Arch Linux

ZankerH

Member

Registered: 2009-02-06

Posts: 95

An experiment in Linux administration

Hello.

I've got a spare computer lying in my basement, so I thought I'd put it to use. I want to teach myself a thing or two about being a sysadmin, so here's the deal:

-System: Basic arch 64bit install with ssh (and some common courtesies such as bsd-games, links, wget, ccrypt etc)
-I'm giving out free user accounts with 1GB /home space (it's on a 160GB disk)
-Use it for whatever you like, be it remote storage, playing with shell scripts or as a proxy for stuff you wouldn't be caught dead with on your own PC
-All I ask for in return is that you play nice and don't mess with my server or network.
-It should be up most of the time, but I take absolutely no responsibility for uptime or availability.

Post here if you're interested.

Last edited by ZankerH (2009-09-08 19:37:39)

Netsu

Member

From: Poland

Registered: 2009-04-04

Posts: 182

Re: An experiment in Linux administration

I'm definitely interested in 1GB storage space, and it's even better if I could help somebody learn something by using it

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XFire

Member

From: UK

Registered: 2008-05-11

Posts: 192

Re: An experiment in Linux administration

I'm interested too

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ZankerH

Member

Registered: 2009-02-06

Posts: 95

Re: An experiment in Linux administration

Well, this isn't exactly off to a good start.

I've made a new set of RSA key with ssh-keygen, what do I do now? This is what happens when I try to connect.

$ ssh zero0ne@192.168.1.104
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
9b:a6:16:fa:85:87:4e:68:bc:1a:59:6c:80:c8:51:79.
Please contact your system administrator.
Add correct host key in /home/zero0ne/.ssh/known_hosts to get rid of this message.
Offending key in /home/zero0ne/.ssh/known_hosts:1
RSA host key for 192.168.1.104 has changed and you have requested strict checking.

jrib

Member

Registered: 2007-11-05

Posts: 15

Website

Re: An experiment in Linux administration

I'd be interested

okplayer02

Member

From: Denver, Colorado

Registered: 2008-11-24

Posts: 84

Re: An experiment in Linux administration

you have to delete the previous key that you generated otherwise if you dont know which one just delete them all and re generate a key

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tadzik

Member

From: &tadzik

Registered: 2009-07-17

Posts: 91

Re: An experiment in Linux administration

Interested.

rson451

Member

From: Annapolis, MD USA

Registered: 2007-04-15

Posts: 1,233

Website

Re: An experiment in Linux administration

I'll use it for a proxy if nothing else.

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evr

Arch Linux f@h Team Member

Registered: 2009-01-23

Posts: 554

Re: An experiment in Linux administration

count me in as well

majiq

Member

Registered: 2009-03-06

Posts: 259

Re: An experiment in Linux administration

Game.

ZankerH

Member

Registered: 2009-02-06

Posts: 95

Re: An experiment in Linux administration

Netsu, account created, check your email.

EDIT: The rest of you as well.

Last edited by ZankerH (2009-09-08 12:53:58)

Vintendo

Member

From: Netherlands

Registered: 2008-04-21

Posts: 375

Website

Re: An experiment in Linux administration

I'm interested as well...

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ZankerH

Member

Registered: 2009-02-06

Posts: 95

Re: An experiment in Linux administration

I'm interested as well...

Done, check your email.

kanim

Member

Registered: 2007-05-14

Posts: 104

Re: An experiment in Linux administration

hi i  would be intrested in one aswell

techprophet

Member

Registered: 2008-05-13

Posts: 209

Re: An experiment in Linux administration

Very interested. Does it have a webserver?

EDIT: Connected, logged in, and changed password.

Last edited by techprophet (2009-09-08 15:15:06)

ZankerH

Member

Registered: 2009-02-06

Posts: 95

Re: An experiment in Linux administration

kanim and techprophet: done, you have mail!

No webservers at this time, currently it's just a simple user account you can ssh into.

Janax

Member

From: Iowa

Registered: 2007-05-21

Posts: 86

Re: An experiment in Linux administration

Well, this isn't exactly off to a good start.

I've made a new set of RSA key with ssh-keygen, what do I do now? This is what happens when I try to connect.

$ ssh zero0ne@192.168.1.104
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
9b:a6:16:fa:85:87:4e:68:bc:1a:59:6c:80:c8:51:79.
Please contact your system administrator.
Add correct host key in /home/zero0ne/.ssh/known_hosts to get rid of this message.
Offending key in /home/zero0ne/.ssh/known_hosts:1
RSA host key for 192.168.1.104 has changed and you have requested strict checking.

ZankerH, you've done nothing wrong!  SSH is just warning you that the host key for the server you're connecting to (192.168.0.104) has changed (which you did yourself).  This protects the client machine so that you're not surprised by a man-in-the-middle attack and perform sensitive operations on an unknown machine.  Who knows - if you input passwords or other information, then someone could be stealing them!

However, since you changed the key yourself and know about it, all you need to do is delete line 1 in the file "/home/zero0ne/.ssh/known_hosts" on the client machine.  Then the next time you connect, SSH will ask you if you trust the new key you had generated on the "server" and (re-)insert that key with the the IP 192.168.0.104 into the "known_hosts" file.

Good luck!

zowki

Member

From: Trapped in The Matrix

Registered: 2008-11-27

Posts: 582

Website

Re: An experiment in Linux administration

Count me in!

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ZankerH

Member

Registered: 2009-02-06

Posts: 95

Re: An experiment in Linux administration

Count me in!

You have mail!

P.S.:Could everyone please post here whether or not they've managed to connect and login.

Last edited by ZankerH (2009-09-08 13:09:46)

Pox

Member

From: Melbourne, AU

Registered: 2007-10-04

Posts: 66

Re: An experiment in Linux administration

Definitely interested

kaaposc

Member

From: Latvia

Registered: 2008-07-16

Posts: 30

Re: An experiment in Linux administration

Any space left for me?..

syn

Member

Registered: 2009-08-22

Posts: 43

Re: An experiment in Linux administration

This is really great of you. If there's any space left, I'd love to have a shot.

Runiq

Member

From: Germany

Registered: 2008-10-29

Posts: 1,053

Re: An experiment in Linux administration

I'd be interested too, if just to try out stuff.

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jrib

Member

Registered: 2007-11-05

Posts: 15

Website

Re: An experiment in Linux administration

Count me in!

You have mail!

P.S.:Could everyone please post here whether or not they've managed to connect and login.

I connected fine! hi

Last edited by jrib (2009-09-08 13:25:59)

kanim

Member

Registered: 2007-05-14

Posts: 104

Re: An experiment in Linux administration

i was able to connect and login thx

btw:
you have a mail

Last edited by kanim (2009-09-08 13:30:54)