Feeds

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

No! I meant rm * not rm .*

The essential guide to IT transformation

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. ®

Secure remote control for conventional and virtual desktops

More from The Register

next story
Apple promises to lift Curse of the Drained iPhone 5 Battery
Have you tried turning it off and...? Never mind, here's a replacement
China: You, Microsoft. Office-Windows 'compatibility'. You have 20 days to explain
Told to cough up more details as antitrust probe goes deeper
Linux turns 23 and Linus Torvalds celebrates as only he can
No, not with swearing, but by controlling the release cycle
Scratched PC-dispatch patch patched, hatched in batch rematch
Windows security update fixed after triggering blue screens (and screams) of death
This is how I set about making a fortune with my own startup
Would you leave your well-paid job to chase your dream?
prev story

Whitepapers

Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Advanced data protection for your virtualized environments
Find a natural fit for optimizing protection for the often resource-constrained data protection process found in virtual environments.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.