Cyber Eagles

Port Numbers

100

The default port number for HTTP is this.

80

200

This is the default port number for SSH

22

300

A DNS server is usually set on this port number

53

400

This is the default port number for ICMP

None

500

Syslog uses this port number

514

Command Line

100

This command changes the permissions of a file or directory

chmod

200

This command changes the owner of a file or directory

chown

300

This command will locate all C++ files on your entire system

(find / -n “*.cpp”)

400

Using this command you can delete your entire filesystem

rm -rf --no-preserve-root /

500

You can utilize this lesser known VIM command to indent five lines at once

5>> OR >5>

General/Misc.

100

The acronym CIA stands for this in cyber security

Confidentiality, Integrity, Availability

200

This network node filters/blocks network traffic based upon heuristic rules

Firewall

300

An undocumented feature in a program is called this

Easter Egg

400

This is the main security concern of cloud applications

Privacy

500

This is the most commonly used key exchange protocol

Diffie-Hellman

Malware

100

The computer speech “bug” was introduced because of this

A literal bug being caught in Harvard's Mark II calculator (1945)

200

This kind of virus pretends to be a legitimate program

Trojan

300

This kind of virus encrypts your computer and asks for cash money

Ransomeware

400

This kind of malware propagates through the internet

Worm

500

This was the first computer worm ever created

Morris worm

Cryptography

100

This is the original substitution cipher

Caesar or Rot13

200

This symmetric key encryption algorithm succeeded DES

AES

300

This is what AES stands for

Advanced Encryption Standard

400

This technique is used to protect hashes from rainbow tables

Salting

500

This type of 256 bit encryption is comparable with RSA-3072

Elliptic Curve Cryptography