A Static PAT on port 443 results in intermittent connection (Internet explorer displays Page cant be display immediately and sometimes works fine) while a STATIC Port redirection from 444 port makes the webserver work fine.
The Static PAT below looks something like this.
Works fine => static (DMZ,outside) tcp 213.X.X.X 444 10.153.122.55 https netmask 255.255.255.255 0
My question is what is it that PIX does for TCP 443 and not for TCP 444? Is there a way to stop the SYN protection on PIX ?
The packet capture on PIX/Client/Server shows that the client is sending a RST when PIX is listening on 443. Client completes the TCP handshake properly if PIX is listening on 444. I have tried changing MTU, changing TCP timeouts, adding ?norandomseq? to the static . Anything I?m missing ?
All FIXUP/Inspections have been truned off. The configuration for 443 and 444 are exactly same.
If I change my firewall frm PIX to Microsoft ISA, it works absolutely fine. So I know PIX is the culprit here.
I have a TAC open for this but nothing much happening from there.
there i nothing much in the config...a STATIC PAT and ACL on OUTSIDE...here is the current config....i have tried removing all fixups, disabling floodguard..setting MTU, setting MSS..norandomseq.....the configs have been reverted back to default as of now...
PIX Version 6.3(5)
interface ethernet0 100full
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password xxx
no fixup protocol dns
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
no fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
access-list ACL_OUTSIDE permit tcp any host 213.X.X.X eq https log
access-list ACL_OUTSIDE permit tcp any host 213.X.X.X eq 3389 log
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...
[toc:faq]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 and UDP are I...