(MRTG (multiroutertrafficgrapher) is a free software for monitoring network traffic load. At present, various statistical systems have been developed using MRTG: 1. system resource load statistics, such as disk space, CPU load, memory usage, etc. 2. Server traffic statistics, such as mail, DNS, web, BBS, IRC, etc. 3. network device traffic statistics, such as firewall, router, switch, etc. 4. alternative statistics, For example: modem traffic, number of logins, number of online games, etc.)