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Servers: VPS/VDS and dedicated
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Providers: Hetzner
Providers: Contabo
Linux: access, administration, security
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Networking and Diagnostics (Linux)
IPTables Configuration: Rules and ExamplesChanging MTU on Windows and LinuxWorking with TCPDump: basics and filtersMeasuring Network Speed in Linux with Speedtest CLIDNS error “Temporary failure resolving…”: how to fix itHow to Collect Network Traceroute on Linux and WindowsMonitoring Network Traffic with VnStatWindows: Access, Administration, Networking
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Game Hosting: Minecraft
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Blocked Ports (VPS/VDS)
To ensure security, a number of ports commonly used by attackers are blocked on all virtual servers (VPS/VDS).
Inbound and outbound traffic is restricted for TCP/UDP ports 17, 111, 135, 137, 138, 139, 389, 427, 445, 520, 1900, 3702, 11211
Outbound traffic is restricted for TCP/UDP ports 25, 465
Unblocking Ports 25 and 465
These ports can be unblocked upon request. To do this, please contact our support team. Please note that each request is reviewed on an individual basis, and our staff reserve the right to request verification.