[riot-notifications] [RIOT-OS/RIOT] sys/net/application_layer: add telnet server module & example (#16723)

Koen Zandberg notifications at github.com
Tue Sep 28 10:35:32 CEST 2021

@benpicco How about an IP-based filter/firewall? If it by default only allows connections from the link local addresses and from the local subnet configured on the interfaces it would already be a lot more secure by default. It would at least prevent access from the rest of the internet.

It might make sense to add a configurable setting to specify the number of bits from the configured IP address to use for the match, in case you have the subnet autoconfiguration and want to allow access from the whole /56 (or something along these lines)

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