Fedora 33 - make DNS (systemd-resolved) working with NetworkManager's ForitSSL VPN connections

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In Fedora 33 there is a systemd-resolved service enabled by default. Use following steps to make DSN working after establishing FortiSSL VPN connection using Network Manager (using NetworkManager-fortisslvpn-gnome plugin). Assuming that "ppp0" is you virtual network interface for VPN connection, you can set X.X.X.X and Y.Y.Y.Y as DNS servers: resolvectl dns ppp0 X.X.X.X Y.Y.Y.Y Add… Continue reading Fedora 33 - make DNS (systemd-resolved) working with NetworkManager's ForitSSL VPN connections

Working with kernel network namespaces created by Docker

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To work with kernel network namespaces created by Docker create necessary symbolic link: ln -s /var/run/docker/netns  /var/run/netns List network namespaces: ip netns list Result will be similar to: # ip netns list 644c14147ad2 (id: 2) bb230cf5f65f (id: 1) e2772d19bfd0 (id: 0) Execute command inside network namespace: ip netns exec <namespace> <command> Example - listing network… Continue reading Working with kernel network namespaces created by Docker

OpenWRT - various useful commands

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Various useful commands for OpenWRT/LEDE devices: Show ethernet switch information: swconfig list swconfig dev switch0 show Updating packages: opkg update opkg list-upgradable opkg list-upgradable | awk '{ print $1 }' | xargs opkg upgrade Installing OpenVPN (with Easy-RSA) software: opkg install openvpn opkg install openvpn-easy-rsa Installing DynamicDNS client (with HTTPS nad LuCI support): opkg install… Continue reading OpenWRT - various useful commands

Linux - reload Intel wireless card kernel module

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Use lspci for displaying information about PCI buses in the system and devices connected to them, to get information about kernel modules being used: # lspci -nnk 04:00.0 Network controller [0280]: Intel Corporation Wireless 8260 [8086:24f3] (rev 3a)     Subsystem: Intel Corporation Device [8086:0130]     Kernel driver in use: iwlwifi     Kernel… Continue reading Linux - reload Intel wireless card kernel module