Linx
Chapter 1: Hardware
StrideLinx Router Connectivity Requirements for Local IT
The StrideLinx VPN router allows the user to connect to remote industrial controls
equipment from Ethernet, Wi-Fi, or cellular network connections. The remote user may
fully operate and monitor the local control system and affect the function and control of
the application just as the local operator controls it. Proper Control, Security and Safety
Procedures should be considered and implemented when utilizing the remote access feature.
See Appendix C for an overview of security and safety considerations, and see Appendix E for
a more detailed look at StrideLinx network security.
How does the StrideLinx router connect? (ports, protocols & servers)
The StrideLinx router uses outgoing ports to establish a secure connection to the StrideLinx
Cloud. This means there is no need to open any incoming ports in your firewall.
How to grant the StrideLinx router access?
Easy method: automatic updates
You may create an exception in your firewall for the domain name and ports & protocols,
mentioned below, to grant the StrideLinx router the access it needs.
With time, some servers may be removed or added to benefit the service. We try to keep these
changes to a minimum.
If we add a server, we simply add a DNS record. Your firewall will re-check the domain once
the TTL expires. Within an hour your firewall will be up-to-date and allow traffic to the new
IP address.
Likewise, if we remove a server, we will remove its DNS record, and your firewall will block
any traffic to this IP address.
Alternative method: manual updates
You can execute a DNS lookup (nslookup) request at the domain name mentioned below, to
get an IP list of all servers currently required by the StrideLinx solution. You can then create
exceptions to these IP addresses, in combination with the ports and protocols mentioned
below, to grant the StrideLinx router the access it needs.
With time, some servers may be removed or added to benefit the service. We try to keep these
changes to a minimum.
Please keep your firewall rules/exceptions up to date by periodically performing a DNS lookup
and checking for changes to maintain optimal remote service accessibility.
StrideLinx™ Cloud 2.0 Industrial VPN Routers User Manual
1st Edition Rev. C
1-19
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