Need to test 100 ssh connections in parallel using loop and sleep? How to do that ?

8 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Assistance with testing ssh connections and what the return codes mean

Hello Forum, I'm using a bit of code from a script I found that allows me to capture the status code of connecting via SSH to remote servers: ssh -qno StrictHostKeyChecking=no -o ConnectTimeout=1 user@$InputIP 'ls -l /home/user >/dev/null 2>&1' > /dev/null 2>&1 status="$(echo $?)" echo...

2. Shell Programming and Scripting

ksh script to test max number of parallel ssh connections

hello , I need to check how many parallel ssh connections my server can take the load of. I need to login to different host which i am planning to read from a file and then a write a loop which will do parallel ssh. Please provide suggestion on how i can write script for the same.\ Thank...

3. Shell Programming and Scripting

How to create DB2 Connections in While loop using shell script

Hi , I have to create a db2 connection for the while loop in shell scripting. Below is the connection for DB2 I have to establish connect to TABLESCHENMA user $USERID using $PASSWORD Below is the while loop. while read TABLE; do db2 LOAD CLIENT FROM $DIRECTORY/$TABLE.ixf OF ixf INSERT...

4. IP Networking

How to test max number of tcp connections

Hello, I wanna test max tcp connection value. Please suggest how to do that. Thanks.

5. UNIX for Advanced & Expert Users

Disallow new ssh connections for a while ?

Hello, What is the best way to disallow new ssh connections for the duration of my session ? I want to evade read/write collisions. Things work like that - one session put files on server, other copies these files and then deletes them. So in order to evade collision: - I check if there are...

6. Ubuntu

SSH droping connections over a VPN

Hello friends, I'm connection to an external network using a VPN configured over an Ubuntu. The problem is that whenever I get connected to a remote computer using my VPN as router, after a while, sometimes short, sometimes long, sometimes immediately, the connection gets lost and I've to...

7. AIX

Show number of SSH connections

I'm investigating an issue where rsync's to an AIX server will sometimes fail. I suspect the problem might be due to the number of simultaneous SSH connections being made to the host dropping the rsync attempts. I'd like to view the number of open ssh connections. The who command will list logged...

8. BSD

ipfw slow ssh and ftp connections

just as the title says. thanks. #General Rule Sets /sbin/ipfw add 0300 check-state /sbin/ipfw add 0301 deny tcp from any to any in established /sbin/ipfw add 0302 pass tcp from any to any out setup keep-state /sbin/ipfw add 0303 pass udp from any to any out #SSH FTP /sbin/ipfw add 0400...

LEARN ABOUT V7

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)

UNIX for Dummies Questions & Answers