Ssh connection not working from Qt Creator

Veepee

I am trying to do remote debugging of a Qt application running in a linux simulator from my Ubuntu PC. When I try to connect the simulation IP over ssh from Qt creator, the device test connection always fails with connection timeout error. But ssh connection to Linux simulator is successful from my Ubuntu terminal.

Later I read from some of the posts where it was mentioned to try with dropbear. Installed dropbear in my simulator and when connected from Qt creator in ubuntu ,the device Connection is successful. But the Connection is successful only with one version of Simulator and always fails with a specific version (company specific )of Simulator. I have two questions

Are there are any special libraries or binaries required for dropbear which I am missing in my rootfs of ( not working version of Linux simulator) . Tried various options but in vain
Why is direct ssh connection (port 22) not working with Qt creator to Simulator.

Desktop Version:
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04

Desktop SSL:
openssl version -a
OpenSSL 1.0.1f 6 Jan 2014
built on: Mon Jan 30 20:38:38 UTC 2017

SSL Version in dropbear connection successful version of Simulator:
openssl version
OpenSSL 1.0.2l 25 May 2017

SSL Version in dropbear not working version of Simulator:
openssl version
OpenSSL 1.0.2g 1 Mar 2016

SGaist

Hi and welcome to devnet,

Can you compare the version of OpenSSL used on your machine and simulator ?

What version of Qt Creator are you talking about ?
What distribution are you running ?

Veepee

Desktop Version:
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04

Desktop SSL:
openssl version -a
OpenSSL 1.0.1f 6 Jan 2014
built on: Mon Jan 30 20:38:38 UTC 2017

SSL Version in dropbear connection successful version of Simulator:
openssl version
OpenSSL 1.0.2l 25 May 2017

SSL Version in dropbear not working version of Simulator:
openssl version
OpenSSL 1.0.2g 1 Mar 2016

Veepee

Firewall was the issue.
It worked fine when i gave the below command in simulator:
iptables -A INPUT -p tcp --dport 2022 -j ACCEPT

Nandhu

@Veepee Am trying to do ssh connection using qt program. Can you let me know how to create a ssh connection using qt creator. In some post i read Qt doesnt support ssh connection.

Veepee

@Nandhu You may need to use Dropbear SSH to establish ssh connection with Qt creator.