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Author: Toshiaki Makita
NTT Open Source Software Center
Category Archives: Networks
How to add static routes in Windows
Let’s say we have a network with the following data:
Continue reading “How to add static routes in Windows”NAT Modules for VPN, FTP, SIP
Let’s say SNAT or masquerading is configured on a Linux server, for example, as I described in article Ubuntu IP Masquerading (NAT). But if many NAT clients connect to external PPTP, FTP, SIP servers for NAT, then they will have connection problems.
Continue reading “NAT Modules for VPN, FTP, SIP”Installing and using ipt_NETFLOW
ipt_NETFLOW – fast NetFlow traffic sensor, consists of a kernel module and iptables, supports NetFlow v5, v9, v10(IPFIX).
Continue reading “Installing and using ipt_NETFLOW”Installing and using Nfsen
Nfsen is an open-source Netflow collector and analyzer that displays statistics in a web interface in the form of graphs.
Continue reading “Installing and using Nfsen”Installing and using Nfdump
Nfdump is a collection of tools for collecting and processing netflow data.
Continue reading “Installing and using Nfdump”Installing and configuring PPTPd server
Below I will describe how pptpd is installed and configured. On the test I will install in Ubuntu Server 18.04.
Continue reading “Installing and configuring PPTPd server”Installing and configuring fprobe
On the test, I will install the fprobe sensor, which will collect statistics from network interfaces and transmit it to the collector.
Continue reading “Installing and configuring fprobe”Installing and using Speedtest CLI
In this article, I will give an example of installing and running the Speedtest CLI.
Continue reading “Installing and using Speedtest CLI”Solution for Speedtest CLI error “Failed to find a working test server”
Once, when running the Speedtest CLI on one Linux server, I noticed the following error:
Continue reading “Solution for Speedtest CLI error “Failed to find a working test server””