On Friday 19 January 2007 01:19, Brett L. Trotter wrote: > > Also you might be running out of entropy.. > > Saw the entropy problem when using /dev/random, but /dev/urandom seems > happier- in either case, at some point, ctrl+c's quit working and the > session basically locks up (with scp, it eventually stalls out- the most > I transferred was a MiB)- but typing causes packets to traverse the > tunnel even though the typed text does not render, nor seem to reach the > other end. I ran a ping -A and lost '0%':
Hmm, at least in FreeBSD urandom will give you randomness even when the entropy pool is empty, whereas random will not. I believe that reading from urandom will consume entropy if it is available - this could cause a problem if SSH later needs randomness as it will block reading from urandom. > So bottom line is, the ssh dies off. I'm going to try out the tcpdump > suggestion from Greg Troxel and see what things look like. Good idea :) > It's possible that the interface is seeing so many errors that the > checksums occasionally work out despite the errors- I'm going to also try > increasing the symbols/sample. Hmm, but TCP will correct for these errors - it only uses 32 bit CRC but it's not that likely to give a false positive. -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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