448 reactions · 121 shares | TCP vs UDP!! | IPCisco.com . When we compare TCP vs UDP, there is a big difference also about the length of the headers. TCP Header is 20 Bytes long and this value can be increased up to 60 bytes with option fields. But UDP Header is fixed 8 Bytes long. As security mechanims, SSL/TLS (Transport Layer Security) is used by TCP. Lesson: https://ipcisco.com/lesson/tcp-versus-udp/ #shorts #ccna #networkengineers | Ipcisco | Facebook