Experiment 1. Update software package 1. View the list of packages installed on the system and save 2. View the generated list file 3. View the list of software that needs to be updated in the system and save 4. Update the software package for security classes in the system 5. Check whether the update is successful and compare the update report in the original system.
Today is a memorable day, not only a western Valentine's Day, it is my wedding anniversary, but also a day when I officially start using my blog for my experience and study summary of IT work.
People who work hard will not be too bad in the end! Follow the blog or add QR 1445696451 to work together! First of all, the network topology (simulation) of a company is as follows: Huawei 3206 series routers are used in the inner network boundary, S5700 series layer 3 switching is used in the core layer, and S3 is used in the access layer.
Nmap is a very useful tool for network scanning and host detection, suitable for Winodws and Linux systems, and supports a variety of scanning technologies. NMAP is mainly used in Linux environment. It is not installed by default in RHEL. After configuring the yum source, install NM.
Nothing to do, using gns3 to configure a cisco asa-based ssl link test, cloud-1 link to the local network, the test passed 1, configuration objectives: to facilitate mobile office users to access the company's internal network, access to the ecs server through the internal network 2, materials: gns3,
In network security, the core goal is to provide availability, integrity, and confidentiality for critical assets (AIC triple: Availability, integrity, confidentiality). Availability (Availability) protection ensures grant
Iou-web version: iou-web-1.2.2-23 uploads the ios of the L2 device and associates the image, but the L2 device cannot be started, and the L3 device can. You can see the following record in the exec.txt in the log directory under the down directory: / tmp/
When the SQL Server engine receives the query request from the user, the SQL Server execution optimizer binds the query request (Request) to the Task and assigns a Workder,SQL Server to the Task to apply for the operating system's
1. Install aide package 2. Backup the configuration file of aide 3. Edit the aide configuration file 4. Initialize aide 5. Change the name of the aide database 6. Check whether the system files have changed. 7. Modify the / etc/issue file to test 8. More
Figure the data exchange process of the 1:TCP socket shows the process in which host A passes 200bytes to host B twice (divided into two packets). First, host A sends 100 bytes of data through a packet, and the Seq number of the packet is set to 1200. Host B for
Process communication refers to the exchange of information between processes. The PV operation is the primary communication method, and the hierarchical communication method refers to the communication method that transmits a small amount of data with high efficiency. Primary communication methods are mainly divided into the following three categories. Shared storage there is a shared space that can be visited directly between the communication processes.
Editor's note: as we all know, data center is a hot field of network research at present. With the rise and development of cloud computing, it will not only put forward more requirements for data center networks, but also provide more topics for academic research. This blog post will talk about 1) how to build a fatree network topology and 2) how to build a network topology in
Huawei AR3260 forgot password reset method (also suitable for other models of the same series of products) use a computer to use serial port cable to connect to the router through the Console port to restart the router, press Ctrl+B when the router appears the following message to enter the BootROM menu. BIOS C
1 start httpd service # service httpd restart2 test the web page http://172.16.40.1803 apache configuration file with another machine, the server listens on port 80, the document root directory: / v
Wechat newsletter fan retention rate. After adding, many fans will ask who you are, and we send some flattering words out of guilt, which makes fans very disgusted, and the deletion rate is naturally not low. In fact, people are very cheap, if you have a request to him, he has a high tone. Make sure he wants something from you, then it's easy.
To install, open the windows server 2003 operating system, click start-> all programs-> Control Panel-> add / remove programs, then click add / remove Windows components (A); locate and click the application server (English operating system: a)
Xiao Q: I've been in Beijing for a resume interview for a long time this week. I haven't been here for a long time; catch up on Saturday and come back to have a rest and review.
If the Conversion software is installed on the migrated computer, select local machine to prevent account password errors
Injection point: http://www..com/shownews.asp?id=471 to see if it can be injected: no injection, anti-injection system, use tools to break through! Injection transfer: scan with the tool: the user name and password are exposed (md5 encryption), and then find the background
First, the physical layer of the OSI seven-layer model: the analog signal is converted into a digital signal by hardware equipment, so there is a 0Compact 1 data stream, which is called bit stream. Data link layer: bitstreams can be sent, but if there is no format, it will be messy, so there are "frames". A "frame" data block is used for transmission.
