January 2021
Intermediate to advanced
547 pages
12h 4m
Chinese
Content preview from 网络安全评估（第三版）
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
常见网络服务评估
｜
199
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 5.3 (protocol 2.0)
| ssh-hostkey:
| 1024 6d:c9:1f:94:0b:ca:db:27:24:c2:d1:80:26:5b:0d:4d (DSA)
| 2048 06:fd:95:47:8c:37:3a:61:a7:c4:85:ab:af:29:1f:e1 (RSA)
功能枚举
使用
Nmap
和
OpenSSH
客户端（以详细模式）对暴露
SSH
服务进行调查可
以揭示其支持的算法和认证机制，下面将进行描述。
支持的算法
SSH
使用握手机制进行密钥交换、认证和加密算法选取。实例
7-7
展示了使
用
Nmap
对
SSH
服务器支持的密钥交换、认证、加密和完整性检查等算法进
行枚举的过程
注
3
。
实例 7-7：使用 Nmap 列出 SSH 服务器支持的算法
root@kali:~#
nmap -p22 --script ssh2-enum-algos 192.168.0.12
Starting Nmap 6.46 (http://nmap.org) at 2014-11-14 11:23 UTC
Nmap scan report for 192.168.0.12
PORT STATE SERVICE
22/tcp open ssh
| ssh2-enum-algos:
| kex_algorithms: (4)
| diffie-hellman-group-exchange-sha256 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.