用access-list 对抗 “ 冲击波 ” 病毒 最近“ 冲击波 ” 病毒 ”(WORM_MSBlast.A)开始在国内互联网和部分专网上传播。我以前在接入层做的access-list起了作用! 大家可以参考之 access-list 120 deny 53 any any access-list 120 deny 55 any any access-lis
用access-list 对抗“冲击波”病毒最近“冲击波”病毒”(WORM_MSBlast.A)开始在国内互联网和部分专网上传播。我以前在接入层做的access-list起了作用!
大家可以参考之
access-list 120 deny 53 any any
access-list 120 deny 55 any any
access-list 120 deny 77 any any
access-list 120 deny 103 any any
以上几条慎用!
access-list 120 deny tcp any any eq echo
access-list 120 deny tcp any any eq chargen
access-list 120 deny tcp any any eq 135
access-list 120 deny tcp any any eq 136
access-list 120 deny tcp any any eq 137
access-list 120 deny tcp any any eq 138
access-list 120 deny tcp any any eq 139
access-list 120 deny tcp any any eq 389
access-list 120 deny tcp any any eq 445
access-list 120 deny tcp any any eq 4444//新加
access-list 120 deny udp any any eq 69 //新加
access-list 120 deny udp any any eq 135
access-list 120 deny udp any any eq 136
access-list 120 deny udp any any eq 137
access-list 120 deny udp any any eq 138
access-list 120 deny udp any any eq 139
access-list 120 deny udp any any eq snmp
access-list 120 deny udp any any eq 389
access-list 120 deny udp any any eq 445
access-list 120 deny udp any any eq 1434
access-list 120 deny udp any any eq 1433
access-list 120 permit ip any any
附录:处理办法!
**********************************
(1)对于未感染的主机:
建议安http://microsoft.com/technet/securi...p中指定的patch.
(2)对于已感染的系统:
可能无法从Microsoft升级补丁,建议用以下方式处理:
I. 断掉机器的物理网络连接。
II. 执行注册表编辑命令:regedit, 检查
"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
CurrentVersion\Run\windows auto update" 中是
否存在 msblast.exe的键值,如果存在则删除。
III.运行任务管理器,关闭msblast.exe进程。
IV.完成用下述两种*作之一:
a.关闭DCOM: 设置HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ole
中EnableDCOM键值为N.
b.设置防火墙或Microsoft's Internet
Connection Filter (ICF)阻止Incoming方向的以下端口:
69/UDP 135/TCP 135/UDP 139/TCP
139/UDP 445/TCP 445/UDP 4444/TCP。
V. 重新联接网络,安装http://microsoft.com/technet/securi...p中指定的patch.

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

The steps to build a MySQL database include: 1. Create a database and table, 2. Insert data, and 3. Conduct queries. First, use the CREATEDATABASE and CREATETABLE statements to create the database and table, then use the INSERTINTO statement to insert the data, and finally use the SELECT statement to query the data.

MySQL is suitable for beginners because it is easy to use and powerful. 1.MySQL is a relational database, and uses SQL for CRUD operations. 2. It is simple to install and requires the root user password to be configured. 3. Use INSERT, UPDATE, DELETE, and SELECT to perform data operations. 4. ORDERBY, WHERE and JOIN can be used for complex queries. 5. Debugging requires checking the syntax and use EXPLAIN to analyze the query. 6. Optimization suggestions include using indexes, choosing the right data type and good programming habits.


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