Date: Sun, 20 Mar 2005 18:12:29 -0600 From: darren <freebsd@usmstudent.com> To: freebsd-questions@freebsd.org Subject: ssh password delay Message-ID: <423E116D.50805@usmstudent.com>
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I could use some help troubleshooting a problem that I am having with long delays before receiving a password prompt when I log onto my FreeBSD box via ssh. I have done quite a bit of googling and I realize that the problem likely has something to do with reverse DNS lookups. But, I don't know how to pinpoint the problem from there. I've basically been playing with the /etc/resolv.conf and /etc/hosts settings. In my hosts file, I have an entry for the private IP of my Linux box with its hostname (which is not a FQDN) and my resolv.conf file looks like: domain myrealdomain.com //I just added this, but no noticeable help search myrealdomain.com nameserver my.ip's.dns.numbers nameserver my.ip's.dns.numbers2 Here's a more detailed explanation of the problem. To me, the problem seems very peculiar. The problem only exists whenever I use my laptop (which is running Linux) from within my own LAN. I can get around it by logging onto my ISP's server or my school's server (either one) and then logging back into my FreeBSD box from there. If I am at school with my laptop, I can even log into my FreeBSD server at home directly without a delay. But, if I try going directly to my FreeBSD box from my laptop when they are both inside the LAN, I get a very long delay (like 3 minutes). Sometimes the delay is so long, the connection times out and I never get a prompt. I have set the logging level up to DEBUG3 in the /etc/sshd_config file. But, I don't see where any verbose output is going. This problem is on FreeBSD 4.10-RELEASE. TIA, backdoc The /var/log/auth.log file just says: ... fatal: Timeout before authentication for 192...... Here's what my laptop spits out before the long delay kicks in. root@laptop:/home/backdoc # ssh -vl backdoc 192.168.1.4 OpenSSH_3.9p1 Debian-1ubuntu2, OpenSSL 0.9.7e 25 Oct 2004 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to 192.168.1.4 [192.168.1.4] port 22. debug1: Connection established. debug1: permanently_set_uid: 0/0 debug1: identity file /root/.ssh/identity type -1 debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: Remote protocol version 1.99, remote software version OpenSSH_3.5p1 FreeBSD-20030924 debug1: match: OpenSSH_3.5p1 FreeBSD-20030924 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_3.9p1 Debian-1ubuntu2 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-cbc hmac-md5 none debug1: kex: client->server aes128-cbc hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host '192.168.1.4' is known and matches the DSA host key. debug1: Found key in /root/.ssh/known_hosts:1 debug1: ssh_dss_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received
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