Канал: Practical Networking

Elliptic Curve Cryptography in less than 5 minutes

Elliptic Curve Cryptography in less than 5 minutes

Diffie-Hellman Key Exchange and Forward Secrecy

Diffie-Hellman Key Exchange and Forward Secrecy

RSA Key Exchange and Forward Secrecy - Cryptography Essentials

RSA Key Exchange and Forward Secrecy - Cryptography Essentials

You can't do security without THIS

You can't do security without THIS

DSA Signatures

DSA Signatures

RSA Signatures

RSA Signatures

Signatures - What and why are they?

Signatures - What and why are they?

RSA & Asymmetric Encryption - Cryptography Essentials

RSA & Asymmetric Encryption - Cryptography Essentials

A better definition of Asymmetric Cryptography

A better definition of Asymmetric Cryptography

PRFs explained: Transforming Secrets into Infinite Keys - Pseudo Random Functions

PRFs explained: Transforming Secrets into Infinite Keys - Pseudo Random Functions

MAC / HMAC - Message Authentication Code / Hash Bashed Message Authentication Codes

MAC / HMAC - Message Authentication Code / Hash Bashed Message Authentication Codes

Symmetric Encryption - AES ChaCha20 3DES RC4 DES - Cryptography Essentials

Symmetric Encryption - AES ChaCha20 3DES RC4 DES - Cryptography Essentials

Symmetric Cryptography is a category

Symmetric Cryptography is a category

Understanding Secret Keys: A Simple Explanation

Understanding Secret Keys: A Simple Explanation

Hashing and Hashing Algorithms - md5 sha1 sha256 sha2 sha3 - Cryptography Essentials

Hashing and Hashing Algorithms - md5 sha1 sha256 sha2 sha3 - Cryptography Essentials

Cryptography Essentials - Series Intro

Cryptography Essentials - Series Intro

OSI Model Layer 5, 6, and 7 -- Session, Presentation, & Application Layers -- what they actually do

OSI Model Layer 5, 6, and 7 -- Session, Presentation, & Application Layers -- what they actually do

How do Routers work? What is a Routing Table? #ccna #comptia #networking #networkdevices #infosec

How do Routers work? What is a Routing Table? #ccna #comptia #networking #networkdevices #infosec

What is a Router? #networking #networkdevices #ccna #comptia #informationsecurity #networkingtips

What is a Router? #networking #networkdevices #ccna #comptia #informationsecurity #networkingtips

HTTP vs HTML: Unveiling Network Protocols using Telnet

HTTP vs HTML: Unveiling Network Protocols using Telnet

What is a Switch? #networking #networkdevices #ccna #comptia #informationsecurity #networkingtips

What is a Switch? #networking #networkdevices #ccna #comptia #informationsecurity #networkingtips

What is a Network Bridge? Bridge vs Hub -- #network #networking #networkdevices #ccna #comptia #it

What is a Network Bridge? Bridge vs Hub -- #network #networking #networkdevices #ccna #comptia #it

What is a Hub? #networking #networkdevices #ccna #comptia #informationsecurity #networkingtips

What is a Hub? #networking #networkdevices #ccna #comptia #informationsecurity #networkingtips

What is a Repeater? #network #networking #networkdevices #ccna #comptia

What is a Repeater? #network #networking #networkdevices #ccna #comptia

What are Subnets? #networking #cybersecurity

What are Subnets? #networking #cybersecurity

What is a Network? #newtorking #cybersecurity #network

What is a Network? #newtorking #cybersecurity #network

What are IP Addresses? #networking #cybersecurity

What are IP Addresses? #networking #cybersecurity

What are Clients and Servers? #shorts #networking #cybersecurity

What are Clients and Servers? #shorts #networking #cybersecurity

What are Hosts? #shorts #networking #cybersecurity

What are Hosts? #shorts #networking #cybersecurity

TLS 1.3 Handshake - many CHANGES from prior versions!

TLS 1.3 Handshake - many CHANGES from prior versions!

TLS 1.3 Cipher Suites - Here is what CHANGES!

TLS 1.3 Cipher Suites - Here is what CHANGES!

TLS 1.3 - What Changes? What stays the same?

TLS 1.3 - What Changes? What stays the same?

Ask Me Anything - 150k Subscribers - THANK YOU

Ask Me Anything - 150k Subscribers - THANK YOU

how do you find the number of subnets from a mask?

how do you find the number of subnets from a mask?

Can a portion of a packet be dropped?

Can a portion of a packet be dropped?

Why send an ACK with no data? #tcp

Why send an ACK with no data? #tcp

control z on Cisco Routers

control z on Cisco Routers

May 9, 2023

May 9, 2023

UDP doesn't suck! It's the BEST L4 protocol for THESE types of applications...

UDP doesn't suck! It's the BEST L4 protocol for THESE types of applications...

TCP - 12 simple ideas to explain the Transmission Control Protocol

TCP - 12 simple ideas to explain the Transmission Control Protocol

TCP vs UDP - Explaining Facts and Debunking Myths - TCP Masterclass

TCP vs UDP - Explaining Facts and Debunking Myths - TCP Masterclass

Can I rebuild an OSPF topology using ONLY the LSDB?

Can I rebuild an OSPF topology using ONLY the LSDB?

Keychains / Key Rotation / hmac-sha keys - OSPF Authentication - Practical OSPF

Keychains / Key Rotation / hmac-sha keys - OSPF Authentication - Practical OSPF

TLS Handshake - EVERYTHING that happens when you visit an HTTPS website

TLS Handshake - EVERYTHING that happens when you visit an HTTPS website

OSPF Area Types - Stub, NSSA, Totally Stub, Totally NSSA - Practical OSPF

OSPF Area Types - Stub, NSSA, Totally Stub, Totally NSSA - Practical OSPF

OSPF Network Types - FINALLY, an explanation that makes sense - Practical OSPF

OSPF Network Types - FINALLY, an explanation that makes sense - Practical OSPF

OSPF LSA - the BEST explanation of the Types of OSPF LSAs

OSPF LSA - the BEST explanation of the Types of OSPF LSAs

Designated Router // Backup Designated Router // DR BDR Election // Practical OSPF // Lesson 6

Designated Router // Backup Designated Router // DR BDR Election // Practical OSPF // Lesson 6

HSTS - HTTP Strict Transport Security - Protect against SSL Stripping attack - Practical TLS

HSTS - HTTP Strict Transport Security - Protect against SSL Stripping attack - Practical TLS

What are Cipher Suites? - Practical TLS

What are Cipher Suites? - Practical TLS

OSPF Configuration & Show Commands - Practical OSPF

OSPF Configuration & Show Commands - Practical OSPF

OSPF Neighbor Adjacency States: DOWN ATTEMPT INIT 2-WAY EXSTART EXCHANGE LOADING FULL

OSPF Neighbor Adjacency States: DOWN ATTEMPT INIT 2-WAY EXSTART EXCHANGE LOADING FULL

OSPF Hello Packets :: Area Types (Stub/NSSA) :: BDR/DR :: Practical OSPF

OSPF Hello Packets :: Area Types (Stub/NSSA) :: BDR/DR :: Practical OSPF

OSPF Areas and OSPF Types of Routers - Practical OSPF - Lesson 2

OSPF Areas and OSPF Types of Routers - Practical OSPF - Lesson 2

OSPF Framework & OSPF Packets: LSDB, LSA, Hello, DBD, LSR, LSU, LSAck

OSPF Framework & OSPF Packets: LSDB, LSA, Hello, DBD, LSR, LSU, LSAck

Practical OSPF - Series Introduction

Practical OSPF - Series Introduction

EGP / IGP :: Distance Vector / Link State :: Dynamic Routing Protocols :: OSPF EIGRP BGP RIP IS-IS

EGP / IGP :: Distance Vector / Link State :: Dynamic Routing Protocols :: OSPF EIGRP BGP RIP IS-IS

Looking inside an SSL Certificate with OpenSSL

Looking inside an SSL Certificate with OpenSSL

OpenSSL - Encrypting and Decrypting Private Key Files

OpenSSL - Encrypting and Decrypting Private Key Files

Twice NAT - Network Address Translation

Twice NAT - Network Address Translation

Policy NAT - Network Address Translation

Policy NAT - Network Address Translation

Dynamic NAT - Network Address Translation

Dynamic NAT - Network Address Translation

Dynamic PAT - Network Address Translation

Dynamic PAT - Network Address Translation

Static PAT - Network Address Translation

Static PAT - Network Address Translation

Static NAT - Network Address Translation

Static NAT - Network Address Translation

NAT vs PAT, Static vs Dynamic -- demystified! -- Network Address Translation

NAT vs PAT, Static vs Dynamic -- demystified! -- Network Address Translation

How does NAT conserve IP Address Space? (and why!) - Network Address Translation

How does NAT conserve IP Address Space? (and why!) - Network Address Translation

TLS / SSL - The complete sequence - Practical TLS

TLS / SSL - The complete sequence - Practical TLS

Digital Signature Algorithm (DSA) - Cryptography - Practical TLS

Digital Signature Algorithm (DSA) - Cryptography - Practical TLS

Diffie-Hellman Key Exchange - the MAGIC that makes it possible - Cryptography - Practical TLS

Diffie-Hellman Key Exchange - the MAGIC that makes it possible - Cryptography - Practical TLS

RSA Algorithm - How does it work? - I'll PROVE it with an Example! -- Cryptography - Practical TLS

RSA Algorithm - How does it work? - I'll PROVE it with an Example! -- Cryptography - Practical TLS

Public Key Infrastructure - What is a PKI? - Cryptography - Practical TLS

Public Key Infrastructure - What is a PKI? - Cryptography - Practical TLS

How SSL & TLS use Cryptographic tools to secure your data - Practical TLS

How SSL & TLS use Cryptographic tools to secure your data - Practical TLS

Public and Private Keys - Signatures & Key Exchanges - Cryptography - Practical TLS

Public and Private Keys - Signatures & Key Exchanges - Cryptography - Practical TLS

Encryption - Symmetric Encryption vs Asymmetric Encryption - Cryptography - Practical TLS

Encryption - Symmetric Encryption vs Asymmetric Encryption - Cryptography - Practical TLS

Facebook went down!! Let's use that to talk about BGP, DNS, and Anycast

Facebook went down!! Let's use that to talk about BGP, DNS, and Anycast

Data Integrity - How Hashing is used to ensure data isn't modified - HMAC - Cryptography

Data Integrity - How Hashing is used to ensure data isn't modified - HMAC - Cryptography

Hashing, Hashing Algorithms, and Collisions - Cryptography - Practical TLS

Hashing, Hashing Algorithms, and Collisions - Cryptography - Practical TLS

How Data moves through the Internet - Networking Fundamentals

How Data moves through the Internet - Networking Fundamentals

Network Protocols - ARP, FTP, SMTP, HTTP, SSL, TLS, HTTPS, DNS, DHCP - Networking Fundamentals - L6

Network Protocols - ARP, FTP, SMTP, HTTP, SSL, TLS, HTTPS, DNS, DHCP - Networking Fundamentals - L6

Router Hierarchies and Route Summarization - Networking Fundamentals - Lesson 5 - Part 3

Router Hierarchies and Route Summarization - Networking Fundamentals - Lesson 5 - Part 3

🎬 Packet Tracer challenge: Find the Imposter - Layer 2 - SOLUTION VIDEO

🎬 Packet Tracer challenge: Find the Imposter - Layer 2 - SOLUTION VIDEO

🎬 Packet Tracer challenge: Find the Imposter - Layer 2

🎬 Packet Tracer challenge: Find the Imposter - Layer 2

🎬 Let's do Packet Tracer labs together - DHCP, VLANs, EtherChannel, Switching, Routing - PTL4

🎬 Let's do Packet Tracer labs together - DHCP, VLANs, EtherChannel, Switching, Routing - PTL4

TLS / SSL Versions - Part 2 - Practical TLS

TLS / SSL Versions - Part 2 - Practical TLS

TLS / SSL Versions - Part 1 - Practical TLS

TLS / SSL Versions - Part 1 - Practical TLS

🎬 Let's do Packet Tracer labs together - VLANs, DHCP, DHCP Relay, Trunking, SVIs, L3 Switch

🎬 Let's do Packet Tracer labs together - VLANs, DHCP, DHCP Relay, Trunking, SVIs, L3 Switch

Anti-Replay and Non-Repudiation - Practical TLS

Anti-Replay and Non-Repudiation - Practical TLS

Key Players of SSL & TLS: Client, Server, Certificate Authority (CA) - Practical TLS

Key Players of SSL & TLS: Client, Server, Certificate Authority (CA) - Practical TLS

🎬 Let's do Packet Tracer labs together - Static NAT, Dynamic PAT, Routing, Troubleshooting - PTL2

🎬 Let's do Packet Tracer labs together - Static NAT, Dynamic PAT, Routing, Troubleshooting - PTL2

🎬 Let's do Packet Tracer labs together - VLANs, Switching, Troubleshooting - PTL1

🎬 Let's do Packet Tracer labs together - VLANs, Switching, Troubleshooting - PTL1

How do SSL & TLS protect your Data? - Confidentiality, Integrity, Authentication - Practical TLS

How do SSL & TLS protect your Data? - Confidentiality, Integrity, Authentication - Practical TLS

What is SSL & TLS ? What is HTTPS ? What is an SSL VPN? - Practical TLS

What is SSL & TLS ? What is HTTPS ? What is an SSL VPN? - Practical TLS

Everything Routers do - Part 2 - How Routers forward Packets - Networking Fundamentals - Lesson 5

Everything Routers do - Part 2 - How Routers forward Packets - Networking Fundamentals - Lesson 5

Everything Routers do - Part 1 - Networking Fundamentals - Lesson 5

Everything Routers do - Part 1 - Networking Fundamentals - Lesson 5

Supernetting, IP Aggregation, and IP Summarization -- Subnetting Mastery

Supernetting, IP Aggregation, and IP Summarization -- Subnetting Mastery

🔴 VLSM Mastery - VLSM Problems using only scratch paper - Live Stream Replay

🔴 VLSM Mastery - VLSM Problems using only scratch paper - Live Stream Replay

Everything Switches do - Part 2 - Networking Fundamentals - Lesson 4

Everything Switches do - Part 2 - Networking Fundamentals - Lesson 4

Everything Switches do - Part 1 - Networking Fundamentals - Lesson 4

Everything Switches do - Part 1 - Networking Fundamentals - Lesson 4

Everything Hosts do to speak on the Internet - Part 2 - Networking Fundamentals - Lesson 3

Everything Hosts do to speak on the Internet - Part 2 - Networking Fundamentals - Lesson 3

Everything Hosts do to speak on the Internet - Part 1 - Networking Fundamentals - Lesson 3

Everything Hosts do to speak on the Internet - Part 1 - Networking Fundamentals - Lesson 3

OSI Model: A Practical Perspective - Part 2 - Networking Fundamentals - Lesson 2

OSI Model: A Practical Perspective - Part 2 - Networking Fundamentals - Lesson 2

OSI Model: A Practical Perspective - Networking Fundamentals - Lesson 2a

OSI Model: A Practical Perspective - Networking Fundamentals - Lesson 2a

Hub, Bridge, Switch, Router - Network Devices - Networking Fundamentals - Lesson 1b

Hub, Bridge, Switch, Router - Network Devices - Networking Fundamentals - Lesson 1b

Network Devices - Hosts, IP Addresses, Networks - Networking Fundamentals - Lesson 1a

Network Devices - Hosts, IP Addresses, Networks - Networking Fundamentals - Lesson 1a

Local Broadcast and Directed Broadcasts - Description and Demonstration

Local Broadcast and Directed Broadcasts - Description and Demonstration

Local Broadcast and Directed Broadcasts - Demo and Packet Captures

Local Broadcast and Directed Broadcasts - Demo and Packet Captures

ACL Placement: Closer to the Source or Destination? -- Access Control Lists (ACLs) -- Part 8 of 8

ACL Placement: Closer to the Source or Destination? -- Access Control Lists (ACLs) -- Part 8 of 8

Applying ACLs to Interfaces (IPv4 and IPv6) -- Access Control Lists (ACLs) -- Part 7 of 8

Applying ACLs to Interfaces (IPv4 and IPv6) -- Access Control Lists (ACLs) -- Part 7 of 8

IPv6 ACLs - Syntax and Demonstration -- Access Control Lists (ACLs) -- Part 6 of 8

IPv6 ACLs - Syntax and Demonstration -- Access Control Lists (ACLs) -- Part 6 of 8

Named ACL Configuration Demonstration -- Access Control Lists (ACLs) -- Part 5 of 8

Named ACL Configuration Demonstration -- Access Control Lists (ACLs) -- Part 5 of 8

Named ACL Syntax -- Access Control Lists (ACLs) -- Part 4 of 8

Named ACL Syntax -- Access Control Lists (ACLs) -- Part 4 of 8

Numbered ACL Configuration Demonstration -- Access Control Lists (ACLs) -- Part 3 of 8

Numbered ACL Configuration Demonstration -- Access Control Lists (ACLs) -- Part 3 of 8

Numbered ACL Syntax -- Access Control Lists (ACLs) -- Part 2 of 8

Numbered ACL Syntax -- Access Control Lists (ACLs) -- Part 2 of 8

What Are Access Lists? -- Access Control Lists (ACLs) -- Part 1 of 8

What Are Access Lists? -- Access Control Lists (ACLs) -- Part 1 of 8

Discontiguous Wildcard Masks

Discontiguous Wildcard Masks

Wildcard Masks -- What are they? How do you convert them? What are they used for?

Wildcard Masks -- What are they? How do you convert them? What are they used for?

Binary - The SIMPLEST explanation of Counting and Converting Binary numbers

Binary - The SIMPLEST explanation of Counting and Converting Binary numbers

Static NAT -- Configuration and Verification -- NAT on Cisco IOS Routers (FREE Course Preview)

Static NAT -- Configuration and Verification -- NAT on Cisco IOS Routers (FREE Course Preview)

Inside Local, Inside Global, Outside Local, Outside Global -- NAT on Cisco IOS Routers

Inside Local, Inside Global, Outside Local, Outside Global -- NAT on Cisco IOS Routers

Route Precedence -- Answer to Bonus Questions

Route Precedence -- Answer to Bonus Questions

Route Precedence -- How does a Router choose a path when multiple paths exist?

Route Precedence -- How does a Router choose a path when multiple paths exist?

What are VLANs? -- the simplest explanation

What are VLANs? -- the simplest explanation

Variable-Length Subnet Mask (VLSM) - Subnetting Mastery - FLSM and VLSM Appendix Part 2 of 2

Variable-Length Subnet Mask (VLSM) - Subnetting Mastery - FLSM and VLSM Appendix Part 2 of 2

Fixed-Length Subnet Mask (FLSM) - Subnetting Mastery - FLSM and VLSM Appendix Part 1 of 2

Fixed-Length Subnet Mask (FLSM) - Subnetting Mastery - FLSM and VLSM Appendix Part 1 of 2

Native VLAN - the DEFINITIVE illustration

Native VLAN - the DEFINITIVE illustration

Subnetting in the /1 - /16 range - Subnetting Mastery - Part 7 of 7

Subnetting in the /1 - /16 range - Subnetting Mastery - Part 7 of 7

Subnetting in the /17 - /24 range - Subnetting Mastery - Part 6 of 7

Subnetting in the /17 - /24 range - Subnetting Mastery - Part 6 of 7

Time-Saving Tricks for Subnetting - Subnetting Mastery - Part 5 of 7

Time-Saving Tricks for Subnetting - Subnetting Mastery - Part 5 of 7

Practice Examples - Subnetting Mastery - Part 4 of 7

Practice Examples - Subnetting Mastery - Part 4 of 7

How to solve ANY Subnetting Problems in 60 seconds or less - Subnetting Mastery - Part 3 of 7

How to solve ANY Subnetting Problems in 60 seconds or less - Subnetting Mastery - Part 3 of 7

Drawing the Cheat Sheet - Subnetting Mastery - Part 2 of 7

Drawing the Cheat Sheet - Subnetting Mastery - Part 2 of 7

What is Subnetting? - Subnetting Mastery - Part 1 of 7

What is Subnetting? - Subnetting Mastery - Part 1 of 7

Address Resolution Protocol (ARP) in less than 5 minutes

Address Resolution Protocol (ARP) in less than 5 minutes

Packet Traveling - How Packets Move Through a Network

Packet Traveling - How Packets Move Through a Network