Summary of methods to solve server ping failure

Many webmasters often encounter that the website can be opened normally during the operation of the website, but the ping is unreachable. This situation may be caused by the following types: network problems, host downtime, firewall is blocked Interception, etc., how to solve it specifically, and listen to the relevant introduction of IDGlobal~

Introduction to ways to solve server ping failure

1. Prevent Ping through advanced settings

This method can disable all Internet Control Message Protocol (ICMP) options, once selected, the probability of being attacked will be greatly reduced.

2. Block Ping through network firewall

This is the simplest method. Most of the firewalls on the market currently have the function of ICMP filtering, and the "defense ICMP type attack" rule, Eliminate the "allow others to use the ping command to detect this machine" rule, and it will take effect after saving the application.

3. Enable IP security policy to prevent Ping

IP security policy anti-ping is IPSec policy, which is to protect the smooth flow of ping by configuring IPSec security services. You can configure IPSec policies to meet the needs of computers and applications , organizational unit, domain, site, or global enterprise security needs. You can use the "IP Security Policy" snap-in provided in Windows XP to define IPSec policies for computers in Active Directory (for domain members) or local computers (for computers that do not belong to a domain).

4. Prevent Ping by modifying the TTL value

The most commonly used by many intruders is to judge the operating system through the TTL value. They will ping your host in advance, and if they see the TTL value is 128 Just think your system is WindowsNT/2000. Since the intruder believes the result reflected by the TTL value, we might as well modify the TTL value to deceive the intruder and achieve the purpose of protecting the system.

The above is the summary of the methods and methods to solve the server ping failure.