Currently I own and maintain some domains. For these domains you need a DNS-server to make a proper translation from hostname to ip-adress.blog.adslweb.net -> 80.126.215.23But to keep redundancy it is smart to have some extra DNS-servers confi…
NOTE: Some of the software is very experimental!!! I had some issues that my .ics was totally removed when I added a new ‘task’ via lightning, please make a backup of your ics file!
Some while ago I wrote a small article about WebDAV and Calendar …
Yesterday evening I start playing with Fedora Directory Server
So first I setup Fedora Core 8 as a VMWare-instance… But after some playing around, I had the next message:
“Server failed to start !!! Please check errors log for problems”
And guess what… no information at all in the logs 
So removed the packages and the next directories:
/etc/dirsrv
/etc/sysconfig/dirsrv
/var/lock/dirsrv
/var/lib/dirsrv
So no information… then strace will be your best friend 
So I started:
[root@fedora-ds debug]# strace -o ~/debug/setup -ff /usr/sbin/setup-ds.pl
And guess what… I had the error again… So I went to the ~/debug folder on another terminal and did:
[root@fedora-ds debug]# grep “failed” *
setup.31676:read(4, “Server failed to start !!! Pleas”…, 4096) = 64
setup.31676:write(2, “Server failed to start !!! Pleas”…, 64) = 64
setup.31711:write(1, “Server failed to start !!! Pleas”…, 64) = 64
[root@fedora-ds debug]#
When I digged into setup.31711 I found:
read(255, “if test ! -f $STARTPIDFILE ; the”…, 2220) = 663
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)Â = 0
stat64(“/var/run/dirsrv/slapd-fedora-ds.startpid”, 0xbfcd8eb8) = -1 ENOENT (No such file or directory)
rt_sigprocmask(SIG_SETMASK, [], NULL, 
= 0
fstat64(1, {st_mode=S_IFIFO|0600, st_size=0, …}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f7c000
write(1, “Server failed to start !!! Pleas”…, 64) = 64
So this is a nice clue… /var/run/dirsrv… and guess what… the owner of this directory was fedora-ds (a user I set up initially for testing purposes for the Directory Server ) With the comment chown I corrected the owner of this folder… and now service dirsrv start works 
Conclusion… strace is your best friend
Some while ago, I submitted a bug to the Gentoo Bug-trac. I had trouble with Firefox 2.0.0.2 when switching from non-proxy to a proxy-network.
http://bugs.gentoo.org/show_bug.cgi?id=169155
I found that when starting firefox (note: not firefox-bin) the proces wants to connect to www.gentoo.org
Now someone found the issue:
I have the same problem with mozilla-firefox-2.0.0.13.
Firefox tries to connect to the page mentioned in
/usr/lib/mozilla-firefox/defaults/pref/all-gentoo.js:
pref("browser.startup.homepage", "http://www.gentoo.org/");
If DNS or the page itself is unreachable firefox waits until the request
timeouts.
I haven’t test it yet… but it might solve the issue… 
Yesterday evening I completed for 50% an entry from my wish-list regarding my servers. On the backup-MTA I now have TLS and authenication enabled on Sendmail I wanted to have this enabled, because from my laptop I often setup an SSH-tunnel, but o…
At this moment, I have at home a FreeBSD server named tank.adslweb.net. This Server is acting as backup dns/mta/backup for the fileserver. But this ‘server’ is actually my oldlaptop So recently it came up into my mind to virtualize some services…..
As I wrote before, I did pass RHCE, RHCT and LPIC1. After a few weeks of study I also passed LPIC2 and ITIL
The results for ITIL:
Passing score: 65
Your score…: 67
Grade……..: PASSED
Section Title                    Score
————————————– —–
General                         66
Service Desk                     66
Incident Management                25
Problem Management                 80
Change Management                 80
Configuration Management            75
Release Management                100
Service Level Management            66
Availability Management              0
Capacity Management                50
IT Service Continuity Management      100
Financial Management for IT Services  100
Other ITIL Topics                 100
Relationships                    50
But I also passed LPIC 201 en LPIC 202.
LPIC 201 results:
Section                       Percent Correct
———————————— —————
Linux Kernel                        90%
System startup                      87%
Filesystem                         100%
Hardware                           75%
File and Service Sharing               87%
System Maintenance                   83%
System Customization & Automation        66%
Troubleshooting                     50%
LPIC 202 results:
Required score: 500
Your score….: 740
Status……..: PASS
Section                       Percent Correct
———————————— —————
Networking configuration             85%
Mail & News                       92%
DNS Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 80%
Web Services                     100%
Network Client Management            66%
System Security                    80%
Network Troubleshooting             100%
Recently I wrote about the impact of SSH-tunnels on HTTP-traffic. So I discussed with a collegue the results and he was wondering in the impact of TLS/SSL on HTTP-traffic. And I found out, that TLS/SSL slows down the communication about a factor …
For a long time, I had on my whishlist the dynamic updating of DNS via DHCP. The MS Windows servers usually do it out-of-the box… but I don’t want to bring a Windows-server into my private network. So after some google-work on the Internet I found this website.
All I need to do, was allow updates in the zones and tell isc-dhcpd how to do it.
So in the main settings I added the next lines (please note, I have a 172.16.3.0/24 subnet for my LAN):
ddns-update-style interim;
update-static-leases on;
key dhcpupdate
{
algorithm hmac-md5;
secret “YOURSECRETKEY”;
}
zone 3.16.172.in-addr.arpa {
primary 172.16.3.250;
key dhcpupdate;
}
zone lan.example.com {
primary 172.16.3.250;
key dhcpupdate;
}
Now we also have to update the BIND-config:
key dhcpupdate
{
algorithm HMAC-MD5;
secret “YOURSECRETKEY”;
};
zone “3.16.172.in-addr.arpa” {
type master;
file “master/3.16.172.in-addr.arpa-zone”;
allow-update { key dhcpupdate; };
};
zone “lan.example.com” {
type master;
file “master/lan.example.com-zone”;
allow-update { key dhcpupdate; };
};
Please note, that you have to make sure that the user bind is able to write/create files into the /var/named/etc/namedb/master
(chown bind /var/named/etc/namedb/master).
Now you have to restart the dhcpd and bind daemons.
Please substitute YOURSECRETKEY for your key, you can create this key with the command:
$ dnssec-keygen -a HMAC-MD5 -b 128 -n HOST dnsupdates
This command will generate two files and one with the extension .private and grep the part after the ‘Key: ‘ line.
I have a Nokia N80ie, and use it the fetch my e-mail on it. On my server I use a self-signed certificate, which is not known by the Nokia, so everytime I have to permit access So the first step is to fetch public certificate with openssl:$ openss…
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