Common Linux Services and corresponding vulnerabilities and defense measures

Professor Wang's teaching summary:

Nginx Reverse Proxy Parsing Vulnerability

Redis is not authorized to access

DNS Domain Transfer Vulnerability

Rsync exploits?

SSH password-free login?

Zmap Nmap Scan to filter? Masscan

Hydra Password Blasting

THEHAVERSC Information Collection

Blasting and principle of weak password

There are some other scanning tools

Kali Agent Method (intranet infiltration)

Nessus Baseline Scan

Linux Hardening

Windows Hardening

Apache Prevents directory traversal

Tomcat-

Second, DNS domain delivery vulnerability with a command dnsenum sem.tsinghua.edu.cn, if there is a domain delivery vulnerability, the following lists the sub-domain name.

One, Redis unauthorized access (example)

1. First the target has been identified and there is a Redis unauthorized access vulnerability on this site.

Use Nmap to scan what the service and the corresponding port is.

2. Then access the IP to find the Web site root directory.

3. Connect with the Redis client and write a word to the Trojan.

4. Visit the website again to see if the Trojan is written successfully.

5. After the successful writing, use the kitchen knife connection, enter the password, you can go to the website backstage.

Linux Hardening methods:

To be Continued ...

Common Linux Services and corresponding vulnerabilities and defense measures