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| What rICMP is |
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The rICMP tool is a Linux kernel patch that interacts with the TCP/IP stack. The patch let you reboot your (probably hanged) machine remotely, using a simple ICMP Echo packet (also known as ping :)). Obviously, the only prerequisite for this operation is having the target host have an "alive" TCP/IP stack. This is almost true, except for some Catastrophic kernel panics. This patch should be functionally compatible with most Halted Firewall patches and has been used extensively as a embedded systems add-on. |
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Basic components |
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rICMP is composed by a linux kernel patch which implements all low level functions, plus a set of userland tools. The patch implements basic reboot capability and a small set of rules to filter hosts that may perform the magic ping. Also, the magic ping must contain a configurable password to be effective. The user lands tools let you configure the password, in both hex or ascii format, IP filters, by accepting denying and/or logging reboot requests |