Network & telephony
Port forwarding & external access
Reachable from outside, but only under control
What this is about
Anyone who makes their own services reachable from outside needs more than a forward in the router. We set up the access, secure it and make sure it keeps working after an IP address change.
What is included
- Forwards in the router or firewall
- Handling changing IP addresses with dynamic DNS
- Encryption with a valid certificate
- Restricting access to known networks where possible
- A watchdog that checks reachability from outside
Process
How we go about it.
Clarify the need
Which service really has to be reachable from outside?
Set up
Forwarding, name resolution and encryption.
Secure
Limit access and enable logging.
Monitor
Regular checks from outside.
Frequent questions
This is what we are often asked.
What is dynamic DNS?
Your internet connection usually gets a new address every day. Dynamic DNS makes sure a fixed name always leads to the right connection anyway.
Isn't that insecure?
Only if it is done badly. Encryption, individual accounts and restrictions make the difference.
Can you also set this up for an existing installation?
Yes. We first check what is already open, which is usually more than the business knows.
Sollen wir uns das ansehen?
Ein kurzes Gespräch genügt, um einzuschätzen, was in Ihrem Betrieb sinnvoll ist — und was nicht.