Sponsored Content
Full Discussion: Cant ssh, but ping works
Top Forums UNIX for Advanced & Expert Users Cant ssh, but ping works Post 303025700 by Peasant on Saturday 10th of November 2018 12:48:26 AM
Old 11-10-2018
Best to debug from server side, the side you wish to connect to, if everything else seems ok.

You can do it by command line starting the ssh server with multiple (up to 3) -d switches, and observe the output on screen.
Or uncomment / change the LogLevel in sshd_config to DEBUG3, restart and look at system logs.

Much more verbose output will follow.
I used this to succesfully debug one switch network brand which was unable to connect to SSH server due to server and client unable to find a common cipher to agree on.
Once i got it to debug mode, a server wrote a nice message, and when a chosen Cipher was added to server everything worked.

After you have identified the problem, turn it off since it will produce a lot of logs and possibly invade peoples privacy.

Hope that helps
Regards
Peasant.
 

10 More Discussions You Might Find Interesting

1. Solaris

could not ssh and ping

hi , i cannot ssh to a server , i have restarted the ssh instances also. and i cannot ping to the server.. any ideas ..plz (5 Replies)
Discussion started by: jegaraman
5 Replies

2. Solaris

could not ssh and ping

Hi, I have a solaris 8 machine. I see ssh is running in the machine sbnismwp2# ps -aef | grep ssh root 947 945 0 04:34:45 ? 0:00 /export/opt/SSHtecagt/sbin/ssh-mgmt-sysmonitor root 945 1 0 04:34:45 ? 0:00 /export/opt/SSHtecagt/sbin/ssh-mgmt-agent... (11 Replies)
Discussion started by: jegaraman
11 Replies

3. AIX

scp not working while ssh works

I try to transfer a file from a Linux host to an AIX-host via scp, which fails. Logging into the AIX-system from the same Linux-system via ssh works well and i am a bit at a loss where to look. The original setup was with a user account provided via LDAP, but because of the error message (see... (4 Replies)
Discussion started by: bakunin
4 Replies

4. UNIX for Advanced & Expert Users

script to monitor if ssh works.

Hi All, I have a setup of around 100 servers with atleast 10 users on each box.The public key from one server has been created and updated on all other servers , so that passwordless login can be done from any use. We recently had a problem that ssh keys on one of the system was changed and... (2 Replies)
Discussion started by: nua7
2 Replies

5. Solaris

SCP not working while SSH works

Dear expert, I have gone through the thread A similar error arising for me , please find the debug logs. I have tried from another server to push a file using scp but not working for me. i am using SunOS SUNW,SPARC-Enterprise machine. Thanks (5 Replies)
Discussion started by: posix
5 Replies

6. Solaris

Network issue on multinic. Unable to ping a host from One NIC but other works

Dear, I hope you all will be ok. I have an issue with Solaris box running on x86 Blade. I am unable to ping a node neither traceroute. I am able to do traceroute from oce0:6 port which have IP and subnet of same type which oce0:1 has. details are as follows: Problem: root@rinams02:/#... (3 Replies)
Discussion started by: khaniqshahid
3 Replies

7. UNIX for Dummies Questions & Answers

Passwordless SSH works, scp does not

I know the "how to setup passwordless SSH" question is asked probably 5 times a week. I know how to setup passwordless SSH, it's not tough, however after reinstalling linux on my server, I found a problem. I could SSH into my server just fine, no password required, however SCP still required a... (4 Replies)
Discussion started by: corrado33
4 Replies

8. AIX

Not able to ssh or ping a server

Hi, Earlier I was able to ssh /ping the server but now it just hangs Please suggest how to troubleshoot. Best regards, Vishal (4 Replies)
Discussion started by: Vishal_dba
4 Replies

9. Shell Programming and Scripting

Ssh on ping result?

I still haven't had chance to read the entire Debian manual, which I promise I will do as soon as I can, and I will start putting info back into this forum. However, for the mean time, could someone please help with a small script? I understand what I've got to do and how to do it, but I'm... (13 Replies)
Discussion started by: MuntyScrunt
13 Replies

10. AIX

PING to AIX works but TELNET FTP SSH doesn't work

root@PRD /> rsh DR KFAFH_DR: protocol failure due to unexpected closure from server end root@PRD /> telnet DR Trying... Connected to DR. Escape character is '^]'. Connection closed. root@PRD /> ftp DR Connected to KFAFH_DR. 421 Service not available, remote server has closed connection... (2 Replies)
Discussion started by: filosophizer
2 Replies
sftp-server(1M) 					  System Administration Commands					   sftp-server(1M)

NAME
sftp-server - SFTP server subsystem SYNOPSIS
/usr/lib/ssh/sftp-server [-f log_facility] [-l log_level] DESCRIPTION
sftp-server implements the server side of the SSH File Transfer Protocol as defined in the IETF draft-ietf-secsh-filexfer. sftp-server is a subsystem for sshd(1M) and must not be run directly. Command-line flags to sftp-server should be specified in the Subsys- tem declaration. See sshd_config(4) for more information. To enable the sftp-server subsystem for sshd add the following to /etc/ssh/sshd_config: Subsystem sftp /usr/lib/ssh/sftp-server See sshd_config(4) for a description of the format and contents of that file. There is no relationship between the protocol used by sftp-server and the FTP protocol (RFC 959) provided by in.ftpd. OPTIONS
Valid options are listed below. As stated above, these are to be specified in the Subsystem declation of sshd_config. -f log_facility Specifies the facility code that is used when logging messages from sftp-server. The possible values are: DAEMON, USER, AUTH, LOCAL0, LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7. The default is AUTH. -l log_level Specifies which messages will be logged by sftp-server. The possible values are: QUIET, FATAL, ERROR, INFO, VERBOSE, DEBUG, DEBUG1, DEBUG2, and DEBUG3. INFO and VERBOSE log transactions that sftp-server performs on behalf of the client. DEBUG and DEBUG1 are equiva- lent. DEBUG2 and DEBUG3 each specify higher levels of debugging output. The default is ERROR. EXIT STATUS
The following exit values are returned: 0 Successful completion. >0 An error occurred. FILES
/usr/lib/ssh/sftp-server Server-side binary. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsshdu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
sftp(1), ssh(1), ssh-add(1), ssh-keygen(1), sshd(1M), sshd_config(4), attributes(5) SunOS 5.11 24 Oct 2007 sftp-server(1M)
All times are GMT -4. The time now is 09:28 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy