a) Is this message a request or a response? Why?

b) What is the WEB servers IP address?

c) What is the domain name (e.g., www.umn.edu) of the WEB server?

(You will have to run some commands on your computers to learn this domain name info)

d) Is this message HTTP or HTTPS? Why?

IP: Source address = [172.217.4.110] IP: Destination address = [192.168.6.131] IP: No options IP: TCP: Retransmitted in frame 351 TCP: ----- TCP header TCP: TCP: Source port 80 (WWW/WWW=HTTP/HTTP) TCP: Destination port = 1172 TCP: Sequence number = 756422115 TCP: Next expected Seq number= 756422820 TCP: Acknowledgment number = 795588273 TCP: Data offset = 20 bytes TCP: Reserved Bits: Reserved for Future Use (Not shown in the Hex Dump) TCP: Flags = 18 TCP: 0 = (No urgent pointer) TCP: .1 Acknowledgment TCP: 1. Push TCP: 0. (No reset) TCP: 0. (No SYN) TCP: (NO FIN) TCP: Window 64240 TCP: Checksum 4759 (correct) TCP: Urgent pointer = 0 TCP: No TCP options TCP: [705 Bytes of data] TCP: HTTP: Hypertext Transfer Protocol HTTP: HTTP: 1: HTTP/1.1 200 OK HTTP: 2: Content-Type: application/ocsp-response HTTP: 3: Date: Sat, 29 Sep 2018 16:09:37 GMT HTTP: 4: Cache-Control: public, max-age=86400 HTTP: 5: Server: csp_responder HTTP: 6: Content-Length: 463