Supporting Network Management System; Enabling Icmp Echo Requests; Enable Temporary Ping; Enable Persistent Ping - HP 800 User Manual

Supporting Network Management
System
This section describes Network Management System (NMS) settings.

Enabling ICMP Echo Requests

The default configuration for NAC 800 is to not respond to ICMP Echo (ping)
requests.

Enable Temporary Ping

To temporarily (until reboot) enable ICMP echo requests:
Command line
1. Log in to the NAC 800 server as root using SSH or directly with a keyboard.
2. Open the following file with a text editor such as vi:
/proc/sys/net/ipv4/icmp_echo_ignore_all
3. This file contains only the number 1, which disables pings. Change this to
the number 0 to allow pings. This file gets written to at boot, so pings will
again be disabled after the next reboot.

Enable Persistent Ping

To persistently enable ICMP echo requests:
Command line
1. Log in to the NAC 800 server as root using SSH or directly with a keyboard.
2. Open the rc.local file with a text editor such as vi. For example:
/etc/rc.d/rc.local
3. In the # Ignore All ICMP requests area, change the following line:
echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all
System Administration

Supporting Network Management System

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