Hi Team,

I have source and destination redhat linux servers. Both are running with different networks.

While connecting from source server with sftp am getting below user.

>$ sftp sudheer@ServerIP

Error :: Couldn't read packet: Connection reset by peer ...

Please help me out in this issue.

Please note that we aren't on your 'team', but will be happy to try to help you. Are you the administrator of these systems? Because the error is fairly clear...you have a communications error between the two systems. Have you verified that SSH is running on them both? That you can log in via terminal with SSH? Have you done ANY troubleshooting (such as checking logs, running SSH with the -vv for debugging info, etc.?)

And saying "redhat linux servers" tells us very little...what version of Red Hat? And since you're using RHEL, have you contacted Red Hat support, since you're PAYING FOR RHEL, RIGHT????

Connection reset suggests that a firewall prevented the connection. This could be an internal firewall device between the two subnets or more likely the firewall software on the target server. If you're using RHEL6 or lower that sofware is likely iptables. If RHEL7 or higher it is likely firewalld which uses iptables as a back end.

A quick way to determine if it is the target server's software is to temporarily stop the firewall there. e.g.:
RHEL6 or lower: service iptables stop
RHEL7 or higher: systemctl stop firewalld

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