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Modify the/proc/sys/net/ipv4/icmp_echo_ignore_all content to 1 to disable ping content for 0 to turn on Ping.Sysctl-w net.ipv4.icmp_echo_ignore_all=1 The effect of this order is ibid.There is another way to use the iptables-in Ping.Iptables-a input-p ICMP--icmp-type 8-s 0/0-j DROPThe ping command works by sending an ICMP request message to the destination IP and then the destination IP to reply to an ICMP message. The above command is to use the Iptab
1, # Chkconfig--list: Display the service that can start automatically on bootResults: iptables 0:off 1:off 2:on 3:on 4:on 5:on 6:off indicates that the iptables power on 2, 3, 4, 5-level service automatically.2. # chkconfig--ADD command name: Add Power on auto start command name ServiceChkconfig--add iptables: Boot automatically start iptables service;After power-on through the command iptables-l-n check whether the setting is successful;3. # chkconfig--del command name: Delete boot command nam
1. Disable/Restore Spotlight for Mac system:Enter the following in the terminal to disable:sudo launchctl unload-w /system/library/launchdaemons/com.apple.metadata.mds.plistIn the terminal, enter the following content recovery:sudo launchctl load-w /system/library/launchdaemons/com.apple.metadata.mds.plist2. Delete/Restore the spotlight icon for your Mac system:Enter the following in the terminal to delete:cd/system/library/coreservices/sudomv search.
Linux Disable display "buffering adjustment"[Email protected]:~$ free-o Total used free shared buffers cachedmem: 3103064 1586140 1516924 7724 66760 651072Swap: 3998716 0 3998716[email protected]:~$ Free--old total used free shared buffers cachedmem: 3103064 1587280 1515784 7724 66768 651072Swap: 3998716 0 3998716Linux
When we use the computer, what should we do if we encounter some problems that cannot be solved, or what important data is lost in the computer? Many people will pound to reload the system, so that the problem can be solved, in fact, we do not know, the computer has a System Restore settings, and the effect of the reload system is similar, can also help us solve a lot of problems. But there is also the disadvantage is that when we do not need to restore the system, in the event of inadvertently
of others, what do you intend to do? many people in order to "safe", they insist on using the computer (computer) in time to clean IE cache files, delete cookies work. Have to admire the perseverance of doing so every day, but there is a fact is undeniable-it is too troublesome to do so every day. So how simple and effective to prevent people from using cookies to spy on us? This can be achieved by directly to cookies. cookies are actually small packets of bread that contain information a
1, click the top right corner of the "Tools" button, and then click "Manage Add-ins." 2, please select "All Add-ins". All IE add-ons are displayed in the list on the right, with detailed add-in information and the load time of each add-in that you can determine based on the usage and load time of the add-in and which add-ons can be disabled. 3, select the add-on you want to disable, click "Disable
This article mainly introduces jquery disable right-click function Mask F5 refresh the specific implementation, need friends can refer to the next1. Disable right-click function code as follows: $ (document). Ready (function () {$ (document). Bind ("ContextMenu", function (e) {alert ("sorry! No right-clicking! "); return false; }); }); 2, shielding F5 Refresh copy code $ (document). Ready (function () {$ (
The first step: Press the Win+x key under the win8.1 desktop and choose Device Manager to open the following image: The second step: After opening Device Manager, we in the device list to expand the "image device", you can generally see that you have a device, is your camera, of course, some users may have installed a scanner and other equipment, the camera generally shows "CAMERA"; The third step: Right click on "Set Like Head" Select
1. Use the combination shortcut key +r to open the Run window, enter "regedit" carriage return confirmation. As shown in the following figure 2. Locate the Hkey_current_usersoftwaremicrosoftwindowscurrentversionpoliciesexplorer key value in the Open Registry Editor. As shown in the following figure 3. In the right margin of the interface, the right key new –dword32 named Nocdburning. As shown in the following figure 4. Double-click to open the new nocdburning, modify the
In order to improve the user experience, many software including some well-known sites have adopted some add-ons, when users browse the page or use the relevant software, will pop up the need for you to install the control prompts. While this improves the user experience, it's not a good thing to have too much load in IE browsers. Solving method Start IE Browser, click the tool button on the top right, the gear looks like, and then click Manage Add-ins from the menu that pops up.
1. Disabling MS-DOS mode Sometimes in order to be safe, we hide the partitions that contain important data, but other users can access the drive through MS-DOS. Therefore, for security reasons, you need to prevent users from using MS-DOS by doing the following: Open Registry Editor, and then expand the Hkey_current_user\software\microsoft\windows\currentversion\policies\winoldapp branch in turn ( If the Winoldapp branch does not exist, we can create a new. Right-click in the right window o
Some users of the use of notebook in typing, often encounter touch area, causing the cursor flying, bad positioning problem. So how to solve this problem! Now go and have a look! The solution to this problem is to disable the touch area and restart it when needed, as follows: 1. Go to Control Panel and double-click to open the mouse setting. 2. In the Mouse dialog box, select the Appliance Settings tab to disab
1. Use XInput list to view the ID associated with the touchpad, the following is the output of the machine, do not understand why the mouse!!![Email protected]:~$ xinput List? Virtual core pointer id=2 [master pointer (3)]? ? Virtual core XTEST pointer id=4 [slave pointer (2)]? ? HID Compliant-mouse hid Compliant-mouse id=11 [slave pointer (2)]? ? PS/2 Generic Mouse id=14 [slave pointer (2)]? Virtual core keyboard id=3 [Master keyboard (2)]? Virtual Core XTEST keyboard id=5 [slave keyboard (3)]?
Enable or disable the root user Choose Apple menu (?) > System Preferences, then click Users and groups (or accounts). Tap, and then enter the administrator name and password. Click Login Options. Click "Join" (or "edit"). Click Open Directory Utility. Click in the Directory Utility window, and then enter the administrator name and password. From the menu bar of the catalog utility: Choose Edit > Enable root user, and e
In the process of developing the website sometimes we do not want to let the customer see the source code of the page, even the text content on the page does not want to be copied, let's look at how to protect the page contentPrevent viewing of page source code and copying text from pagesWe all know that even if you set the Disable right button but click F12 still can see the source code, below we set to prohibit the use of F12Using the above JS code
In HTML pages because of the use of the form, you often need to disable enter to submit the form. Because the content page or the master page itself has type= "submit" button, when the TextBox is focused, pressing ENTER will touch the default submission of the publication (ie or Firefox), so you need to listen to the user's keys in onkeydown. The actual test, IE8 causes the form to submit the uncertainty factor to be too many, clicks the form table th
called the component before, you do not need to reboot, you can see the effect, otherwise please heavy Look at the effect after Kai. ) This time we look at the result of the original invocation method: Set fs=server.createobject ("Scripting.FileSystemObject") %> The results of this operation are: Server object error ' ASP 0177:800401f3 ' Server.CreateObject failure /aspimage/testfile2.asp, Line 3 800401f3 (OK, meet our requirements) This method because I was late two steps, the result let ot
Prohibit the use of PING commands under Linux Enter the Linux system with root and edit the file Icmp_echo_ignore_allVi/proc/sys/net/ipv4/icmp_echo_ignore_allTo disable ping after changing its value to 1To unblock ping after changing its value to 0 Direct modification prompts an error: Warning:the file has been changed since reading it!!!Do your really want to write to it (y/n)? y"Icmp_echo_ignore_all" E667:fsync failedHit ENTER or ty
At the same time suitable for IE, Firefox, Google browser to apply, after the filter code is as follows: Copy Code code as follows: Disable right key, text selection, copy key $ (document). Bind ("ContextMenu", function () {return false;}); $ (document). Bind ("Selectstart", function () {return false;}); $ (document). KeyDown (function () {return key (Arguments[0])}); Prompt warning when pressingFunction key (e) {var keynum;if (win
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