Архивы Networks

Port forwarding in iptables on NAT server

Once I needed to forward a port to a VPN server that had a gray IP address and was behind NAT.

How to change gateway in Linux

Once I needed to change the default gateway on different servers without restarting the network service or rebooting the server, I will give examples of how I did this.

How to add a blackhole route in Netplan

I will give an example of setting up blackhole routes in Netplan.

“Pings drop out” on GPON ONU and defective power supplies

One day, several technical specialists who connect the Internet to users began to complain that there was no speed and ping requests “dropped out”.

iPerf Mulicast

I will show an example of running iPerf to test network bandwidth using UDP Multicast.

For example, I will configure the internal BGP protocol in Bird, in my case iBGP was needed in order to transfer user routes from several access servers to a NAT server. As access servers, I configured Accel-ppp (ipoe) and JuniperMX, they all worked simultaneously and balanced users by making an artificial DHCPOFFER delay.

Category Archives: Networks

Port forwarding in iptables on NAT server

How to change gateway in Linux

How to add a blackhole route in Netplan

“Pings drop out” on GPON ONU and defective power supplies

iPerf Mulicast

How to set up iBGP in Bird

Configuring Juniper MX and ABillS

Configuring OSPF in BIRD

Renaming Network Interfaces in Linux

Installing and configuring BIRD (BGP)