Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: host key issue via java
Top Forums UNIX for Dummies Questions & Answers host key issue via java Post 302439447 by prashant.ladha on Thursday 22nd of July 2010 02:48:11 PM
Old 07-22-2010
host key issue via java
Hi,
I am encountering below mentioned exception when I execute my Java program that is supposed to SFTP the file from one server over to another.

Can you please tell me some pointers to resolve this issue?


Exception
Code:
HostName- 10.1.1.1 ; userName- bmsftp 
log4j:WARN No appenders could be found for logger (com.sshtools.j2ssh.transport.publickey.SshKeyPairFactory). 
log4j:WARN Please initialize the log4j system properly. 
The host 10.1.1.1  is currently unknown to the system 
The host key fingerprint is: 1024: a d3 9d 50 c9 97 6e f3 54 ef 8e ce 26 cd 54 78 
Do you want to allow this host key? [Yes|No|Always]: java.lang.NullPointerException 
        at com.sshtools.j2ssh.transport.ConsoleKnownHostsKeyVerification.getResponse(Unknown Source) 
        at com.sshtools.j2ssh.transport.ConsoleKnownHostsKeyVerification.onUnknownHost(Unknown Source) 
        at com.sshtools.j2ssh.transport.AbstractKnownHostsKeyVerification.validateHost(Unknown Source) 
        at com.sshtools.j2ssh.transport.AbstractKnownHostsKeyVerification.verifyHost(Unknown Source) 
        at com.sshtools.j2ssh.transport.TransportProtocolClient.verifyHostKey(Unknown Source) 
        at com.sshtools.j2ssh.transport.TransportProtocolClient.performKeyExchange(Unknown Source) 
        at com.sshtools.j2ssh.transport.TransportProtocolCommon.beginKeyExchange(Unknown Source) 
        at com.sshtools.j2ssh.transport.TransportProtocolCommon.onMsgKexInit(Unknown Source) 
        at com.sshtools.j2ssh.transport.TransportProtocolCommon.startBinaryPacketProtocol(Unknown Source) 
        at com.sshtools.j2ssh.transport.TransportProtocolCommon.run(Unknown Source) 
        at java.lang.Thread.run(Thread.java:534)

 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

RSA host key addition

Guys How do i add RSA key for a host ? I was able to connect to a host some time back but now its not connectable ,via SSH. Message i get is : abhi@myHost:~/.ssh> ssh eatcid@yourHost @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION... (3 Replies)
Discussion started by: ak835
3 Replies

2. Shell Programming and Scripting

Host Key verification failed

Hi, I am running a script to scp a file from one server to another. I have created the public/private key and copied the public key to the other server and appended it to authorized_key file. But i am getting the error message saying "Host Key verification failed" Connection lost. It works well... (3 Replies)
Discussion started by: ahamed
3 Replies

3. UNIX for Dummies Questions & Answers

Host key verification failed in openssh

Experts, We are trying to make a key-based authentication from Server A to Server B. Server A is installed with openshh. Server B runs "Sun_SSH_1.1". Server A's rsa2 public key has been added into the server B's authorized_keys. We are sure that permission settings of the files and folders in... (1 Reply)
Discussion started by: rprajendran
1 Replies

4. Shell Programming and Scripting

Script to check if host key authentication is setup

Hey all, I have a script that I use for some automated installs. Unfortunately for the script to work the server that it's running from needs to have host-key authentication setup to the target server. If it isn't setup beforehand and the script is executed the install partially completes and... (1 Reply)
Discussion started by: Rike255
1 Replies

5. Shell Programming and Scripting

SCP command end with Host Key not found in database

Hi, I'm trying to copy a file from one server to remote server using SCP command. Below is the command i tried and got host key not found in database errror. scp sendfile.txt Remoteserver:/home/xxxx/. Error Message: Host key not found from database Key fingerprint:... (2 Replies)
Discussion started by: skcvasanth
2 Replies

6. Solaris

Solaris 8 ssh public key authentication issue - Server refused our key

Hi, I've used the following way to set ssh public key authentication and it is working fine on Solaris 10, RedHat Linux and SuSE Linux servers without any problem. But I got error 'Server refused our key' on Solaris 8 system. Solaris 8 uses SSH2 too. Why? Please help. Thanks. ... (1 Reply)
Discussion started by: aixlover
1 Replies

7. Solaris

Ssh between servers - No DSA host key is known

It seems I can do ssh <IP> but not ssh <hostname> If I try to ssh to hostname I get the error - No DSA host key is known for host1 and you have requested strict checking. Host key verification failed. Where do I set up the DSA keys? Is it ssh_known_hosts? Assume afterwards I can... (3 Replies)
Discussion started by: psychocandy
3 Replies

8. HP-UX

SSH2 - signature didn't match with host key

I am trying to complete ssh2 connection between HP-UX and CoreFTP. The host key authentication fails with signature didn't match. See below output. I can connect to this CoreFTP from my Windows desktop, and connect to a multitude of other servers from the HP-UX system as well, but have... (2 Replies)
Discussion started by: Stars
2 Replies

9. UNIX for Beginners Questions & Answers

Host key verification failed error

HI i am getting host key verification failed error. # cat id_rsa.pub | ssh root@10.110.51.245 'cat >> .ssh/authorized_keys;exit;' cat: id_rsa.pub: No such file or directory @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! ... (3 Replies)
Discussion started by: scriptor
3 Replies

10. Solaris

Change from weak ssh host key to strong one

Hi, I got instructions from Security audit team for Solaris-10 server. They mentioned - "The sshd configuration on the host supported weak host keys and allowed password authentication on Solaris server. Enable stronger keys (2048 or 4096 bit)". I am not clear enough, what they mean by weak... (7 Replies)
Discussion started by: solaris_1977
7 Replies

LEARN ABOUT DEBIAN

libglpk-java

libglpk-java(3) 					       libglpk-java overview						   libglpk-java(3)

NAME

       libglpk-java - GNU Linear Programming Kit Java Binding

DESCRIPTION

       The  GNU  Linear  Programming  Kit  (GLPK)  package supplies a solver for large scale linear programming (LP) and mixed integer programming
       (MIP).  The GLPK project is hosted at http://www.gnu.org/software/glpk.

       It has two mailing lists:
       - help-glpk@gnu.org and
       - bug-glpk@gnu.org.

       To subscribe to one of these lists, please, send an empty mail with a Subject: header line of just "subscribe" to the list.

       GLPK provides a library written in C and a standalone solver.  The source code provided at ftp://gnu.ftp.org/gnu/glpk/ contains	the  docu-
       mentation of the library in file doc/glpk.pdf.

       The Java platform provides the Java Native Interface (JNI) to integrate non-Java language libraries into Java applications.

       Project GLPK for Java delivers a Java Binding for GLPK. It is hosted at http://glpk-java.sourceforge.net/.

       To report problems and suggestions concerning GLPK for Java, please, send an email to the author at xypron.glpk@gmx.de.

ARCHITECTURE

       A GLPK for Java application will consist of the following
       - the GLPK library
       - the GLPK for Java JNI library
       - the GLPK for Java class library
       - the application code.

GLPK LIBRARY

       The GLPK library can be compiled from source code. Follow the instructions in file INSTALL provided in the source distribution. Precompiled
       packages are available in many Linux distributions.

       The usual installation path for the library is /usr/local/lib/libglpk.so.  The library has to be in the search path for binaries.

GLPK FOR JAVA JNI LIBRARY

       The GLPK for Java JNI library can be compiled from source code. Follow the instructions in file INSTALL provided in  the  source  distribu-
       tion.

       The  usual installation path for the library is /usr/local/lib/jni/libglpk-java.so.  The library has to be in the search path for binaries.
       Specify the library path upon invocation of the application, e.g.
       java -Djava.library.path=/usr/local/libjni

GLPK FOR JAVA CLASS LIBRARY

       The source code to compile the GLPK for Java class library is provided at http://glpk-java.sourceforge.net.

       The GLPK for Java class library can be compiled from source code. Follow the instructions in file INSTALL provided in the source  distribu-
       tion.  The usual installation path for the library is /usr/local/share/java/glpk-java.jar.

       The library has to be in the CLASSPATH. Specify the classpath upon invocation of the application, e.g.
       java -classpath /usr/local/share/java/glpk-java.jar;.

SEE ALSO

       Further documentation and examples can be found in the documentation path, which defaults to /usr/local/share/doc/libglpk-java.

version 1.0.18						       September 10th, 2011						   libglpk-java(3)
All times are GMT -4. The time now is 10:46 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy