SSL (Secure Sockets Layer) and its successor Transport Layer Security (TLS) are a Security protocol that provides Security and data integrity for network communication. TLS and SSL encrypt network connections at the transport layer.
SSL (Secure Socket Layer) is developed by
First, enhance the security Protection tool
SSH is the acronym for a Secure Sockets Layer, which is a set of programs that can be safely used to replace common programs such as Rlogin, rsh, and RCP. SSH uses public key technology to encrypt communication information between two hosts on the network and uses its key to
, allow the firewall to agree to visit the user and data into their internal network, while not allowed to shut out users and data, to prevent hackers outside the network to access their own network, to prevent them from arbitrarily changing, moving or even delete important information on the network.
Firewall is a ki
network security. Because VLANs can isolate broadcast, different VLANs cannot communicate with each other, so they have a certain degree of security.
5. Port isolation
With the port isolation feature, you can add the ports to be controlled to an isolation group to isolate ports in the isolation group from Layer 2 and Layer 3 data, enhancing
Tutorial Background:Xiaonuo has used Linux to build various servers (FTP, DNS, Apache, Sendmail, and Samba), because these servers are placed in a safe place, generally, no one is allowed to access these servers. The company now needs to securely access these servers through remote clients. SSH is a standard network protocol that can be used in most UNIX operating systems to achieve remote login management on the Character interface. It uses port 22 b
interruption, the system supports setting off-line policy and time limit; Under normal policy permissions, users can use security domain and quarantine data off-line normally, but prohibit unauthorized export and network outbound, the system will record the operation log and audit in detail.
7. Data Security Outgoing
When important documents in the
Key Technologies and implementations of trusted cloud security
Basic Information
Author: Li Hong Li HaoPress: People's post and telecommunications PressISBN: 9787115229939Mounting time:Published on: February 1, June 2010Start: 16For more details, see: http://www.china-pub.com/51125
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Key cloud security
NAC Network Access Control) is a huge topic widely discussed in the industry and also the focus of many vendors. Over time, this acronym has almost become a popular term that is overused, and there are also many variants in definition. When I asked some itmanagers how they defined NAC, they agreed that NAC involves three factors:· Access Control, which selectively allows a host to join into the network and
Apache has always been the top three Web server software in the world. Enterprises need to comprehensively consider the security of their Web applications to ensure they can respond to network threats such as denial of service (DoS) attacks, traffic eavesdropping, and data leakage, this ensures the security of enterprise portal websites.
In addition to the indust
transmission, but not the use of security can be high WAP protocol to protect the transmission of wireless signals. Ordinary Internet users even use the WEP encryption protocol, with WEP key settings, the illegal attacker can still easily decipher the encrypted signal through some professional attack tools, making it very easy to intercept information such as the client's Internet address,
Network Access Control-protecting network security
Emerging cyber security threats such as viruses, worms, and spyware continue to harm the interests of customers and cause organizations to lose a lot of money, productivity, and opportunities. At the same time, the popularit
unclear security policies written in the enterprise employee manual. For example, an employee may send an email containing important files to an incorrect recipient, or use a P2P file sharing website based on the network to send large files to business partners, they may not know that they have lost ownership and control of important data after uploading materials.
The
series, which describes how to achieve the security of IPv6 networks at these 3 levels.
Protocol security
The extension headers in IPv6 's AH (Authenticationheader) and ESP (encapsulatingsecurity payload) combine a variety of cryptographic algorithms to provide security at the protocol level. As shown in Figure 1 of the actual
. You can also configure a rule to be applied with any profile or only when the specified profile is used, and you may have to change, create, disable, or delete rules when the IT environment changes.Implementation of connection security:Connection security involves authenticating the two computers before they begin to communicate and ensuring the security of the information sent between the two computers.
tactical security considerations and implementation within the architecture.
4. Summary
When deploying cloud computing models, it is critical to understand how the architecture, technology, processes, and human capital are changing or remain unchanged. If you do not have a clear understanding of the impact on a higher level of architecture, it is impossible to rationally solve those details. Together with the other 12
a proxy server and a filter router, in combination with the software proxy technology, a certain amount of information filtering data is established to allow data that meets the filtering rules to pass. Otherwise, the data is not allowed to pass, and then the router and network connection are filtered, send the filtered data to the proxy server. firewall technology can provide network
, then the 300 meters within the range of installed wireless network card equipment of the ordinary computer can automatically join the local wireless LAN network, That way, local wireless LANs are vulnerable to illegal attacks.
The security drawbacks of low grade network
1, Wireless LAN
expire. In this case, the normal filtering of the destination address and port number is used. Unless you invade the PIX itself, external users still cannot understand the internal network structure. Without understanding the internal network structure, a malicious user cannot execute an attack from an internal host to an internal network.
Another
versions is greatly improved. When setting the Kernel function, you only need to select the necessary functions. Do not accept all functions as per your order. Otherwise, the Kernel will become large, occupying both system resources and leaving hackers with an opportunity.
There are often the latest security patches on the Internet. Linux administrators should be well-informed and often patronize Security
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