Entropy Key on Centos 6.2 & EGD

[Daniel Silverstone]

On Mon, Apr 30, 2012 at 06:25:55PM +0200, Jan-Piet Mens wrote:
> I've done that, but there is no change: upon starting egd-linux I see
> the following packets:
> 
> 18:24:31.036239 IP 192.168.1.218.48833 > 192.168.1.10.ddi-tcp-1: Flags [S], seq 118449058, win 14600, options [mss 1460,sackOK,TS val 351777119 ecr 0,nop,wscale 5], length 0
> 18:24:31.036333 IP 192.168.1.10.ddi-tcp-1 > 192.168.1.218.48833: Flags [S.], seq 3317590712, ack 118449059, win 14480, options [mss 1460,sackOK,TS val 696576812 ecr 351777119,nop,wscale 7], length 0
> 18:24:31.036639 IP 192.168.1.218.48833 > 192.168.1.10.ddi-tcp-1: Flags [.], ack 1, win 457, options [nop,nop,TS val 351777119 ecr 696576812], length 0

egd-linux uses the watermarks to decide when to request entropy from the
server.  You should double check the watermarks which are in
/proc/sys/kernel/random as write_wakeup_threshold and read_wakeup_threshold --
they're in bits and the write_wakeup_threshold I think governs when egd-linux
will wake up and ask for entropy from the server.

D.

-- 
Daniel Silverstone                         http://www.digital-scurf.org/
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