image.png

1) DHCP:

  1. DHCP discover:

    src: 0.0.0.0:68, 00-16-…

    dest: 255.255.255.255:67, ff-ff-…

  2. DHCP offer:

    src: 172.18.3.20:67, 00-36-…

    dest: 255.255.255.255:68, ff-ff-…

  3. DHCP request:

    src: 0.0.0.0:68, 00-16-…

    dest: 255.255.255.255:67, ff-ff-…

  4. DHCP accept:

    src: 172.18.3.20:67, 00-36-…

    dest: 255.255.255.255:68, ff-ff-…

→ IP address, gataway router, subnet mask, local DNS server

ARP

2) DNS resolution

src

dest

→ get google.com IP address: 64.233.169.105

3) TCP

4) TLS

client hello

server hello

certificate

server key exchange (signature)