I have 2 PIX 515E in HA. Lan based failover and stateful failover configured. If I start FTP from outside to inside and just login to the ftp server and do not do a transfer, fail a pix and there is a pause (47sec) while the secondary pix takes over but the ftp connection stays active and I do not have to login again. However if I have an ftp transfer running and fail a pix you get a netout:connection reset by peer and you lose the ftp connection and have to login again. I was expecting the transfer to pause while secondary pix takes over and then continue. Anyone now why its not doing that?
The default holddown is 45 seconds. I tested at 20 seconds and the same thing occurred. Dropped it to 6 seconds and it the ftp transfer worked ok. So must be the DOS ftp client droping the transfer when traffic stops for more than 15 sec.
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...