From 77846df2994e3e8fca2caf99d1c241f6277407bb Mon Sep 17 00:00:00 2001 From: jokob-sk Date: Sat, 19 Oct 2024 08:49:31 +1100 Subject: [PATCH] =?UTF-8?q?=F0=9F=93=9ADocs:=20Notes=20On=20WiFi=20Extende?= =?UTF-8?q?rs=20#852?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- docs/SUBNETS.md | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/docs/SUBNETS.md b/docs/SUBNETS.md index ee49cb4a..ae509a17 100755 --- a/docs/SUBNETS.md +++ b/docs/SUBNETS.md @@ -110,3 +110,21 @@ Please note the accessibility of macvlans when configured on the same computer. - NetAlertX does not detect the macvlan container when it is running on the same computer. - NetAlertX recognizes the macvlan container when it is running on a different computer. + + +### Wi-Fi Extenders + +A Wi-Fi extender typically works by creating a separate network or subnet, which can cause certain network scanning tools, like `arp-scan`, to be unable to detect devices behind the extender. + +This happens because `arp-scan` uses ARP (Address Resolution Protocol) to map IP addresses to MAC addresses on the local network. Since ARP is a Layer 2 (data link layer) protocol, it usually only works within a single broadcast domain, which is typically limited to a single router or network segment. + +When you introduce a Wi-Fi extender, it may isolate devices on different segments of the network, meaning ARP packets cannot easily traverse from one segment (your main network) to another (the network behind the extender). + +To scan devices behind the extender, you can try: + +- Scanning the specific subnet that the extender uses, if it is separate from the main network. +- Using [supplementing plugins](https://github.com/jokob-sk/NetAlertX/blob/main/front/plugins/README.md) that use alternate methods. Protocols used by the `SNMPDSC` or `DHCPLSS` plugins have good support and usually can be used as a workaround. + +Check the [plugins list](https://github.com/jokob-sk/NetAlertX/blob/main/front/plugins/README.md) to find a plugin supported by your router and your network setup. + +