Brett Trotter <[EMAIL PROTECTED]> writes: > Replying to myself, it seems that if I do an ssh and cat a bunch of data > from /dev/urandom through strings, eventually, the tunnel cant keep up and > data stops streaming. Funny enough though, if I hit a key, it still sends > data. It seems as if the ssh session got out of sync. Another ssh session > running simultaneously, but not actively communicating, remains happy once > the other dies.
I suggest taking tcpdumps on both sides on the tunnel device, and use -w file -s1500 to save them. When looking with -r file -vv you should be warned if there are checksum failures. Also, look at network statistics. On BSD I'd look at "netstat -s -p ip" and "netstat -s -p tcp" to look for packets discarded due to checkcum failure; I don't know how to get at the corresponding counters on Linux. Not with GNU Radio, but I have seen ssh sessions have trouble due to data corruption. I never figured out the source, but packets had ok tcp checksums but failed the CRC, so ssh closed the connection.
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