OEL 6.3 :Slow login due to /etc/ssh/sshd_config configuration
Version: Oracle Enterprise Linux 6.3
Running on VMWare Workstation
When I login to my Linux VM from putty, the third line prompting for password comes only after few seconds.
I managed to fix this issue after several trial and error experiments.
I have to do both Step1 and Step2 mentioned below to fix this issue. Doing either one of Step1 and Step2 won't fix the issue
Step1.
In
Comment the line
and
Remove the comment for the line
sshd_config file should look like below
Step2. In /etc/ssh/sshd_config file
I commented the line
and then
uncommented
and did a restart using
Soon, I'll have to use DNS functionality for this VM. So, I am worried that the above change ("UseDNS no") will prevent the VM from using the DNS service.
Is there any other workaround to make the login quick?
When I ssh to my box, an Ultra 5. I get prompted for password immediately. I enter it and have to wait sometimes a full minute for it to prompt for a password.
The same thing happens when i try to ftp to the box, it will say connected, but it takes forever to prompt for password, and... (2 Replies)
Running open solaris on a e420 that I recently picked up. Having issues sshing to it from either of my Linux boxes as its very slow to login (from the solaris box to the linux box it connects just fine.
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Hi All,
I have problem when i write my user name to login to my server late (about 10 min) to give me field of password
if u know how i can solve it?
Thanks (4 Replies)
Hi All,
On /etc/ssh/sshd_config remark, many of the lines are commented out, like below
#PubkeyAuthentication yes
Does that mean the default of PubkeyAuthentication is no (or yes)?
Thanks for any comment you may add. (1 Reply)
Hi Guys and Girls, I know this is a common question but I've searched and we've tried the suggestions without luck. When I log into the box via SSH from a windows machine I get a 1 min 20 sec delay. If we add my IP address and machine name to /etc/hosts then I get an instant login. I would be happy... (12 Replies)
I have some sample code that's supposed to ssh to another machine using Net::SSH::Perl, execute a command, and print
the output of that command. It's very basic, and it works. However, I noticed that upon logging in:
$ssh->login('username','password');
It takes roughly 10-13 seconds to... (2 Replies)
Hi, I have the following issue, when I tried to login to an Openindiana remote server through ssh It takes to long to ask me for the password. So i tried -v and I realize that sshd hangs here " debug1: SSH2_MSG_SERVICE_ACCEPT received " for at least 2 minutes. Then I can log in and everything is... (2 Replies)
Hi,
How can I check and modify /etc/ssh/sshd_config parameters in a script? I'll particular to check and enable / disable PasswordAuthentication and PubkeyAuthentication. I know I can edit sshd_config by vi, but for some reason we need change it in a script.
Thank you.
hce (9 Replies)
Hello all,
By mistake i edited sshd_config file and made passwordauthentication no , Now i don't have key to login.
Is there any way, i can revert the changes, I am not able to login to the box at well.
Need help.
Thanks,
saurau (3 Replies)
I have a constraint to follow organization policy. So i do not have much liberty.
ssh -i /opt/nonprod user1@hostone -t bash works while ssh -i /opt/nonprod -t bash user1@hostone fails
How can I get this to work when I am enforced to put -t bash before the user@hostname ?
Will share debug... (3 Replies)
Discussion started by: mohtashims
3 Replies
LEARN ABOUT MINIX
login.krb5
LOGIN(8) System Manager's Manual LOGIN(8)NAME
login.krb5 - kerberos enhanced login program
SYNOPSIS
login.krb5 [-p] [-fFe username] [-r | -k | -K | -h hostname]
DESCRIPTION
login.krb5 is a modification of the BSD login program which is used for two functions. It is the sub-process used by krlogind and telnetd
to initiate a user session and it is a replacement for the command-line login program which, when invoked with a password, acquires Ker-
beros tickets for the user.
login.krb5 will prompt for a username, or take one on the command line, as login.krb5 username and will then prompt for a password. This
password will be used to acquire Kerberos Version 5 tickets (if possible.) It will also attempt to run aklog to get AFS tokens for the
user. The version 5 tickets will be tested against a local krb5.keytab if it is available, in order to verify the tickets, before letting
the user in. However, if the password matches the entry in /etc/passwd the user will be unconditionally allowed (permitting use of the
machine in case of network failure.)
OPTIONS -p preserve the current environment
-r hostname
pass hostname to rlogind. Must be the last argument.
-h hostname
pass hostname to telnetd, etc. Must be the last argument.
-f name
Perform pre-authenticated login, e.g., datakit, xterm, etc.; allows preauthenticated login as root.
-F name
Perform pre-authenticated login, e.g., datakit, xterm, etc.; allows preauthenticated login as root.
-e name
Perform pre-authenticated, encrypted login. Must do term negotiation.
CONFIGURATION
login.krb5 is also configured via krb5.conf using the login stanza. A collection of options dealing with initial authentication are pro-
vided:
krb5_get_tickets
Use password to get V5 tickets. Default value true.
krb_run_aklog
Attempt to run aklog. Default value false.
aklog_path
Where to find it [not yet implemented.] Default value $(prefix)/bin/aklog.
accept_passwd
Don't accept plaintext passwords [not yet implemented]. Default value false.
DIAGNOSTICS
All diagnostic messages are returned on the connection or tty associated with stderr.
SEE ALSO rlogind(8), rlogin(1), telnetd(8)LOGIN(8)