ping docker container from outside - Understanding docker iptables

#cybersecurity #networksecurity #docker

How to ping docker container from outside

https://www.udemy.com/course/hands-on-network-security-basics/

00:00 introduction
00:07 the issue
00:57 section goal
01:37 network overview
02:19 icmp port ?
03:25 ping src to dst (vice versa)
04:23 fix routing issue on icmp src
05:11 routing table pre/post fix comparison
05:40 look into traffic filtering on FW
06:32 NW troubleshooting principle
07:22 iptables explanations
09:05 real time iptables monitoring
10:22 allow traffic in the Docker environment
11:20 iptables debug log analysis
12:51 Follow dropped packet step by step


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This course is essential training for someone who wants to learn network security.
Everything in this course is based on real-world questions that I collected /arranged for days one, two, or three of network security training.

contents at a glance (*contents will updated/added without prior notice)
- Scapy pcap analysis
- Scapy pcap replay (UDP)
- ARP scan detection with Scapy
- Routing/ Traffic filtering issue analysis and correction in Docker environment
- Covert tunneling analysis
- Scapy TCP client vs Web Application Firewall
- JavaScript mini challenge (first step to Browser automation)
- Template Text parser(Python TTP) for Network Security

how I made this course:
- collected half-answered or unanswered network security-related questions from famous tech QA sites and security vendors' community sites.
- picked easy to intermediate ones
- made complete answers to them (**really time-consuming!**)
- arranged QAs so we can replicate the issues individually (**insanely time-consuming!**)

intended audience :

- Software developers who usually don't handle NW security problems
- Customer Success engineers who want to analyze NW security problems quickly in an isolated environment
- NW engineers who are having a hard time understanding weird NGFW UTM /Sandbox alerts

what we're going to do:

- Generate malicious traffic using popular tools and feed that traffic to pcap analysis tools to see how they analyze the traffic.
- Play with Brim ( pcap analysis tool powered by Zeek and Suricata with SEIM-like searching interface).
- learn practical network layering for troubleshooting
- code Python scapy to analyze layer two attack
- solve real-world routing/filtering issues in Docker environment
- analyze typical covert tunneling methodologies