One: preface firewall, it is divided into hardware and software firewall. No matter which network it is, the firewall must work at the edge of the network. To define how the firewall works, it requires firewall policies and rules to enable it to detect and filter IP and data entering and leaving the network. Eye
Topology: basic configuration refer to Huawei Firewall USG basic configuration (http://692344.blog.51cto.com/682344/1607629) 1, address pool configuration: 2, NO-PAT configuration 3, test
Self-built calibration time yum install-y ntp uses ntpdate time.fudan.edu.cn to calibrate time date is the most commonly used in scripts: date +% F xxxx-xx-xxdate +
Hash functions are also called hash functions and hash functions. It is an one-way cryptosystem, that is, an irreversible mapping from plaintext to ciphertext, with only encryption process and no decryption process. The hash function can transform the input of any length that meets the requirements to get a fixed-length output. This
Acl number 3212rule 1 permit ip source 192.168.212.0 0.0.1.255 destination 192.168.70.166 0rule 2 pe
Any interface of layer 3 device can be configured with IP, and layer 2 switch needs to configure a vlan virtual interface in UP state [H3C] ftp server enable / / enable ftp service [H3C] local-user h4c / / add local users
Use iptables to manage an intranet network segment experiment machine 10.10.11.121 input defaults to DROP, and opens access to all machines on 10.10.11 and 24 network segments, but sets only two machines 10.10.11.41 10.
In order to ensure that the relevant VIBs has been successfully installed on the corresponding host, we also need to go to each host to do a verification (not a necessary step, but to develop a strict technical habit so that we can avoid hitting the wall, which the cat has told our students countless times); in the last Part
NTFS file system is a widely used file system format in the market at present. It provides data protection and recovery functions, has stronger security, and basically replaces the old FAT file system. Because the security of the NTFS file system is more like that, many companies' servers adopt
This article will explain in detail what are the disadvantages of applying for a ssl certificate for free. The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article. Netizens who have known about the Internet will know that SSL certificates play a very important role in Internet transmission.
Use the telnet command to connect port 1524 of the target host and directly obtain root permissions. The Ingreslock backdoor listens on port 1524, and connects to port 1524 to gain root permissions, which is often used on an exposed server.
one。 DCN Data Communication Network data communication network transmits all kinds of management information of provincial network management centers to DGT. two。 GSM Global System for Mobile communi
Update system 1.1.Add the update source address root@kali:~# vi / etc/apt/sources.list add the update source address at the end of the file and enter: wq to save the deb http://mirrors.ustc.e
This article will explain in detail where to configure ssl and how to match it. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article. At present, the security of network data has been paid attention to by everyone, if that website is not secure, then
Process: 1, scanning: information collection (spying) 2, vulnerability exploitation 1, first detect the host system with vulnerabilities in the network segment: use the command: msf > use auxiliary/scanner/smb/smb_ms17_010 /
First of all, take a look at the general website architecture with the development of business, the logic is becoming more and more complex, the amount of data is getting larger and larger, and there are more and more interactions. Second, when there are more and more services, what service governance do we need to do? Finally, it is the choice of dubbo's architecture diagram registry du
The last time this note was not published successfully in the blog, try again today. Personal understanding, time relationship, the writing is relatively messy, please forgive me. Topology: reminder: after this topology is turned on, please turn it off as soon as you see the effect of the experiment, otherwise the eNSP will crash, and an unexpected situation may occur after the crash, which can be adjusted.
(the following is pure fiction) 1. The comparison between the division of the protocol stack and the human process of dealing with communication events Preface: reasonable people all know that "tools are the extension of human limbs", so "computer", the greatest invention of mankind in the 21 century is also a "tool", compared with other cold "tools".
1. Create file and refresh time command: touch option: file: create file-a file: modify ac time time only-m file: modify mc time time only-c file: refresh amc time if the file exists
1) the following operation commands are used in operation mode, or run show in configuration mode. A) Show system software to view the current software version b) show system uptime to view the system startup time c)
