Posts tagged "networking"
TL;DR: If you experience poor network performance on your wireless notebook, Microsoft may be using your device as a download server without your consent. Problem : I noticed a high number of requests between Windows clients in different network zones on a customer's firewall. It appeared that almost every client w...
Problem: After an update of a server to Devuan4/Debian11 the switch shuts down the interfaces to the server with status "dcxNoACKi" 48 minutes after the reboot. Discussion: the switch is a Cisco Nexus 5000 switch. It implements "Data Center Bridging Capability Exchange (DCBX)". The server is a Dell server with X710 C...
Some protocols need more than one TCP or UDP connection. For NAT to work the firewall needs to open additional ports to allow client-server connections automatically. Examples are FTP (port 21 handshake, additional ports for data), PPTP (port 1723 for handshake, proto GRE 47 for payload) Since Linux kernel (~) 4.7 th...
Discussion: Every routing protocol has a default distance to help the router to decide which route to use in case of multiple routes for the same destination. For Mikrotik routers these distances are listed here: https://wiki.mikrotik.com/wiki/Manual:Route_Selection_Algorithm_in_RouterOS If you want to configure a b...