VPS network layers & addressing
Understand guest and provider networking, assigned addresses, recovery access and the checks needed before a network change.
Do I need to check both the VPS firewall and the provider firewall?
Trace VPS connectivity through provider and guest firewall layers, identify the actual listener, and preserve a working recovery path.
Read the answer VPS network layers & addressingWhy is my VPS’s guest IP different from its public connection address?
Understand directly assigned, private and NAT-mapped VPS addresses, compare guest routes with service details, and use the correct public endpoint.
Read the answer VPS network layers & addressingCan I move a VPS IP address to another instance for failover?
Plan a supported VPS floating-IP or address-move operation, verify application readiness and routing, and avoid assuming every IP is portable.
Read the answer VPS network layers & addressingHow do I check IPv6 on a VPS?
Verify a VPS IPv6 allocation, guest address, route and service listener, then test from an IPv6-capable Windows network.
Read the answer VPS network layers & addressingHow do I check or request reverse DNS for my VPS IP?
Check a VPS IP’s PTR record, compare forward DNS, and use the permitted Britixo reverse-DNS control for the actual allocated address.
Read the answer VPS network layers & addressingShould my VPS use DHCP or a static IP configuration?
Use the network method assigned to your VPS image and platform, inspect the active guest configuration, and avoid replacing working routes blindly.
Read the answer VPS network layers & addressingHow do I recover a VPS after a network configuration change?
Use an authorised VPS console to inspect a lost guest route, correct only the identified network change, and verify both temporary and persistent recovery.
Read the answer VPS network layers & addressingCan an MTU problem make a VPS connection partly work?
Investigate VPS MTU and path-MTU symptoms with bounded diagnostics, especially after tunnels or private networks, without guessing interface values.
Read the answer VPS network layers & addressingWhy is a VPS port unreachable even when the guest firewall allows it?
Investigate provider-side port restrictions, missing listeners and null routes, using a specific authorised endpoint rather than broad port scanning.
Read the answer VPS network layers & addressingHow can two VPS instances communicate privately?
Plan supported private VPS networking or an approved encrypted overlay, verify routing and peer identity, and restrict service exposure.
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