Sniffer, Spoofer & Portscanner

It's not necessarily an evil intention behind these actions: it's fully legit to check your own network for possible vulnerabilities. Maybe some intruder is already inside? Or there's some service running that shouldn't be? Did the admin forget to close some port in the firewall?

From scanning foreign networks without explicit permission you should refrain, though. Not only this could trigger some (false?) alert (as nobody would have expected your action), but also could have legal consequences. Oh: and don´t forget to be aware of „sniffers“ riding piggy-back on the apps (ad/analytics modules calling home)

In case those words don't mean anything to you, some short explanations:

Sniffing: intercept and log traffic passing over a digital network
Spoofing: pretend to be someone/something different than you are (masquerade as another by falsifying data)
Portscan: Looking for the "open barn door" (which ports are open?)

Network Sniffer

2020-02-09

Postern (4.3@5,600) 4 $Contains no known trackers \o/$
HttpCanary — HTTP Sniffer/Capture/Analysis (4.3@1,390) 8 $Contains no known trackers \o/$ / HttpCanary (Premium) (3.4@272; ~EUR 4.50) 7 $Contains no known trackers \o/$ User Manual
Debug Proxy (4.1@333) Ǥ 7 LastUpdate: 2018-01-06 transparent proxy
Sniffer Wicap 2 Demo (4@1,757) Ǥ 13 $Contains no known trackers \o/$ / Sniffer Wicap 2 Pro (4.4@246; ~EUR 14.00) Ǥ 13
Packet Capture (3.9@3,982) Ǥ 7
Sniffer Proxymon [ROOT] (3.9@294) Ǥ 8 $Contains no known trackers \o/$ transparent proxy
TestelDroid (3.6@16) 7 $Contains no known trackers \o/$ LastUpdate: 2017-03-27
tPacketCapture (3@1,209) 3 $Contains no known trackers \o/$ LastUpdate: 2015-02-06 / tPacketCapture Pro (3.9@37; ~EUR 10.00) 3 LastUpdate: 2015-02-06
RRCpacketSniffer (2.4@11) 3 LastUpdate: 2015-11-30
PCAPdroid - PCAP dump without root (0@0) 2 $Contains no known trackers \o/$ Github
NetCloud (0@0) 4 $Contains no known trackers \o/$ Github; proxy and package capturer
k3pler (0@0) 2 $Contains no known trackers \o/$ Github; network connection blocker and packet analyzer

Network Spoofer

2020-02-09

Device ID Masker Free [Xposed] (4.2@24) 7 LastUpdate: 2018-06-13 / Device ID Masker Pro [Xposed] (Non Root Support) (3.8@214; ~EUR 2.75) Ǥ 7 requires XPosed framework
Device Emulator (4.1@566) 6 LastUpdate: 2018-02-07 requires XPosed framework
MACCHANGER MEDIATEK (4@12) 7 LastUpdate: 2016-06-28
Wi-Fi Privacy Police (3.9@1,204) 5 $Contains no known trackers \o/$ LastUpdate: 2016-10-08 Github; Vorstellung 1/2015; protects against WiFi tracking
Wifi Mac Changer (3.8@9,127) 5
MacSpoofer ALPHA version (3.8@274) 4 $Contains no known trackers \o/$ LastUpdate: 2013-12-26
[root] Pry-Fi (3.7@6,753) Ǥ 10 $Contains no known trackers \o/$ LastUpdate: 2014-02-17 Vorstellung 2/2014; Intro 2/2014; Test 3/2014; protects against being WiFi-sniffed
Change My Mac Lite (3.7@930) Ǥ 10 / Change My MAC - Spoof Wifi MAC (4.1@5,638) Ǥ 10
Device Info & ID Changer (3.7@116) Ǥ 14 LastUpdate: 2017-07-02 IMEI, AndroidID, MACs
Device Id IMEI Changer Xposed (3.6@2,191) 8 LastUpdate: 2017-03-18 change IDs shown to current WiFi
WiFi Spoofer (3.1@500) 3 LastUpdate: 2015-08-10
Ghost Phone (2.9@734) 4 LastUpdate: 2018-01-12 MediaTek IMEI/MAC changer
Network Ghost (0@0) 3 $Contains no known trackers \o/$ LastUpdate: 2016-09-01 Github; randomize MAC addresses

Port Scanner

2020-02-10

Port Authority - LAN Host Discovery & Port Scanner (4.6@605) 4 $Contains no known trackers \o/$ / Port Authority (0@0) 3 $Contains no known trackers \o/$ LastUpdate: 2018-03-31 Github
Network Scanner (4.5@7,124) Ǥ 10
PortDroid - Network Analysis Kit & Port Scanner (4.5@816) Ǥ 8
Network Scanner (4.4@15,922) Ǥ 9
NetX Network Tools (4.4@8,040) 12
Network IP Scanner (4.4@2,404) Ǥ 7
Network Tools Library Sample (4.4@18) 1 Github; ping, WOL, portscan
Net Scan (4.3@7,996) Ǥ 8
Network Mapper (4.3@256; ~EUR 1.25) 7 $Contains no known trackers \o/$ LastUpdate: 2018-01-13
Network Tool (4.3@116) Ǥ 5 LastUpdate: 2018-07-05
SharesFinder (4.2@1,187) 5 $Contains no known trackers \o/$ LastUpdate: 2013-07-20 scanning wireless local networks for shared resources (SMB, FTP, HTTP) and accessing them
Angry Port Scanner (4@650) Ǥ 6 LastUpdate: 2018-03-25
Port Scanner (3.9@1,438) 4 LastUpdate: 2018-02-10 / Port Scanner Donate (4@10; ~EUR 3.00) 4 $Contains no known trackers \o/$ LastUpdate: 2018-02-10
DanPortScan (Net Port Scanner) (3.9@7) 1 LastUpdate: 2017-03-30
CCTV Port Scanner (3.8@667) Ǥ 5
Port Scanner (3.8@77) 2 LastUpdate: 2016-08-29
NDroidMap (3.8@72) 4 $Contains no known trackers \o/$ LastUpdate: 2018-02-28 NMap frontend
NetMon: Network Scanner & Port Monitor (3/4G/WiFi) (3.8@20) 5
UDP Port Scanner Beta (3.6@160) 3 LastUpdate: 2016-08-02
devolo NetScanner (3.3@190) 6 LastUpdate: 2018-03-13
Port Scanner (3.3@15) 2 LastUpdate: 2016-08-13
TCP Port Scanner (3@8) 3 $Contains no known trackers \o/$ LastUpdate: 2018-01-13

Protection agains WiFi attacks

2020-02-21

ARP Guard (WiFi Security) (4.5@8,091) Ǥ 13
wifi security protection network security arp (4.3@813) 11
WiFi ARP Guard (4.2@203) 5 LastUpdate: 2017-05-16
WiFiGuard (3.8@224) 4 $Contains no known trackers \o/$ LastUpdate: 2014-09-15
ARP Security (3.5@8) 4 $Contains no known trackers \o/$ LastUpdate: 2015-06-06
Pixel NetCut Defender - wifi security (3.3@342) 3
NetCut (0@44) Ǥ 9

Further Readings:

App Verbindungen mitschneiden auf Android und iOS (4/2016)
Security and Hacking apps for Android devices (9/2013)

2020-02-24

IzzyOnDroid