I was wondering what the best practice is for accessing remote routers or switches over the Internet. I don't think locking telnet access to a specific IP via ACL is the best practice and was wondering if SSH is any better. Typically I would have a secure VPN into the remote site and access the Internet router/switch by console. This obviously does not work if the link to this site is down.
I would agree with your assessment that the optimum solution for remote access (over the Internet) to routers and switches is a VPN tunnel. If you do not have VPN capability to them then I would suggest that SSH is acceptable. It is fairly secure and does encrypt the login process. I would be reluctant to telnet to routers or switches over the Internet because the login is sent in clear text and leaves you pretty vulnerable. This is much less safe than using SSH.
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...