lesson 9: Linux Operating System Vulnerabilities and security

Chia sẻ: Gacon | Ngày: | Loại File: PPT | Số trang:26

Thêm vào BST

Báo xấu

113
lượt xem 18
download

Download Vui lòng tải xuống để xem tài liệu đầy đủ

Describe the fundamentals of the Linux operating system. Describe the vulnerabilities of the Linux operating system...

Chủ đề:

Bình luận(0) Đăng nhập để gửi bình luận!

Lưu

Nội dung Text: lesson 9: Linux Operating System Vulnerabilities and security

LESSON 9 Linux Operating System Vulnerabilities and security
Objectives ♦ Describe the fundamentals of the Linux operating system ♦ Describe the vulnerabilities of the Linux operating system ♦ Describe Linux remote attacks ♦ Explain countermeasures for protecting the Linux operating system 2
Review of Linux Security Fundamentals ♦ Linux is a version of UNIX – Usually available free – Red Hat – Ubuntu – Mandrak – Sambian – Knoppix 3
4
5
Crack Password ♦ /etc/passwd ♦ sc/etc/shadow Root:2bcadvr345:0:0:root: /root: /bin/bash - John The Ripper - Viper - Slurple 6
7
Linux File System ♦ Ls –l ♦ -r-x-r-x-wx ♦ Chmod 777 a.txt Firewall: iptables 8
9
10
11
Linux OS Vulnerabilities ♦ Nessus can be used to – Discover vulnerabilities related to SMB and NetBIOS – Enumerate shared resources – Discover the root password 12
13
14
15
Linux OS Vulnerabilities ♦ Test Linux computer against common known vulnerabilities – Review the CVE and CAN information ♦ Differentiate between local attacks and remote attacks – Remote attacks are harder to perform 16
17
18
Remote Access Attacks on Linux Systems ♦ Attacking a network remotely requires – Knowing what system a remote user is operating – The attacked system’s password and login accounts 19
Installing Trojan Programs ♦ Trojan programs spread as – E-mail attachments – Fake patches or security fixes that can be downloaded from the Internet ♦ Trojan program functions – Allow for remote administration – Create a FTP server on attacked machine – Steal passwords – Log all keys a user enters, and e-mail results to the attacker 20