SecWIR

CertFirewall

• kernel module to capture the tls handshake of specific website
• certificate verifier program in python

CertVerifier

• extract certificate from payload and verify the certificate chain

synfilter

• kernel module to redirect the syn packet of tcp three-way-handshake nfq
• program to extract window size of the syn packet

netflow

• shell script to find out the top 5 traffic that goes through the network

simpleFileTunnel

• Using netcat and /dev/tcp to send/receive file