Date: Fri, 15 Jul 2011 22:12:46 -0500 From: Paul Schmehl <pschmehl_lists@tx.rr.com> To: FreeBSD-Questions <freebsd-questions@freebsd.org> Subject: Problems with sshd Message-ID: <4A4020F82CF8BB4C8C928EFC@UTD69340.local>
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I manage a small hobby website for some friends. The system has been running fine for quite a while, but suddenly the owners are having problems using WinSCP to transfer files to the server. The only thing that has changed recently is their internet service, and I'm inclined to think that's the cause. They are using a Verizon hotspot, whatever that is. (They live in the country, and options for internet service are limited.) But I'm the thorough sort, so I've enabled verbose logging and been googling for possible causes. One thing I've noticed is that their IP address changes quite frequently, but this snippet from the log shows that it also happens with the same IP. (I changed the username to protect their privacy.) Checking the archived logs, which go back several months, the "error: ssh_msg_send: write" entry appears occasionally whenever they login using WinSCP, so I assume it's some incompatibility about the program that rears its ugly head from time to time. I suspect it has no significance wrt this particular problem. Any thoughts on possible things to check for would be most welcome. Jul 15 07:19:33 www sshd[55490]: subsystem request for sftp Jul 15 07:30:03 www sshd[55529]: Accepted keyboard-interactive/pam for user from 166.248.39.94 port 40850 ssh2 Jul 15 07:30:03 www sshd[55544]: subsystem request for sftp Jul 15 07:39:56 www sshd[55564]: error: ssh_msg_send: write Jul 15 07:43:14 www sshd[55570]: error: ssh_msg_send: write Jul 15 07:46:39 www sshd[55596]: Accepted keyboard-interactive/pam for user from 166.248.39.94 port 40851 ssh2 Jul 15 07:46:40 www sshd[55608]: subsystem request for sftp Jul 15 07:49:31 www sshd[55610]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27437 ssh2 Jul 15 07:49:32 www sshd[55613]: subsystem request for sftp Jul 15 07:56:59 www sshd[55634]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27436 ssh2 Jul 15 07:57:00 www sshd[55637]: subsystem request for sftp Jul 15 08:26:15 www sshd[55751]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27440 ssh2 Jul 15 08:26:15 www sshd[55755]: subsystem request for sftp Jul 15 08:30:59 www sshd[55779]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 48390 ssh2 Jul 15 08:30:59 www sshd[55782]: subsystem request for sftp Jul 15 08:47:07 www sshd[55852]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27446 ssh2 Jul 15 08:47:07 www sshd[55855]: subsystem request for sftp Jul 15 09:01:26 www sshd[55897]: error: ssh_msg_send: write Jul 15 10:55:48 www sshd[56416]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27426 ssh2 Jul 15 10:55:49 www sshd[56419]: subsystem request for sftp Jul 15 11:44:02 www sshd[56579]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27449 ssh2 Jul 15 11:44:03 www sshd[56595]: subsystem request for sftp Jul 15 11:48:22 www sshd[56615]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27433 ssh2 Jul 15 11:48:22 www sshd[56618]: subsystem request for sftp Jul 15 11:51:24 www sshd[56624]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 51389 ssh2 Jul 15 11:51:24 www sshd[56627]: subsystem request for sftp Jul 15 12:04:22 www sshd[56717]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27430 ssh2 Jul 15 12:04:22 www sshd[56720]: subsystem request for sftp Jul 15 12:08:35 www sshd[56725]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 51383 ssh2 Jul 15 12:08:36 www sshd[56728]: subsystem request for sftp Jul 15 12:11:55 www sshd[56755]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 51361 ssh2 Jul 15 12:11:56 www sshd[56758]: subsystem request for sftp Jul 15 12:36:39 www sshd[56855]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 21268 ssh2 Jul 15 12:36:39 www sshd[56858]: subsystem request for sftp Jul 15 12:44:02 www sshd[56863]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27452 ssh2 Jul 15 12:44:02 www sshd[56879]: subsystem request for sftp Jul 15 12:49:20 www sshd[56904]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27454 ssh2 Jul 15 12:49:20 www sshd[56907]: subsystem request for sftp Jul 15 12:53:25 www sshd[56918]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27424 ssh2 Jul 15 12:53:25 www sshd[56921]: subsystem request for sftp Jul 15 12:57:42 www sshd[56951]: Accepted keyboard-interactive/pam for user from 166.248.39.172 port 27425 ssh2 Jul 15 12:57:42 www sshd[56954]: subsystem request for sftp Paul Schmehl, If it isn't already obvious, my opinions are my own and not those of my employer. ****************************************** "When intelligence argues with stupidity and bias, intelligence is bound to lose; intelligence has limits, but stupidity and bias have none."
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