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Blog

Welcome to the Blog.

Getting the LAN Services Right: dhcpd, bind8, Squid and Adzapper

2001-08-20

The DSL line is there now and the Debian box on the 486 can already boot and go online. That was the first important check. But that alone does not make it a real router replacement.

The real pain is not only getting one machine online. The real pain is making one machine useful for the whole LAN. ... continue

Linux Networking Series, Part 3: Working with ipchains

2000-04-11

Linux 2.2 is now the practical target in many shops, and firewall operators inherit a double migration:

People often remember this as “new command syntax.” That is the shallow version. The deeper version is policy structure: teams had to stop thinking in old command habits and start thinking in chain logic that was easier to reason about at scale. ... continue

My D-Channel Syslog Hack and DynDNS Update for the Home Router

2000-04-09

Now I have one of my favourite hacks on this router.

The problem was simple: when I am not at home and the line is down, I still want a way to make the box go online. I do not want to call home, let somebody pick up, log in somewhere, and then maybe start the connection. I want a stupid simple trick. If I call the home number, the box should see that and bring the line up. ... continue

Making ISDN Dial-On-Demand Work with SuSE and ipfwadm

1999-02-14

Now the box is not only booting, it is doing useful work.

I still have the DSL hardware connected, but the modem LED is still blinking and not stable. So this means: the real life is still ISDN. But because of the T-Online/DSL package I can already use ISDN for internet without this old fear of counting every minute too hard. That makes it much more realistic to really use the Linux router every day and not only as some weekend test setup. ... continue

My First Linux Router: SuSE 5.3, Teles ISDN and the Blinking DSL Modem

1998-10-03

I wanted to start with Linux already earlier, but I did not. One reason was VFAT. I had too much DOS and Windows stuff on the disk and I did not want to make a big break just for trying Linux. Now SuSE 5.3 comes with kernel 2.0.35 and VFAT support is there in a way that feels usable for me, so now I finally do it.

Also I have enough curiosity to break my evenings with this, and enough little money to make bad hardware decisions and then keep them running because there is no budget for the nice version. ... continue

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