Posts tagged as:

ping request

Simple Linux and UNIX system monitoring with ping command and scripts

by nixcraft · 12 comments

You can simply monitor your remote system hosted some remote IDC. There may be tons of causes for which system goes out the network.
Understanding ping command
ping is one of the basic and nifty command to test network connection. For example you can send 4 ping request to cyberciti.biz with following command:
$ ping -c 4 cyberciti.biz
$ [...]

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Linux Iptables allow or block ICMP ping request

by LinuxTitli · 18 comments

The Internet Control Message Protocol (ICMP) has many messages that are identified by a “type” field. You need to use 0 and 8 ICMP code types.
=> Zero (0) is for echo-reply
=> Eight (8) is for echo-request.
To enable ICMP ping incoming client request use following iptables rule (you need to add following rules [...]

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