07-22-2008
Delays when ssh'ing in are almost always DNS related. To diagnose this, ssh into the machine from a known good box (that doesn't see the delays elsewhere) with the command line "ssh -vv username@hostname" and see where the delay is. It's likely that the server that is giving you the delay is trying to reverse lookup the IP of the machine you are sshing from and timing out (hence the delay).
To fix, edit your ssh config ("/etc/ssh/sshd_config") and add a "UseDNS no" line (or change the existing one to this).
Then restart your sshd via "sudo /etc/init.d/ssh restart".
Hope that helps.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I stupidly changed the shell of the root user to one that does not exist, and now when I try to lgon it says it cannot find the path to my shell and will not let me proceed any further. Is there any way I can get round this without re-installing the OS?
Thanks for any replies. (8 Replies)
Discussion started by: SRP
8 Replies
2. SCO
Hellow,
I am using SCO Unixware version 7.1.1 on a machine, when I start this machine, after logon, one message window appears " Message ! with Ok button ", when I click on Ok button it again goes to logon windows.
Can somebody help me regarding this.
Thanks in advance... (0 Replies)
Discussion started by: tayyabq8
0 Replies
3. Shell Programming and Scripting
Hi, I need to run a command remotely, rsh is disabled so I'm trying to do this:
ssh myserver ls -lst /work/jsf
The problem is that this prompts for a password and I want to do it in a shell script. How can I pass the password without user interaction? I tried "echo mypass | ssh_command" and... (1 Reply)
Discussion started by: rocky_triton
1 Replies
4. UNIX for Dummies Questions & Answers
Hi:
I am wondering if anyone has a logon script to be put in /etc/profile or environments that will display the logged on username and path? (4 Replies)
Discussion started by: capeme
4 Replies
5. Shell Programming and Scripting
hi
how can I know abt the details of current user who are logged on and as well as those users who currently have an account but are not logged on?
Thanks (1 Reply)
Discussion started by: nokia1100
1 Replies
6. AIX
how do I create a script to logon to db2inst1 with a password , then issue db2 command :( (5 Replies)
Discussion started by: trekme
5 Replies
7. Post Here to Contact Site Administrators and Moderators
There are some computers in the firm that have no GUI, so I use elinks (ELinks - Full-Featured Text WWW Browser) to access the internet. However, logging onto the unix.com forums is not possible, because the page hangs at "Thank you for logging onto the forums, "
There is also a line "Please click... (6 Replies)
Discussion started by: figaro
6 Replies
8. Solaris
I am trying to configure a 4 second delay between failed login attempts on SSH. (1 Reply)
Discussion started by: LittleLebowski
1 Replies
9. Shell Programming and Scripting
Hi im trying to write a script to logon to list of servers with same userID. I have no option/plan to implement ssh-keygen sharing between the systems, so i have written script creating 2 files,
file1 holds list of hosts
host1
host2
host3
file2 has following script
for i in `cat file1`... (1 Reply)
Discussion started by: dreamaix
1 Replies
10. Red Hat
OS - Oracle Linux 5.6 and 6.3 (Oracle Linux is based on Red Hat).
Background: I have several OL 5.6 virtual machines running under Virtual Box on my Win7 Pro desktop. Due to the way VBox handles networking through the network adapter it installs on the host OS, I build my vm's with 2 virtual... (8 Replies)
Discussion started by: edstevens
8 Replies
LEARN ABOUT PLAN9
ssh-keysign
ssh-keysign(1M) ssh-keysign(1M)
NAME
ssh-keysign - ssh helper program for host-based authentication
SYNOPSIS
ssh-keysign
ssh-keysign is used by ssh(1) to access the local host keys and generate the digital signature required during host-based authentication
with SSH protocol version 2. This signature is of data that includes, among other items, the name of the client host and the name of the
client user.
ssh-keysign is disabled by default and can be enabled only in the global client configuration file /etc/ssh/ssh_config by setting Host-
basedAuthentication to yes.
ssh-keysign is not intended to be invoked by the user, but from ssh. See ssh(1) and sshd(1M) for more information about host-based authen-
tication.
/etc/ssh/ssh_config
Controls whether ssh-keysign is enabled.
/etc/ssh/ssh_host_dsa_key
/etc/ssh/ssh_host_rsa_key
These files contain the private parts of the host keys used to generate the digital signature. They should be owned by root, readable
only by root, and not accessible to others. Because they are readable only by root, ssh-keysign must be set-uid root if host-based
authentication is used.
ssh-keysign will not sign host-based authentication data under the following conditions:
o If the HostbasedAuthentication client configuration parameter is not set to yes in /etc/ssh/ssh_config. This setting cannot be overri-
den in users' ~/.ssh/ssh_config files.
o If the client hostname and username in /etc/ssh/ssh_config do not match the canonical hostname of the client where ssh-keysign is
invoked and the name of the user invoking ssh-keysign.
In spite of ssh-keysign's restrictions on the contents of the host-based authentication data, there remains the ability of users to use it
as an avenue for obtaining the client's private host keys. For this reason host-based authentication is turned off by default.
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWsshu |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
ssh(1), sshd(1M), ssh_config(4), attributes(5)
AUTHORS
Markus Friedl, markus@openbsd.org
HISTORY
ssh-keysign first appeared in Ox 3.2.
9 Jun 2004 ssh-keysign(1M)