Hack Her News @ForumSecure
🛡️ Cybersecurity pro with a passion for securing the unseen. open.spotify.com/show/7J1CMCdr8… United kingdom Joined July 2012-
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30.Router vs Switch: Router links networks; switch links devices. 31.RMF: Steps to manage and check security controls. 32.Packet same network: Uses MAC addresses through switches. 33.TCP vs UDP: TCP is reliable; UDP is faster. 34.TCP handshake: SYN, SYN-ACK, ACK to conn
Before a computer network interview read this 🧵
25.Traceroute: Shows the path packets take. 26.Find issue: Follow packet path to spot the problem. 27.Cisco ASA config: Set rules to allow or block traffic. 28.TCP/IP: The main way computers talk on a network. 29.OSI model: Seven layers showing how data moves.
20.HTTPS: Encrypted version of HTTP. 21.HTTPS vs SSL: HTTPS uses SSL/TLS for security. 22.Threat modeling: Find risks before hackers do. 23.Subnet: Splits a network into smaller parts. 24.Subnet mask: Shows which part of the IP is the network.
Common ports: 22 (SSH), 80 (HTTP), 443 (HTTPS); protect with firewalls
Kerberos: Uses tickets from a trusted server to prove identity. Compress then encrypt: Compress first to hide data patterns. Prove message sender: Use digital signatures. Encrypt at rest: Yes, to stop data theft.
Before an security engineer interview read this thread 🧵
Diffie-Hellman vs RSA: DH shares keys; RSA encrypts and signs.
Auth vs Authz: Auth = who you are; Authz = what you can do.
Why HMAC: Stops faking because you need the secret key.
HMAC: Checks message integrity with a secret key and hash.
SSL handshake: Client and server agree on keys to start encryption.
Sync vs Async encryption: One key for both vs two different keys.
PKI: Uses certificates and key pairs to trust and encrypt data.
JWT: A token that proves who you are without saving session data.
OAuth: Lets apps access your info safely without your password.
Sessions: Keep you logged in by tracking you on the server.
Cookies: Small data stored in the browser to remember user sessions or preferences.
Three-way handshake: TCP establishes a connection using SYN, SYN-ACK, and ACK messages.
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