Actually the problem seems to have been sorted out. Right after placing in the sshd_config file "UseDNS no" and reloading/restarting the OpenSSH server, no effect took place, but a few hours later my ssh response became instant (<1 sec) :) Strange.. Mike On Tue, Apr 12, 2011 at 7:15 PM, Michael Sioutis <papito.dit@xxxxxxxxx> wrote: > Hello!! > > I have a slow ssh response time and I don't know what is causing it. > I'm providing you with some information and kindly requesting > your help. > > ***System*** > Linux Ubuntu 10.04.2 LTS 2.6.32-30-generic #59-Ubuntu SMP Tue Mar 1 > 21:30:46 UTC 2011 x86_64 GNU/Linux > > ***OpenSSH version*** > OpenSSH_5.3p1 Debian-3ubuntu6, OpenSSL 0.9.8k 25 Mar 2009 > > ***Problem*** > ssh -v user@host > OpenSSH_5.5p1 Debian-4ubuntu5, OpenSSL 0.9.8o 01 Jun 2010 > debug1: Reading configuration data /etc/ssh/ssh_config > debug1: Applying options for * > debug1: Connecting to host [XX.XXX.XX.XXX] port 22. > debug1: Connection established. > debug1: identity file /home/user/.ssh/id_rsa type 1 > debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 > debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 > debug1: identity file /home/user/.ssh/id_rsa-cert type -1 > debug1: identity file /home/user/.ssh/id_dsa type -1 > debug1: identity file /home/user/.ssh/id_dsa-cert type -1 > > --------------->Delay (4-5 secs)<--------------- > > debug1: Remote protocol version 2.0, remote software version > OpenSSH_5.3p1 Debian-3ubuntu6 > debug1: match: OpenSSH_5.3p1 Debian-3ubuntu6 pat OpenSSH* > debug1: Enabling compatibility mode for protocol 2.0 > debug1: Local version string SSH-2.0-OpenSSH_5.5p1 Debian-4ubuntu5 > debug1: SSH2_MSG_KEXINIT sent > debug1: SSH2_MSG_KEXINIT received > debug1: kex: server->client aes128-ctr hmac-md5 none > debug1: kex: client->server aes128-ctr 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 'host' is known and matches the RSA host key. > debug1: Found key in /home/user/.ssh/known_hosts:9 > debug1: ssh_rsa_verify: signature correct > debug1: SSH2_MSG_NEWKEYS sent > debug1: expecting SSH2_MSG_NEWKEYS > debug1: SSH2_MSG_NEWKEYS received > debug1: Roaming not allowed by server > debug1: SSH2_MSG_SERVICE_REQUEST sent > debug1: SSH2_MSG_SERVICE_ACCEPT received > debug1: Authentications that can continue: publickey,password > debug1: Next authentication method: publickey > debug1: Offering public key: /home/user/.ssh/id_rsa > debug1: Authentications that can continue: publickey,password > debug1: Trying private key: /home/user/.ssh/id_dsa > debug1: Next authentication method: password > user@host's password: > > ***sshd_config file*** > Port 22 > Protocol 2 > HostKey /etc/ssh/ssh_host_rsa_key > HostKey /etc/ssh/ssh_host_dsa_key > UsePrivilegeSeparation yes > > KeyRegenerationInterval 3600 > ServerKeyBits 768 > > SyslogFacility AUTH > LogLevel INFO > > LoginGraceTime 120 > PermitRootLogin no > StrictModes yes > > RSAAuthentication yes > PubkeyAuthentication yes > > IgnoreRhosts yes > RhostsRSAAuthentication no > HostbasedAuthentication no > > PermitEmptyPasswords no > > ChallengeResponseAuthentication no > > X11Forwarding yes > X11DisplayOffset 10 > PrintMotd no > PrintLastLog yes > TCPKeepAlive yes > > AcceptEnv LANG LC_* > > Subsystem sftp /usr/lib/openssh/sftp-server > > UsePAM yes > UseDNS no > AllowUsers user > > Thank you for any information about this! > Mike >
