If you installed openssh (which is highly recommended, rather than using telnet to connect to your Slug), you already have openssl installed. It can’t hurt to check though (openssl is a prerequisite for this guide):
ipkg install openssl
Tag: nslu2
Linksys NSLU2: email with Postfix and Dovecot
I’m using Postfix as the mail transport agent (MTA) and Dovecot as the mail delivery agent (MDA), and the mail server will serve just one domain (for now). The domain will be served as a virtual host. This means that the mail users don’t need their own login account on the server, and additional domains can be served in future with minimal changes.
Many thanks go to Raymond Mentjens for his help in fixing a few (actually, quite a few) errors, and for all his feedback while he followed this article. He has also created his own guides in Dutch – so if you read Dutch better than English, you may want to take a look at his site.
More…
Linksys NSLU2: enabling SSH access
After unslinging your Slug, you should install openssh. This will allow you to connect securely (as opposed to using an unencrypted Telnet connection), and you won’t need to re-enable Telnet access every time your Slug reboots.
Installation is very simple:
ipkg install openssh
This will also install and configure openssl, and generate the necessary key and certificate files to enable encrypted connections.
If you don’t already have an SSH client you can download PuTTY for free.
Once you have successfully connected using PuTTY and SSH, you can turn off Telnet access to your Slug.
If this information was useful, please leave a comment to let me know!
Linksys NSLU2
Linksys NSLU2
About the NSLU2
The Linksys NSLU2 is a lovely little NAS storage server with 2 USB ports and an Ethernet LAN port. You can attach two USB hard drives to it and connect it to your network, and use it as a file server.
Or you can download alternative firmware, run a customised version of Linux on it, and use it as a mail server, a torrent server, a print server, a web server, and more.
It supports NTFS, USB hubs, and flash drives. It’s silent, draws no more than 10W of power, runs at 266MHz, and is the size of two Weetabix.
And it’s known as a Slug.
Full details, including the data sheet, user guide and firmware, can be found over at the Linksys website, and some information is available at Wikipedia.
The NSLU2 is now discontinued, but don’t let that put you off – this will only really affect you if you need to return your Slug for replacement under warranty. Flashing your firmware voids the warranty (as does making hardware modifications, which a lot of users seem to do), so its discontinuation seems hardly relevant.
Opinion seems to be divided on this issue, with a few differing viewpoints given on Paul Hutchinson’s blog. Regardless, I predict the NSLU2 will maintain a cult following of users and developers for quite some time.
