BASIC Tutorial: PCAPdroid & 3 other Android Apps for Network
Troubleshooting.
Presenter: *Ken Johnson*
<https://www.google.com/url?q=https://www.sluug.org/bio/Ken_Johnson.shtml&sa=D&source=calendar&usd=2&usg=AOvVaw3Y7dliU8ZyVNMlVs0QWfbt>
Network Troubleshooting with Android Apps
I will review four Android Apps that I have used for
Network Troubleshooting. I will present an overview of their features and
emphasize how I have used each. With a small bonus, time permitting.
(*PCAPdroid* is an *open-source *network monitoring app for Android that
allows users to inspect and analyze network traffic from other apps on
their device without root access. It can:
- capture and export network packets,
- decrypt *HTTPS/TLS traffic*
<https://www.google.com/url?q=https://www.google.com/search?rlz%3D1CATTSD_enUS1074%26cs%3D0%26sca_esv%3D2343f0def42fad25%26sxsrf%3DAE3TifOpR06XTSnf5LGyVgKIvHN4pQp5KA%253A1757385620231%26q%3DHTTPS%252FTLS%2Btraffic%26sa%3DX%26ved%3D2ahUKEwjmsoDN08qPAxVmjIkEHbNjBt0QxccNegQIBBAB%26mstk%3DAUtExfCnDF7F9JLMSBiiWl9Gd4JXV1bGqd5yJnojuUtyYMDPMoTq7nILNJRtmvNCW8y15BPeu388pGqhJzeESTDn1p13RgVkEUavj44XwIiiUiwTCWjgEckzxGVcdbeBYCMuldzVPnNPEgSseJQjIN3kTwUFRU_QU7Y8HaTgsKjg5B6mK60%26csui%3D3&sa=D&source=calendar&usd=2&usg=AOvVaw2egluAU2a-Y4mjeEsiQzEY>
,
- identify remote IPs, countries, and *ASNs*
<https://www.google.com/url?q=https://www.google.com/search?rlz%3D1CATTSD_enUS1074%26cs%3D0%26sca_esv%3D2343f0def42fad25%26sxsrf%3DAE3TifOpR06XTSnf5LGyVgKIvHN4pQp5KA%253A1757385620231%26q%3DASNs%26sa%3DX%26ved%3D2ahUKEwjmsoDN08qPAxVmjIkEHbNjBt0QxccNegQIBBAC%26mstk%3DAUtExfCnDF7F9JLMSBiiWl9Gd4JXV1bGqd5yJnojuUtyYMDPMoTq7nILNJRtmvNCW8y15BPeu388pGqhJzeESTDn1p13RgVkEUavj44XwIiiUiwTCWjgEckzxGVcdbeBYCMuldzVPnNPEgSseJQjIN3kTwUFRU_QU7Y8HaTgsKjg5B6mK60%26csui%3D3&sa=D&source=calendar&usd=2&usg=AOvVaw31x1KMkEe7SG5YWrxc1jvZ>
,
- block malicious hosts, and
- create firewall rules.
The app can also redirect connections to a *Socks 5 proxy*
<https://www.google.com/url?q=https://www.google.com/search?rlz%3D1CATTSD_enUS1074%26cs%3D0%26sca_esv%3D2343f0def42fad25%26sxsrf%3DAE3TifOpR06XTSnf5LGyVgKIvHN4pQp5KA%253A1757385620231%26q%3DSocks%2B5%2Bproxy%26sa%3DX%26ved%3D2ahUKEwjmsoDN08qPAxVmjIkEHbNjBt0QxccNegQIBRAB%26mstk%3DAUtExfCnDF7F9JLMSBiiWl9Gd4JXV1bGqd5yJnojuUtyYMDPMoTq7nILNJRtmvNCW8y15BPeu388pGqhJzeESTDn1p13RgVkEUavj44XwIiiUiwTCWjgEckzxGVcdbeBYCMuldzVPnNPEgSseJQjIN3kTwUFRU_QU7Y8HaTgsKjg5B6mK60%26csui%3D3&sa=D&source=calendar&usd=2&usg=AOvVaw2u4tMY30w3ZFm9gBoG-eqp>
and
has features like DNS query extraction and payload inspection. ...)
7:15pm
MAIN Topic: Network Time. NTP & Linux.
Doctor Stratum:
Or How I Learned to Stop Worrying and Love the Clock
Presenter: *Andrew Denner*
<https://www.google.com/url?q=http://localhost:4321/presenters/andrew-denner&sa=D&source=calendar&usd=2&usg=AOvVaw2JsbZAIu90PbWunnYx3GH2>
Ever had a server wake up thinking it's January 1st, 1970?
That's not just a bad hangover -- it's a recipe for:
broken certificates,
failed logins, and
confused applications.
In this talk, we'll explore
how Linux keeps time, from NTP and chrony to stratums, time zones, and
the infamous "watch problem."
Whether you're syncing with GPS, hardening
security, or just trying to keep your logs honest, you'll leave knowing
how to make your systems tick like clockwork -- all without needing 1.21
gigawatts.
==============รท
http://www.sluug.org/
<https://www.google.com/url?q=http://www.sluug.org/&sa=D&source=calendar&usd=2&usg=AOvVaw1pCygITLUCwj9arN6WP3QV>
The URL link to connection instructions for this meetng is posted earlier
on the day of the meetng, at the above home page. It is the link called
"linked here".
*
* ONLINE MEETINGS ONLY until further notice.
* ONLINE sessions will use a remote video meeting service.
* HOW TO CONNECT instructions will be on the
https://www.sluug.org/
<https://www.google.com/url?q=https://www.sluug.org/&sa=D&source=calendar&usd=2&usg=AOvVaw30xd8Gqu0jxQlAsm68bqFG>
web
page and on our mailing lists. Note that your browser cache may need to be
refreshed each time you check the web page for the instructions.
*
* We will open the remote session at about 6:00 PM, so that you can
join early to test sharing your microphone, screen and video camera.
