Port ing principle
To connect a computer on the Intranet to the Internet, port ing is required.Port ing is divided into dynamic and staticDynamic port ing:A computer in the Intranet will send packets to the NAT gateway to access xinlang. the packet header includes the IP address, port, and local IP address and port of the other party (I .e. xinlang network, the NAT gateway will replace the local IP address
Development, try to obtain the score information in the university teaching system. The educational administration system of our school can only be accessed through the Intranet (only Intranet IP addresses ). Is there any way to access the Intranet IP address from the Internet (server? I have an intranet machine on han
Intranet is a major component of network applications, and its security has been paid more and more attention. According to incomplete statistics, 15% of the investment in building an intranet outside China is used to enhance the network security of the Intranet. Security vendors maintain a strong growth momentum in China's IT market. The proportion of investment
: Class C network address 192.168.0.1 and the corresponding default shielding value 255.255.255.0.Determine the destination address of the packetWe say that the "and" operation of shielding values and IP addresses is an internal process that determines whether a packet is passed to a host on a local or remote network. The corresponding procedure is this: when the TCP/IP initialization, the host's IP address and subnet mask value phase "and". Before the packet is sent, the destination address and
Find the private channel for the VPN Intranet to log on to the Internet. The author is located in a branch. There are two network lines, one is frame relay to the headquarters of the company, and the other is the normal ADSL bandwidth, only 512 K. The entire branch uses the K broadband Internet shared by each user, the available bandwidth becomes very small, and the network application experience is not smooth. I have heard that the Internet egress ba
Bkjia.com exclusive Article: Intranet security is no longer an issue that needs to be avoided, but a question of how to manage it. To describe Intranet security in one sentence, it is a "old saying, I have to talk about it ". It is not a matter of time to fully grasp this complicated learning. Therefore, this article briefly discusses the scope and characteristics of In
Bkjia.com exclusive interview] The intranet is the most core and confidential platform of the enterprise network. The security of the Intranet not only affects the security of enterprise information, but also is a key issue to ensure business continuity.
Different industries have different requirements for Intranet security. All aspects of enterprise network arch
To protect Intranet security, I believe that firewall programs are installed on the Intranet of the vast majority of organizations. As a result, the idea of many network administrators attempting to remotely control the Intranet workstation on the internet is forcibly "contained. This is not the case. Because my local network is installed with a firewall and only
Theory of Proactive Defense System of lateral view
Lateral view Intranet Security ManagementThe system focuses on Actively controlling risks rather than Passively responding to events, improving the effectiveness and manageability of the entire information security system. With active Intranet security management and Intranet security control, the security risks
Almost all enterprises have paid more attention to network security. They have successively purchased firewalls and other devices to block security factors from the Internet. However, Intranet attacks and intrusions are still rampant. Facts have proved that the company's internal insecurity is far more terrible than the external harm.
Most enterprises pay attention to improving the border security of enterprise networks, but do not mention their inves
[Post] Six secrets of Intranet Security Post by: 2009-8-18 12:20:00
The development of the information industry has dramatically changed people's lives. However, it has also laid the groundwork for many security risks: data loss, information leakage, worms, and network abuse. Data shows that 70% of enterprise users in China are at a "high risk" level, and the annual economic losses caused by network leaks reach tens of billions.
BT Operation Principle Analysis and Intranet speed-up method (transfer)
Because Intranet users cannot provide an external port, they cannot act as servers. however, when using BT, we found that it could allow Intranet users to send messages. As a programmer, we couldn't help downloading its source code for analysis (to see it, I also specifically wrote Python :})
As an omnidirectional Security Network Technology in Intranet security, it uses a flexible key management solution to implement secure network communication between any two computer terminals in an open network.
1. Overview of omnidirectional Security Network Technology
Omni Directional Secure Network (ODSN) is a patented technology applied by Ming Dynasty Wanda. Omnidirectional security network technology uses flexible key management solutions to eff
The idea of Intranet penetration is derived from the idea of Trojan horse-bastion hosts are the easiest way to break through from the inside. A large website, a large company, a large target, and an external target, administrators will always do everything they can to strengthen prevention and fix vulnerabilities. It is almost impossible to use conventional methods.
The breakthrough of Intranet penetration
I once saw an article on the Internet that introduced a method for direct access to the Intranet. In fact, we only need to use the port ing tool to easily penetrate the Intranet. Port er is a tool like this. It is even more worth mentioning that it breaks away from the command line mode and provides a graphic interface operating environment.
I. Basic Ideas
To help you better understand the principle, let me
Article 1
1. Set a gateway in the attributes of one network card (for example, you can set one of the two Intranet segments and one Intranet for the convenience of setting up the Internet). Leave the other gateway blank first.
2. Run cmd. Run the "route-p add Intranet CIDR Block mask subnet mask Intranet Gateway (lef
One, dynamic public network IP environment1, Environment Description:Routers are assigned a dynamic public IP and have routing management privileges, and Linux hosts are deployed in the routed intranet. How to implement external network SSH access to intranet Linux host?2. Solution:Use nat123 dynamic Domain name resolution to solve dynamic public network IP problems.3, the implementation process:Method One:
Based on the current situation and problems of Intranet security, the technology alone cannot guarantee the competitiveness, or even the actual protection effect. These core causes of Intranet security problems can be solved only when the security management methods and security product management capabilities reach a certain level. In the face of increasingly complex application environments, administrator
Figure text: udb311 topic: MSSQL Intranet penetration case analysis published: Black and White Front Line Description: it has always been mysterious to the Intranet penetration technology, and a webshell is an intranet server. I would like to take this opportunity to practice the Intranet intrusion penetration technolo
The current work environment cannot be connected to the Internet, but there are some wireless hotspots around, use a laptop to connect to the wireless network, you can access the Internet, but if you connect to the Intranet, you can not connect to the Internet, this is very troublesome, so I try to find some ways to solve this problem, so that the Intranet and the Internet can be connected at the same time
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