We will actually stay away from a space inside brackets and use the hex representation \x20. It comes down to readability for us - a single space or a double space inside brackets looks very similar, but you can't mistake the hex:
I don't know if I'd go call it a standard. We (meaning the sig team) tend to use the hex value (\x20) because it's a clearly definitive "thing" to represent one space, and one space only. We do it simply because there's no mistaking exactly what it is.
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...