alek blogs

Back to Components game?

From Don Box talk on Services Oriented Architecture (SOA) presented during XML Web Services One conference (based on article from eWeek):

"Objects are to services what ICs [integrated circuits] are to devices. And we're moving into this world where we want services to be replaceable, we want services to be deployed independently from other parts of the application, and there's a lot of work to be done in this space."

If you replaced services by components in the statement above would it not sound like something familiar?

Maybe the way to look on this is that Web Services becomes uber components: components that are not only distributed but work for internet scale applications.

created Fri August 15, 2003 11:55 PM EST [2003/8/15 23:55 EST] permalink

Virus in air?

When you enter a room with your wireless windows laptop turned on, wireless card working, and with unfixed RPC vulnerability in your Windows NT/2000/XP then you may be "lucky" enough to catch a traditional virus and some of the latest Windows viruses ....

created Mon August 18, 2003 18:55 EST [2003/8/18 18:55 EST] permalink

Checking validity of server public key with OpenSSH

It was not obvious how to compare key signature when you access new host (or one that was upgraded say from SSH2 to OpenSSH). Easy way to verify keys is to compare key signatures (this assumes you have trustful channel to get those signatures) still after login you can do some simple verification:

$ ssh-keygen -l -f /etc/ssh/ssh_host_key.pub
1024 bf:b2:5c:4a:84:be:23:29:0a:aa:33:18:8f:55:f3:34 foo@newschool.cs.indiana.edu

but wait (!) there is possibly more keys:

$ ssh-keygen -l -f /etc/ssh/ssh_host_dsa_key.pub
1024 08:27:15:2b:d0:6b:b4:a1:c9:c4:a2:89:c9:98:a7:3a /etc/ssh/ssh_host_dsa_key.pub

$ ssh-keygen -l -f /etc/ssh/ssh_host_rsa_key.pub
1024 b9:62:0d:a9:df:66:43:e4:97:3d:b8:a0:b2:63:52:8c /etc/ssh/ssh_host_rsa_key.pub

still what bothers me: why there are three separate keys and not just two?

created Fri August 22, 2003 12:55 AM EST [2003/8/22 0:55 EST] permalink

Oh Laptop, Where Are You?

I have put together description of an ideal laptop and list of possible candidates. Still looking ....

created Tue August 26, 2003 11:15 AM EST [2003/8/26 11:15 EST] permalink

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