With the launch of Garland Technology’s new FieldTAP, one of the perks I can boast about is getting to test and use new technology. Especially working remotely, I was excited to have such a versatile TAP to add to my gear. With the new circumstance we all find ourselves in, this came in handy as we are finding an influx of remote performance issues around the industry and the need to quickly solve any issues.
Debugging and troubleshooting performance and operational issues in a Wi-Fi Access Point or VoIP phone deployment often involves taking packet captures of the device’s network traffic using Wireshark.
A SPAN port on a switch is often used to connect a laptop computer or PC to perform the Wireshark packet capture. But obtaining access and or control to configure a SPAN port on a switch can present challenges. LAN switches may not be accessible as they are in secure locations, knowledge to make the SPAN port configuration might not be in-house or available, and switch login credentials might not be known, all leading to delayed problem resolution and disconnected users.
Garland introduced the FieldTAP product line to simplify the process of collecting Wireshark PCAP files and eliminate the complexity and need to configure switch SPAN ports. The Garland FieldTAP connects directly to the end device such as a Wi-Fi Access Point or VoIP phones allowing instant access to the needed packet level data to immediately start debugging leading to improved problem resolution and response time.

The new FieldTAP was specifically designed with a network engineer, network administrator, system
administrator, system engineer, network analyst, cybersecurity network defense specialist, NOC engineer, NOC analyst, or cable installer/tech in mind. This pocket sized portable TAP, which is a little bit larger than a credit card, is the eyes and ears to network analytics on the fly, anywhere, compatible with most computer OS’s, Windows 8+, Windows 10, Linux, Android, and MACs.
This was not designed not as a permanent TAP solution of course, but as a quick laptop or tablet solution with it’s USB 3.0 connection, easily enabling network aggregation without packet loss on the go. With no power supply needed, and it’s rugged steel casing, this TAP has quickly become a go-to item for troubleshooting flyaway kits.
Ideal applications for this are used in test labs, Network operations center (NOC), retail stores, medical hospital IoT networks, government, military, financial, media, cable network testing, wireless AP network testing, any virtual environment such as VMware environments, VOIP networks, network pen tests, and more.
You don’t lose the network card your laptop has as it’s plugged into the USB port, so you can use the network card to stay connected to your local network. This will allow you to copy PCAP files you’re capturing and store them elsewhere. Copy full duplex lossless link aggregation at speeds up to 5 Gbps, with no issue of collecting, no congestion of the flow of data, and of course no dropping frames.
Works with all of the latest network tools like Wireshark, Suricata, nTop, Molach, KALI, Microsoft Netmon, and more.

Two commonly used tools in debugging WiFi Access Point deployments are Microsoft Netmon and Wireshark. Wireshark provides visibility into packet level data such at Layer 2 Ethernet headers and Layer 3 IP datagrams. Netmon goes a step further and can provide information related to WiFi connections.
Voice over IP (VoIP) has quickly replaced legacy circuit switched PSTN telephony which delivered consistently high voice quality. VoIP telephony is subject to latency, jitter, and packet loss which can all lead to poor voice quality.
Having hands-on experience with this portable, miniature tap has opened up a whole new point of view for me as a solutions engineer and self-described network geek. Being able to easily test, analyze, and have resourceful ways to simply TAP into any segment, VOIP, VMware, Wireless APs in our office will really help me address and optimize any performance issues we may face in the coming months.
Try a FieldTAP for yourself or your team. Have a unique environment that needs visibility, but are having connectivity or architecture issues? Book a brief Design-IT Demo with our engineering team today and we'll work it out together. No obligation - it’s what we love to do.
If the inline security tool goes off-line, the TAP will bypass the tool and automatically keep the link flowing. The Bypass TAP does this by sending heartbeat packets to the inline security tool. As long as the inline security tool is on-line, the heartbeat packets will be returned to the TAP, and the link traffic will continue to flow through the inline security tool.
If the heartbeat packets are not returned to the TAP (indicating that the inline security tool has gone off-line), the TAP will automatically 'bypass' the inline security tool and keep the link traffic flowing. The TAP also removes the heartbeat packets before sending the network traffic back onto the critical link.
While the TAP is in bypass mode, it continues to send heartbeat packets out to the inline security tool so that once the tool is back on-line, it will begin returning the heartbeat packets back to the TAP indicating that the tool is ready to go back to work. The TAP will then direct the network traffic back through the inline security tool along with the heartbeat packets placing the tool back inline.
Some of you may have noticed a flaw in the logic behind this solution! You say, “What if the TAP should fail because it is also in-line? Then the link will also fail!” The TAP would now be considered a point of failure. That is a good catch – but in our blog on Bypass vs. Failsafe, I explained that if a TAP were to fail or lose power, it must provide failsafe protection to the link it is attached to. So our network TAP will go into Failsafe mode keeping the link flowing.
Single point of failure: a risk to an IT network if one part of the system brings down a larger part of the entire system.
Heartbeat packet: a soft detection technology that monitors the health of inline appliances. Read the heartbeat packet blog here.
Critical link: the connection between two or more network devices or appliances that if the connection fails then the network is disrupted.