Differences between version 2 and predecessor to the previous major change of SysctlNotes.
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| Newer page: | version 2 | Last edited on Tuesday, April 17, 2007 3:45:47 pm | by IanMcDonald | Revert |
| Older page: | version 1 | Last edited on Tuesday, April 17, 2007 12:55:17 pm | by BenStaz | Revert |
@@ -8,9 +8,9 @@
!Modify the value of a kernel parameter:
*sysctl -w variable=value
-For example say I do not want my host to respond to pings:
+For example say I do not want my host to respond to pings (note that this is recommended)
:
This can be done by telling the kernel to ignore all ICMP ECHO_REQUEST's
*sysctl -w net.ipv4.icmp_echo_ignore_all=1
@@ -22,4 +22,10 @@
1. Setting this variable to 1 (or anything other than 0) will make the kernel ignore ICMP echo request's.
2. The 'net.ipv4.icmp_echo_ignore_all' part above specifies the path inside /proc/sys/ to the file corresponding to the kernel parameter. If you use cat to take a look inside this file you will see that all in contains is '1' (the value of the kernel variable)
+
+If you want to save these in a file it's usually in /etc/sysctl.conf (see [sysctl.conf(5)])
+----
+CategoryNotes
+----
+See also [sysctl(8)], [sysctl(2)], SysControls
