NAT
The process of translating private network addresses into a public one, allowing multiple devices to access the internet via a single address.
What does it mean NAT?
NAT (Network Address Translation) allows all devices in a company to access the internet through one or a few public addresses.
A side effect of NAT is that devices from the internet are not directly reachable, which acts as a basic but insufficient level of protection.
When an internal service must be reachable from the outside, port forwarding is used but only in conjunction with firewall rules and monitoring.
Practical examples
A company has one public address; the VPN is reachable via port forwarding, while all other internal systems are not visible from the internet.
Business relevance
Understanding NAT is important when setting up VPNs, video conferences, and partner connections, where misconfiguration often causes issues.
Common mistakes
The most common mistake is port forwarding to an internal server without restrictions and without logging this is a frequent entry point for attackers.
How VitalIT helps
At VitalIT, we design, implement, and maintain business networks segmentation, Wi-Fi, VPN, and firewalls. Learn more on the IT infrastructure page.
Why is this important for businesses?
Understanding NAT is important when setting up VPNs, video conferences, and partner connections, where misconfiguration often causes issues.
Where does this appear in practice?
A company has one public address; the VPN is reachable via port forwarding, while all other internal systems are not visible from the internet.
Most common problems or errors
The most common mistake is port forwarding to an internal server without restrictions and without logging this is a frequent entry point for attackers.
Kako pri tem pomaga VitalIT
At VitalIT, we design, implement, and maintain business networks segmentation, Wi-Fi, VPN, and firewalls. Learn more on the [IT infrastructure](/en/services/it-infrastruktura) page.
Related terms
Related Services
Frequently asked questions
- Does NAT replace a firewall?
- No. NAT hides addresses but does not filter content or access.
- Why does the VPN not work over NAT?
- Often due to overlapping address ranges or blocked ports.
- How many public addresses do we need?
- For most small businesses, one fixed public address is sufficient.