I recently tested FTP server (Microsoft) in our local network, and didn't have any problems connecting to the server with the created users.
Now I am able to connect to the server and log on, but I can't transfer data or list directories on the remote server.
I assume it has something to do with our firewall(asa5510) our natted network environment. The FTP server is behind a firewall and a different public ip address. Our local network, from where I am trying to connect from is connected to the internet through a router and is using nat.
I am running FTP on port 20 and port 21 in the firewall
In the log below, I assume the trouble is in this line:
COMMAND:> PORT 192,168,1,48,12,231
the local ip of the client, from where I am trying to connect to the ftp server. there is no problem.
Is the problem caused by me being on a natted network, and if so, how do I solve this?
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...