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Let's have a look at a simple IPsec configuration example 😇😇 What is IPsec? A Virtual Private Network, common name VPN creates a secure, encrypted connection over the internet, allowing data to be transmitted between remote sites or users as if they were directly connected to a private network. IPsec is a widely used protocol suite within VPNs, especially in site-to-site VPNs, which connect entire networks securely. IPsec operates at the network layer and provides encryption, integrity, and authentication for data transmitted over IP networks. It includes two main components Authentication Header for verifying data integrity and Encapsulating Security Payload for encrypting data. By doing so, IPsec ensures that data is protected from eavesdropping, tampering, and unauthorized access, making it essential for securing communications over public networks like the internet.

#letslearn #ports #protocols #services #ssh #telnet 🔒 Securing Connections: Ports 22 and 23 Unveiled 🔐 Today, let's explore the digital gateways of Ports 22 and 23, where security and communication converge: 🔐 Port 22 - SSH (Secure Shell): A fortress for remote access! Port 22 hosts SSH, encrypting your connections and providing a secure channel for command execution and file transfers. It's the go-to for administrators ensuring secure interactions with servers and network devices. 🔓 Port 23 - Telnet: A classic in network communication! Port 23 is home to Telnet, a protocol for bidirectional text-based communication. While efficient, Telnet operates without encryption, making it a historical choice but less secure in today's cybersecurity landscape. Understanding these ports is like holding the keys to digital doors—SSH for secure access and Telnet for legacy communication. 🚪💻 #SSH #Telnet #NetworkSecurity #PortsExplained

Understanding network protocols is crucial for ensuring smooth and secure communications across the internet. From HTTP for web browsing to TCP for reliable data transfer, and SSL/TLS for encrypted connections, these protocols are the backbone of our digital interactions. Types of Network Protocols: Network Communication: HTTP, TCP, UDP Network Management: ICMP, SNMP File Transfer & Email: FTP, POP3, IMAP Network Security: SSL, HTTPS, TLS Other Protocols: SIP, RTP, PPTP Learn how these protocols work and their roles in Networking!💡💻 #networkprotocols #cybersecurity #it

What is IPsec? IPsec, short for Internet Protocol Security, is a suite of protocols used to secure internet communications at the IP layer. It provides cryptographic security services for data integrity, confidentiality, and authentication, ensuring secure communication between devices over a public network like the internet. Confidentiality: Encryption of our data so that only intended user or recipient will able to read or decrypt it. Integrity: We want to make sure that nobody changes the data in our packets. Authentication: The sender and receiver will authenticate each other to make sure that we are really talking with the device we intend to. Anti-replay: Even if a packet is encrypted and authenticated, an attacker could try to capture these packets and send them again. By using sequence numbers, IPsec will not transmit any duplicate packets. #standards #vpn #ipsec #protocols #framework # #confidentiality #integrity #authentication #Secure #key #exchange #AH #ESP #DES #3DES #AES #MD5 #SHA #DH #PSK #RSA #cisco #networking

How to configure IPsec VPN site to sites? The access-list extended can evaluate many of the other fields in the layer 3 and layer 4 headers of an IP packet. These are the ACLs that use source IP, Destination IP, source port, and Destination port. we can also mention which IP traffic should be allowed or denied. This gives the extended access list the ability to make much more granular decisions when controlling traffic. These uses range from 100-199 and 2000-2699. (it's very important to use extended ACL in IPsec with VPN, the access-list is used to tell the router which traffic is to encrypt.) crypto isakmp enable this command is used to enable IKE for IPsec function. IKE is enabled by default but if it's disabled then you must enable it with the help of this command. IKE is also called ISAKMP. it's a negotiation protocol that is used to allow two hosts to agree on how to build an IPsec security association. IKE separates negotiation into two Phases. phase 1 is used to create the first tunnel. phase 2 creates the tunnel that protects data. Crypto ISAKMP policy internet security association key management protocol policy (ISAKMP). we need to create an ISAKMP policy for the IKE phase 1 negotiation process and define the authentication, encryption, and hash function which is used to control traffic between the VPN endpoints. #cisco #ciscogateway #cisconetworking #ciscosecure #ciscosecurity #ciscocertification #ciscopartners #ciscocert #ccna #ccnacertification #ccnatraining #networksecurity #bgproducts #networkengineer #ccie #ccna #ccnp #networkinfrastructure #internetprotocol https://lnkd.in/dwb8tB3S

#31Dayscybersecuritychallenge with Umanhonlen Gabriel and Tecon Media #Day17 Internet Protocol Security (IPsec) is a secure network protocol suite that authenticates and encrypts packets of data to provide secure encrypted communication between two computers over an Internet Protocol network. Some key features of IPsec include: 1. Authentication: IPsec can verify the identity of communicating parties to ensure that data is not intercepted or modified by unauthorized entities. 2. Encryption: IPsec can encrypt the data contained within IP packets to provide confidentiality and prevent eavesdropping. 3. Integrity: IPsec includes mechanisms to ensure that data has not been tampered with during transmission. 4. Anti-replay: IPsec provides protection against replay attacks by ensuring that each packet is unique and cannot be duplicated. 5. Key Management: IPsec requires the establishment and management of cryptographic keys for encryption and authentication purposes

Join FEND, Inc., Loop1 and SolarWinds on July 30 as they unveil a robust approach to air-gapping networks. Learn about a solution that integrates data diodes with SolarWinds SEM for #security and #compliance: https://ow.ly/xPbn30sF1U1

HOW IPSEC CONFIG IS DONE!! | Network Security | IPCisco.com . Internet Protocol Security (IPsec) is a secure network protocol suite that authenticates and encrypts packets of data to provide secure encrypted communication between two computers over an Internet Protocol network. . IPSec VPN provides a Private and Secure IP communication over a Public Network Infrastructure. With this technology, different sites or users in different geographical areas can communicate over a network and this provides a very good resource utilization. . IPSec Lesson: https://buff.ly/3IuWoBD . #ccna #network #cisco #networksecurity

Internet Protocol security (IPsec) is used to encrypt IP traffic. IPSec encapsulates & encrypts IP packet payloads & uses Tunnel mode to protect virtual private network (VPN) traffic. The following are main components of IPsec: 1. Authentication Header (AH) 2. Encapsulating Security Payload (ESP) Day 21/30 of Josh Mason's #secpluschallenge

🌐🔐 Use a VPN for Secure Browsing 🔐🌐 When using public Wi-Fi, protect your data by connecting through a Virtual Private Network (VPN). A VPN encrypts your internet connection, making it hard for cybercriminals to intercept your information. 🔒 Browse safely and securely. #VPN #SecureBrowsing #CyberSafety#CatchMark