SFTP is a sub-component of SSH. If you are using Linux/Solaris, make sure you have it enable in /etc/ssh/sshd_config file. Like this:
# override default of no subsystems
Subsystem sftp /usr/libexec/openssh/sftp-server
Otherwise, you will not be able to use SFTP.
Try to ssh to the system first. If you can get the authentication prompt, then you know the firewall is opened on port 22. Otherwise, look at your firewall/router configuruation and make sure the port 22 is opened.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...