Network monitor Tool

Hi all

Current network of my company, the included router switch (cisco 3750)--> intermediate switch (cisco 3560)--> access--> computers/devices switch

on more than 600 computers using IP via DHCP Server. I want to follow the network if there is an unauthorized computer/device to connect to the network.

Could you please tell me what software to monitor the good on this network system?

Best regards

nocandcan

NMS = network management system. Not a product itself but a type of product.

Regarding your original question - it depends. Many products can monitor what devices are connected to your switches.

The big question is how can you decide which ones are allowed? They need to provide authentication (for example using 802.1 x)? How can you account for printers and other peripherals without a supplicant 802. 1 x - MAC Authentication Bypass (MAB) is the Cisco solution.

Whatever the technical solution that you choose to apply your policy, they generally have their own management (such as Cisco ISE) tool or can generate a minimum syslog messages (like the basic 802.1 x).

You can send off syslog messages to something as simple as a server syslog on Linux (free to buy, requires the most work and know-how to use) or a more complete product (increased costs according to how much they do and the size of your network is).

A popular tool for syslog management is Kiwi Syslog. It is available in a limited freeware version or a version licensed by SolarWinds. (Link) If you move up to the more expensive SolarWinds Network Performance Monitor (NPM) it also includes a more complete syslog Viewer.

Tags: Cisco Network

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