As soon as the test device starts using network, router will forward all upstream and downstream test device packets to a monitoring workstation. First we need to connect another machine (monitoring workstation) with monitoring software (Wireshark) to the same network and set up the router for traffic mirroring. In this case we have a test device connected to a router with network access. If it doesn’t work, just restart the router. Let’s load it by running: modprobe xt_TEE. Check if package installed successfully: opkg list-installed | grep "mod-tee"Ī quick word of caution: iptables-mod-tee is a kernel module and it should be loaded before we try to use it.Install iptables-mod-tee package: opkg install iptables-mod-tee.Add SSH public key for passwordless authentication: opkg update SSH to the router and update the list of available packages.We are using TP-Link AC1750 (Archer C7) with 14.07 Barrier Breaker, but you can use another compatible router (see full list here). Router setupįirst we need to configure our router running OpenWrt firmware. This example will show you how to capture mobile device traffic to a host computer with Wireshark. When it is necessary to monitor mobile device traffic and capture network traces with Wireshark, iptables-mod-tee library allows network router to mirror all traffic from a specific Client (for example, a mobile device) to another host. This technique is useful for testing how applications are communicating between themselves or remote devices without interfering with device itself. Today we want to advance this topic further with useful information on traffic mirroring to Wireshark. In that blog post we shared our knowledge on how to set up specific network conditions using built-in tools in your web browsers or operating systems and explained a more sophisticated solution based on a router. Last month we published a blog post about setting up specific network conditions for software testing.
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