Author: Tang ZhangweiWith the popularization of computer knowledge, everyone's awareness of computer security is getting stronger and stronger. As we know, clearing the Temporary Internet Files folder on the Internet can delete website records we
Computer viruses have some basic characteristics. These basic characteristics mainly refer to infectious, destructive, and prank viruses. These are the basic features of common viruses, the most important feature of the next generation of viruses is
Recently, the leakage of confidential files of the Japanese Navy "Chao Xue" Destroyer on the Internet has been stirred up. The whole process of leaks was even "disclosed" in Japan's cord-breaking news. Originally, Cao Chang, the telecommunications
When hackers intrude into a host, they will try to protect their "labor results". Therefore, they will leave various backdoors on the zombie to control the zombie for a long time, the most commonly used is the account hiding technology. Create a
Bkjia.com integrated message: at present, network boundary security protection cannot effectively protect network security. Only border security and Intranet Security Management three-dimensional control is the way out.
Intranet security focuses on
The internal network security idea centered on data security management has been gradually recognized by the market. In addition to the traditional military, military, and other confidential entities, due to the intensification of global competition
"Three-Point Technology and seven-point management" is a famous saying in the Intranet security field. Large enterprises and organizations, small to each of us, are dealing with management all the time. outstanding management is the starting point
1. Accounts check
# Less/etc/passwd
# Grep: 0:/etc/passwd
Note that the new user, UID, and GID are 0 users.
2. Log check
Note "entered promiscuous mode"
Error Message
Note: Remote Procedure Call (rpc) programs with a log entry that includes des a
Audit Logon Events
This security setting determines whether to audit each instance of the user's logon or logout computer.
For domain account activity, account logon events are generated on the domain controller; for local account activity,
This article introduces the system security protection policy, allowing the system administrator to block intruders. Some improvement methods are discussed for different Linux systems.
Guide
Many people have begun to talk about intrusions into
For Linux (such as RHAS4), emails from the root account are generally stored on the local machine (/var/mail/root), and can be forwarded through the Sendmail alias list, add a line to the alias file/etc/aliases:
Root: root, user, xxx@xxx.com
To improve network management efficiency, network administrators often set up and install DHCP servers in the LAN, this server is used to automatically provide Internet settings for normal workstations. When a common workstation in the LAN is
When talking to some colleagues about the installation of Windows 7 RTM final pressure disk version), I specifically pointed out that the Windows system update should be run after the system is installed. Several System Administrators looked at me
With the increasing number of viruses and hackers on the network, many users are seeking for the safest operating system. When talking about this topic, someone will tell you that the Linux operating system is the safest. In fact, this is just
Bkjia.com exclusive: basic syntax of Iptables (better understanding of the gateway NAT script later ):
Iptables [-t table name] chain name [Rule number] [-I | o Nic name] [-p protocol type] [-s source IP address | source subnet] [-- sport source
1. Nagios has the following features:
1. network service monitoring (including SMTP, POP3, HTTP, NNTP, and PING)
2. server resource monitoring (CPU load, disk usage, etc)
3. You can easily customize the service monitoring plug-in you need.
4.
Port and vulnerability discovery and scanning are also necessary for enterprise risk assessment and management. As the saying goes: "The treasure of a thousand miles is destroyed by the ant nest ." Once an attacker finds a small vulnerability, the
Security has been a problem recently, such as Windows authentication, asymmetric encryption, digital certificates, digital signatures, TLS/SSL, and WS-Security. If time permits, I would like to write a series of articles to share and exchange with
Although the firewall has been the main security method for Internet connection for 25 years, during this period, attackers have targeted the protocol stack and bypassed the operating system or TCP/IP protocol, directly implements the HTTP, HTML,
With the rapid development of popular technologies such as big data, mobile Internet, and online video, this makes it necessary for network security devices to conduct more in-depth and comprehensive analysis of traffic, to solve the new security
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