CCNA multicast quiz question: How will multicast traffic flow in the network? CCNA | CCNP
Can you answer this CCNA quiz question? What will happen to the multicast frames in this network? This is one of my daily quiz question scenarios. In this video, I give you the answer and explain the solution.
Learn the basics of burpsuite. Start using Burp with web applications.
Menu:
What is Burp Suite is designed to do: 0:00
Introduction: 0:35
Versions of Burp Suite: 1:12
How does Burp Suite fit into Kali Tools: 2:04
Lab Demo: 4:39
What are we doing? 5:20
Start BurpSuite: 5:45
GUI: Lots of stuff! 8:28
Where to start: 9:00
Foxy Proxy: 10:44
Filter scope of information: 14:05
Burp Suite HTTPS / Certificate install: 15:07
Clear history: S19:00
What is Burp not designed to do: 19:57
Recommend courses: 22:02
Request and Response information: 23:24
View login information: 29:50
Repeater: 32:01
Manipulate website with repeater: 35:01
SQL Injection using intruder: 41:55
Sniper 46:30
What is fuzzing: 49:34
SQL fuzz: 50:23
SQL Injection result: 55:24
Decoder: 59:07
BApp Store (Extender): 1:01:20
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Packet Tracer file (PT Version 7.1): https://bit.ly/2G9KmLK
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For lots more content, visit http://www.davidbombal.com - learn about GNS3, CCNA, Packet Tracer, Python, Ansible and much, much more.
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Routers forward packets using either route information from route table entries that you manually configure or the route information that is calculated using dynamic routing algorithms.
Static routes, which define explicit paths between two routers, cannot be automatically updated; you must manually reconfigure static routes when network changes occur. Static routes use less bandwidth than dynamic routes. No CPU cycles are used to calculate and analyze routing updates.
You can supplement dynamic routes with static routes where appropriate. You can redistribute static routes into dynamic routing algorithms but you cannot redistribute routing information calculated by dynamic routing algorithms into the static routing table.
You should use static routes in environments where network traffic is predictable and where the network design is simple. You should not use static routes in large, constantly changing networks because static routes cannot react to network changes. Most networks use dynamic routes to communicate between routers but might have one or two static routes configured for special cases. Static routes are also useful for specifying a gateway of last resort (a default router to which all unroutable packets are sent).
Administrative Distance
An administrative distance is the metric used by routers to choose the best path when there are two or more routes to the same destination from two different routing protocols. An administrative distance guides the selection of one routing protocol (or static route) over another, when more than one protocol adds the same route to the unicast routing table. Each routing protocol is prioritized in order of most to least reliable using an administrative distance value.
Static routes have a default administrative distance of 1. A router prefers a static route to a dynamic route because the router considers a route with a low number to be the shortest. If you want a dynamic route to override a static route, you can specify an administrative distance for the static route. For example, if you have two dynamic routes with an administrative distance of 120, you would specify an administrative distance that is greater than 120 for the static route if you want the dynamic route to override the static route.
Directly Connected Static Routes
You must specify only the output inte
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Connect with David on LinkedIn here: https://www.linkedin.com/in/davidbombal/
In these series of videos David Bombal, CCIE and Chuck Black, Developer discuss the future of networking. SDN, Network automation, network programmability, APIs, NETCONF, REST APIs and lots of other technologies!
Will Artificial Intelligence take our jobs? Do network engineers need to become programmers? Study computer science? Should I go back to school / college / university and become a programmer?
Learn from someone who wrote SDN code. Who wrote SDN books. Who understands how SDN code actually works.
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https://www.youtube.com/watch?v=LbvAf9vK2dQ
GNS3 now has a FRRouting appliance. This makes it easy to run a whitebox switching / routing appliance in GNS3. FRR supports multiple protocols including EIGRP, OSPF, BGP, PIM, RIP and more.
In this demo I show you how can with FRRouting (FRR) and Cisco IOSv.
FRRouting: https://frrouting.org/
FRRouting documentation: https://frrouting.org/user-guide/
GitHub: https://github.com/FRRouting/frr
Cumulus Networks: https://cumulusnetworks.com/learn/frrouting/
RFC: https://tools.ietf.org/html/rfc7868
FRRouting (FRR) is an IP routing protocol suite for Linux and Unix platforms which
includes protocol daemons for BGP, IS-IS, LDP, OSPF, PIM, and RIP.
FRR’s seamless integration with the native Linux/Unix IP networking stacks
makes it applicable to a wide variety of use cases including connecting
hosts/VMs/containers to the network, advertising network services, LAN
switching and routing, Internet access routers, and Internet peering.
FRR has its roots in the Quagga project. In fact, it was started by many
long-time Quagga developers who combined their efforts to improve on
Quagga's well-established foundation in order to create the best routing
protocol stack available. We invite you to participate in the FRRouting
community and help shape the future of networking.
Join the ranks of network architects using FRR for ISPs, SaaS infrastructure,
web 2.0 businesses, hyperscale services, and Fortune 500 private clouds.
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https://www.youtube.com/watch?v=0-OKFego7r4
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Are we doomed? Will AI like ChatGPT replace us? I put it to the test and challenged it to write C code, Python hacking scripts, Rubber Ducky scripts, configure Cisco networks and more.
Watch my previous interview with Dr Mike Pound (Computerphile) on how to get started learning AI: https://youtu.be/PH9RQ6Yx75c
// MENU //
00:00 - Intro
00:30 - Testing ChatGPT // The new AI chatbot
02:27 - Is ChatGPT SkyNet?
04:18 - C programming code
08:34 - Python SSH brute force script
13:51 - Rubber Ducky scripts (Windows 11)
15:57 - Rubber Ducky scripts on Android
17:05 - Nmap scans
19:12 - Cisco configs - Switches and BGP
24:29 - Conclusion // Learn AI
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https://www.youtube.com/watch?v=Fw5ybNwwSbg
GNS3 supports many vendors and multiple operating systems from vendors such as Cisco. Learn about the various Cisco OS's like NX-OS, IOSv, IOSvL2, IOS-XRv and others like Arista cEOS, Juniper and more!
Free software worth $200: https://goo.gl/613TUF
Part 1: https://youtu.be/fNc6aTQB0Ng
GNS3 Support (Go here if you need help): https://gns3.com/community
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https://www.youtube.com/watch?v=vhYcBc9_Qq0
It's just too easy to hack badly configured networks. You need to learn to code! Learn Python. Learn Networking. You are going to be very powerful and very scary if you combine knowledge of networking with Python scripting! But, do good.
In this video I'll show you why you need to configure networks properly to avoid spanning tree and other protocol manipulation using simple Python scripts. Learn to code. Learn Linux. Learn Kali Linux.
Menu:
You need to learn Python! 0:00
Network Topology: 0:50
Scapy: 1:35
Python Script overview: 1:51
Spanning Tree Root Election: 2:14
Current Spanning Tree network: 2:30
Script demo: 3:01
Results of attack: 3:53
You want to implement root guard: 4:21
Wireshark captures: 4:53
Use a Python loop: 6:27
Nasty, nasty thing to do: 7:24
How to protect the network: 7:37
Result of spanning tree root guard: 8:17
CCNA courses often don't show this: 8:50
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Scripts:
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All scapy scripts here: https://davidbombal.wiki/githubscapy
Scapy Spanning Tree Root attack: https://davidbombal.wiki/scapystproot
Playlist: https://davidbombal.wiki/scapy
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Scapy Resources:
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Website: https://scapy.net/
Documentation: https://scapy.readthedocs.io/en/latest/
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Please note that links listed may be affiliate links and provide me with a small percentage/kickback should you use them to purchase any of the items listed or recommended. Thank you for supporting me and this channel!
#python #scapy #kalilinux
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https://www.youtube.com/watch?v=Ay6fVYpYlkQ
FREE download: http://bit.ly/solarputty
Professional grade CLI access is now free, including:
- Tabs
- Native GNS3 integration
- Login scripts
- Modular credential repository
- Combined search and quick connect
- SSH, Telnet, SCP, and SFTP support
- Windows search integration
Key Features
- Manage multiple sessions from one console with a tabbed interface
- Save credentials or private keys to any session for easy login
- Automate all scripts you’re using when connection is established
- Find your saved session easily thanks to Windows Search integration
- No installation is needed
Tabs:
Use the credentials tab to store your most commonly used credentials. When you create a new session, reference that stored credential rather than typing it out again. Update all session credentials by updating the stored credential.
Search or Quick Connect:
Did you notice the field you use to search for a saved session can also be used to quick connect? Try entering an IP and port, like 10.199.4.12:22 and pressing enter.
Colors:
Colors can be used to remind you which sessions go to production gear, which data center your connected to, or anything else you like. Set the color when creating a new session or editing an existing session.
Key shortcuts:
Keep your hands on the keyboard because mice are slow!
Ctrl + t: Open a new tab
Ctrl + w: Close tab
Alt+F4: Exit Solar-PuTTY
Scripts - Automated login, bulk configuration:
Scripts are executed immediately after login. You can use scripts to automatically enter enable/privileged exec. You can also create longer scripts to make configuration changes to a device and then run the script on several sessions. Just like credentials, these are stored and can be referenced by any session.
Session - Export and import:
Whether you’re in a classroom or in the office it’s a pain to share connection information verbally. Instead, use the three dots in the top left of Solar-PuTTY to export your sessions and have your pal import them. Less talk, more results.
Tags - Better than folders:
Tags are a great way to organize your sessions without having to worry about hierarchy or overlap. We like to use them for location (“Dallas Datacenter”) and roles (“Border Router”), but you can use them for anything you like. Create tags in Settings (Ctrl + s). Apply tags to any sessions. Tags are searchable!
Session Logging - Know your work:
Dreaming of a CCIE? Review your logs after a lab and assess opportunities where you can improve in terms of accuracy, speed, order of operations; all important for the CCIE. Bad outage caused by a config? Prove exactly what you did or did not do. Better yet, prove how you fixed it! Session logging can be enabled when you create a new session or by editing an existing session.
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https://www.youtube.com/watch?v=shoDldraAsE
You should not be using Telnet! You should be using SSH. In this video I capture passwords using Wireshark from a Telnet session and configure SSH on a Cisco router.
Go here to access my full GNS3 CCNA course: http://goo.gl/ZGlJGq
The course includes:
1) Video Training
2) Simulations
3) GNS3 Lab Guides
4) Quiz questions to help you prepare for the exam
4) Software to create IPSec VPN tunnels
5) Software and calculators
All the best with your CCNA exam preparation!
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https://www.youtube.com/watch?v=5NQsDHe1Hnw