Hi, On our server, which is fairly busy web server, I see: $ sysctl -A | grep random kernel.random.entropy_avail = 0
Is this even an indication? Linux 2.4.9-21smp #1 SMP Thu Jan 17 14:01:48 EST 2002 i686 unknown Thanks Noam Rathaus CTO Beyond Security Ltd. http://www.securiteam.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Oded Arbel Sent: Wednesday, October 01, 2003 14:32 To: Linux-IL Subject: Help, Help, I've ran out of entropy! Hi list. I'm having a problem with a server, where apparently I don't have any entropy left in /dev/random : # sysctl -A | grep random kernel.random.entropy_avail = 0 and of course - every call to /dev/random blocks. the server in question is a headless box, so of course no entropy is generated by HID devices such as mouse and keyboard, but IIRC dev/random should also be filled by disc access (of which there is a lot) and maybe network (I remember a discussion on turning off entropy feeding from the NICs, but I don't remember if it was actually carried out). The kernel is 2.4.21 with grsecurity patches, and I was wandering if anyone has any idea what I can do now - can I somehow seed dev/random by hand ? All the file systems are reiserFS, which raises the following question - is it possible that reiserFS block I/O does not generate entropy ? -- Oded ::.. When you do not know what you are doing, do it neatly. ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
