Date: Mon, 22 Sep 2003 19:17:55 +0400 From: Dmitry Agafonov <aga@rsm.ru> To: Pete French <pfrench@firstcallgroup.co.uk> Cc: stable@freebsd.org Subject: Re: Very slow SSh since upgrading machines to RELENG_4_8 Message-ID: <3F6F12A3.10809@rsm.ru> In-Reply-To: <E1A1S4Y-000LrX-00@mailhost.firstcallgroup.co.uk> References: <E1A1S4Y-000LrX-00@mailhost.firstcallgroup.co.uk>
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Hi! Is your client listed in DNS? That can be a reason... Pete French wrote: >Due to the recent OpenSSh security alert I have upgraded all our >machines to 4.8-RELEASE-p7 (they were running 4.6.2 before). > >We have two set of machines,- some here on 172.16.0.0 and some >in Jersey on 172.19.0.0 I can ssh from the machines here to the >machines in Jersey as normal, and I can also ssh back the same way. > >but if I try and ssh between two machines in Jersey then ssh pauses for >a considerable length of time before letting me in. By "considerable" >I mean over a minute. > >Preseumably the far end is trying to do something and then timing out, >but the question is *what* is it doing and how do I fix it ? Also >why did this only change when I upgraded ? > >The output from ssh -v is shown below to show the point at which is >is pausing... hope somebody can help here as its causing a lot of >inconvenience and a few real problems as it also affects rsync. > >help! > >-pcf. > >--------------- > > >bash-2.05a$ ssh -v websvr04 >OpenSSH_3.5p1 FreeBSD-20030917, SSH protocols 1.5/2.0, OpenSSL 0x0090701f >debug1: Reading configuration data /etc/ssh/ssh_config >debug1: Rhosts Authentication disabled, originating port will not be trusted. >debug1: ssh_connect: needpriv 0 >debug1: Connecting to websvr04 [172.19.84.0] port 22. >debug1: Connection established. >debug1: identity file /home/webadmin/.ssh/identity type -1 >debug1: identity file /home/webadmin/.ssh/id_rsa type -1 >debug1: identity file /home/webadmin/.ssh/id_dsa type 2 >debug1: Remote protocol version 1.99, remote software version OpenSSH_3.5p1 FreeBSD-20030917 >debug1: match: OpenSSH_3.5p1 FreeBSD-20030917 pat OpenSSH* >debug1: Enabling compatibility mode for protocol 2.0 >debug1: Local version string SSH-2.0-OpenSSH_3.5p1 FreeBSD-20030917 >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 sent >debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP >debug1: dh_gen_key: priv key bits set: 120/256 >debug1: bits set: 1585/3191 >debug1: SSH2_MSG_KEX_DH_GEX_INIT sent >debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY >debug1: Host 'websvr04' is known and matches the DSA host key. >debug1: Found key in /home/webadmin/.ssh/known_hosts:5 >debug1: bits set: 1604/3191 >debug1: ssh_dss_verify: signature correct >debug1: kex_derive_keys >debug1: newkeys: mode 1 >debug1: SSH2_MSG_NEWKEYS sent >debug1: waiting for SSH2_MSG_NEWKEYS >debug1: newkeys: mode 0 >debug1: SSH2_MSG_NEWKEYS received >debug1: done: ssh_kex2. >debug1: send SSH2_MSG_SERVICE_REQUEST >debug1: service_accept: ssh-userauth >debug1: got SSH2_MSG_SERVICE_ACCEPT > >...and here it pauses for 60 seconds or so... > >debug1: authentications that can continue: publickey,password,keyboard-interactive >debug1: next auth method to try is publickey >debug1: try privkey: /home/webadmin/.ssh/identity >debug1: try privkey: /home/webadmin/.ssh/id_rsa >debug1: try pubkey: /home/webadmin/.ssh/id_dsa >debug1: input_userauth_pk_ok: pkalg ssh-dss blen 434 lastkey 0x806d0e0 hint 2 >debug1: read PEM private key done: type DSA >debug1: ssh-userauth2 successful: method publickey >debug1: channel 0: new [client-session] >debug1: send channel open 0 >debug1: Entering interactive session. >debug1: ssh_session2_setup: id 0 >debug1: channel request 0: pty-req >debug1: channel request 0: shell >debug1: fd 3 setting TCP_NODELAY >debug1: channel 0: open confirm rwindow 0 rmax 32768 >Last login: Mon Sep 22 15:42:27 2003 from turpentine >Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994 > The Regents of the University of California. All rights reserved. > > > >_______________________________________________ >freebsd-stable@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-stable >To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > > > >
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