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What kind of router/firewall do you have? This is going to be the best place to start depending on the model you have.<br />
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Most firewalls have ways that you can track the usage and check the logs.
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What kind of router/firewall do you have? This is going to be the best place to start depending on the model you have.

Most firewalls have ways that you can track the usage and check the logs.

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2900 series switches, asa 5505
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+1 for the Dude<br />
Very nice software once get passed the network mapping (graph)
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+1 for the Dude
Very nice software once get passed the network mapping (graph)

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Is there a tool (free) that can help identify causes of network slowness, where we can analyze traffic and see maybe if there are anything rouge on the network or certain user perhaps downloading too much etc?
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Is there a tool (free) that can help identify causes of network slowness, where we can analyze traffic and see maybe if there are anything rouge on the network or certain user perhaps downloading too much etc?

identifying network slowness

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Switches / Hubs

Network Operations includes asset management, help-desk supervision, security and user policies, infrastructure administration and anything else that affects the operation of your network. Discussions will include those of best practices in platforms, configurations, performance, security and accounting.

Network Operations

Paessler AG’s award winning PRTG Network Monitor is a powerful, affordable and easy-to-use Unified Monitoring solution. It is a highly flexible and generic software for monitoring IT infrastructure, already in use at enterprises and organizations of all sizes and industries. Over 150,000 IT administrators in more than 170 countries rely on PRTG and gain peace of mind, confidence and convenience. Founded in 1997 and based in Nuremberg, Germany, Paessler AG remains a privately held company that is recognized as both a member of the Cisco Solution Partner Program and a VMware Technology Alliance Partner.

Paessler

Productivity software is application software dedicated to producing information, such as documents, presentations, worksheets, databases, charts, graphs, digital paintings, electronic music and digital video. Most common programs and suites such as Microsoft Office and LibreOffice have their own topics. Office suites, which brought word processing, spreadsheet, and relational database programs to the desktop in the 1980s, are the core example of productivity software, but they can include communications software, personal information managers, groupware and log analysis software.