Feeds

MIT's mind-reading Mosh pits itself against SSH daemons

No! I meant rm * not rm .*

The Power of One Brief: Top reasons to choose HP BladeSystem

Researchers at MIT have refined the Secure Shell network protocol and boasted their replacement system overcomes some of SSH's more annoying drawbacks.

Mosh (aka mobile shell) is designed to keep connections alive when clients roam across Wi-Fi networks or switch to mobile data connections.

In addition the revamp eliminates network lag when typing, thanks to the incorporation of a new State Synchronisation Protocol (SSP). The technology predicts what users are about to type to provide intelligent local echo and line editing of keystrokes, as explained in this draft paper:

Mosh, a mobile shell application that supports intermittent connectivity, allows roaming, and provides speculative local echo of user keystrokes. Mosh is built on the State Synchronization Protocol, a new UDP-based protocol that securely synchronizes client and server state, even across client IP address changes. Mosh uses SSP to synchronize a character-cell terminal emulator.

By maintaining the terminal state at both client and server, the Mosh client predicts the effect of user keystrokes and speculatively displays many of its predictions without waiting for the server to echo.

Over a commercial EV-DO (3G) net- work, median keystroke response latency with Mosh was 4.8 ms, compared with 503 ms for SSH. Mosh erred in predicting the keystroke response 0.9% of the time, but removed the error from the screen after at most one round-trip time.

The technology is free software, already available for GNU/Linux, FreeBSD, and Mac OS X flavours. More details on the protocol are due to be presented at the USENIX conference later this year. ®

Securing Web Applications Made Simple and Scalable

More from The Register

next story
Apple fanbois SCREAM as update BRICKS their Macbook Airs
Ragegasm spills over as firmware upgrade kills machines
HIDDEN packet sniffer spy tech in MILLIONS of iPhones, iPads – expert
Don't panic though – Apple's backdoor is not wide open to all, guru tells us
Mozilla fixes CRITICAL security holes in Firefox, urges v31 upgrade
Misc memory hazards 'could be exploited' - and guess what, one's a Javascript vuln
NO MORE ALL CAPS and other pleasures of Visual Studio 14
Unpicking a packed preview that breaks down ASP.NET
Captain Kirk sets phaser to SLAUGHTER after trying new Facebook app
William Shatner less-than-impressed by Zuck's celebrity-only app
Cheer up, Nokia fans. It can start making mobes again in 18 months
The real winner of the Nokia sale is *drumroll* ... Nokia
EU dons gloves, pokes Google's deals with Android mobe makers
El Reg cops a squint at investigatory letters
Chrome browser has been DRAINING PC batteries for YEARS
Google is only now fixing ancient, energy-sapping bug
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Reducing security risks from open source software
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.