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Blocking inbound TCP segments with ACK=0
Blocking inbound TCP segments with SYN=1
Both prevent external clients from making TCP connections to internal clients, but allow internal clients to connect to outside. How?
This came across to m… Continue reading Block inbound TCP segments with ACK=0 vs Block inbound TCP segments with SYN=1, how are they same?
I am a beginner in learning linux and wifislax tools.
Does the evil twin work with hidden networks? Or by extracting the handshake file and then decrypting it?
Continue reading Hacking a hidden wifi network with an evil twin or a handshake file [closed]
I am developing an application where I am setting up a TLS connection between two devices. I am using TLSv1.3, but when I try to set the cipher suite like this:
String[] protocolCHACHA = new String[1];
protocolCHACHA[0]= "TLS_CHACHA20… Continue reading SSLHandshakeException when using TLSv1.3 and trying to set cipher suite
I have a question for my security class related to the TCP handshake. The question is:
A hacker just set up a TCP connection with a web server in Chicago, Illinois, claiming he is coming in with a source IP address that
clearly belongs to… Continue reading Speed of TCP handshake to prove an IP is spoofed [closed]
We know that in WPA2’s four-way handshake, a MIC is generated in order verify the supplicant (client). But how it is generated? Is something hashed to get the MIC? The PTK (pairwise transient key) depends on the nonces and MAC addresses an… Continue reading How is the MIC (message integrity code) generated in WPA2?
Am trying to understand the phase where the symmetric key is getting generating. From what I am understanding Diffie-Hellman is used to derive the symmetric key in TLS1.3
I am reading this tls explanation and so many keys are derived
Is th… Continue reading symmetric key generation in TLS 1.3
I am learning TLS handshake and find client/serve will negotiate a cihpersuite during client/server hello.
Usually, the last part of a ciphersuite is a hash algorithm, like SHA256 in ECDHE-ECDSA-AES128-SHA256. The second part of a ciphersu… Continue reading What is the relation between "signature_algorithms" handshake extension and TLS ciphersuite
I am working on implementing an Android App (client) which will be connected to Raspberry Pi (server) via Bluetooth Classic.
To make data transfer securely, I want to implement SSL encryption between client and server.
I have created the B… Continue reading SSL Handshake in Android via Bluetooth Classic
I have an embedded IOT device connected to real time DB FireBase. However, the server cancel the TLS handshake with fatal alert 0x46 = protocol_version. I have managed to get an hex dump of the whole handshake process.
Can someone explain … Continue reading TLS handshake failure [migrated]
I recently found out, that according to the RFC, SSH can negotiate two different cipher (and MAC) algorithms for server-to-client-encryption and for client-to-server-encryption (check section 7.1. for reference).
In section 6.3 this is als… Continue reading Why can SSH negotiatie two different encryption and authentication algorithms?