overview; the branches update themselves.
§ 8 Licences
Licences
Licences with prepaid updates. When the updates end, NetPorta keeps running with everything it can do – it just gets no new versions.
One network – do it yourselfCZK 1,000introductory price · 1 year of updates
One branch, all features. Installation following the guides. Normally from CZK 3,000, founder licence CZK 10,000.
One network – turnkeyCZK 10,000introductory price · licence for 1 year included
I install it, connect your devices, fill in the data and train you (1 firewall, up to 48 ports, up to 50 devices). Normally from CZK 13,000.
Multiple networks – do it yourselfCZK 1,500Main · introductory price · 1 year + CZK 500 per branch
Headquarters and branches in one overview. Normally CZK 4,500 + CZK 1,000 per branch.
Multiple networks – turnkeyby agreementdepending on scope
Rollout of headquarters and branches according to your needs. Write to me.
I am not a VAT payer; prices are final.
All prices, periods and extras
The detailed price list with introductory prices, the founder licence and the free trial.
I wrote NetPorta for myself: as a system administrator (the “IT person for everything”) I needed an overview of my customers' networks and devices. I added features step by step, based on what I needed in my own work.
NetPorta only reads from devices (SNMP, SSH with “show” commands only, APIs) and never changes their configuration. It runs in your network and sends network data nowhere – only the licence is verified over the internet.
Which devices does NetPorta support?
Tested on real networks with Fortinet, Zyxel, Cisco, UniFi and Dell PowerConnect. For other vendors it depends on what the device provides over SNMP.
Ports, devices, links, history, Wi-Fi clients and printer and NAS status, yes. Location, owners, warranties and equipment without SNMP are added by hand, and the map needs a check.
What will NetPorta run on?
NetPorta runs on almost anything: a virtual machine with 1 CPU, 1–2 GB of memory and a 10 GB disk is enough (Proxmox, VMware ESXi, Hyper-V, VirtualBox), or an older computer or a mini PC. For the headquarters (Main) with several branches I recommend 2 CPUs and 4 GB of memory.
You download the new version as a signed package in the customer area and upload it in Settings. Branches download the update from Main by themselves.
What if I stop paying for updates?
NetPorta keeps running with everything it can do; it just gets no new versions. You can extend updates at any time.
Does NetPorta need the internet?
The licence is verified over the internet (HTTPS to smiratech.cz), at least once every 30 days. For networks without internet access I issue the licence as a file.
How many switches can it handle?
It is designed mainly for networks with 5 to 50 switches per branch. With a full licence the number of devices is limited only by the hardware. Tested with up to 50 switches per branch; it handles more.
My device is not on the list.
Send me the vendor and model. If the device provides the necessary data, I will add support. Write to napady@smiratech.cz – other ideas for improving NetPorta are welcome too.
Can I try NetPorta first?
Yes, in two ways: the live demo right in your browser (demo.smiratech.cz, no installation) and the 30-day free trial for your e-mail (3 devices (at most 1 of them a firewall), 20 inventory items).
Do prices include VAT?
I am not a VAT payer; prices are final.
Where can I find guides?
Short guides – how to read the map, add a switch, handle devices without SNMP and more – are on the Guides page.
