[LUGSB] Question about FTP.

[Michael Hrivnak]

DHCP and DNS are not really that bad to administer.  Here is how I have my 
dhcpd.conf file setup to assign the same IP addressed to the same machines 
every time:

/*--------------------------
subnet 192.168.20.0 netmask 255.255.255.0 {
        range 192.168.20.10 192.168.20.99;
        option routers 192.168.20.1;
        # Broadcom wireless router from Verizon
        host broadcom {
          hardware ethernet 00:0F:B3:CC:92:3D;
          fixed-address 192.168.20.2;
        }
        host mydesktop {
          hardware ethernet 00:11:50:9B:98:13;
          fixed-address 192.168.20.3;
        }
} 
---------------------*/

I also installed bind as a caching DNS server, which I think worked out of the 
box in Debian with no modifications.  Then I added a local zone file.  Here 
is how that looks:

/*----------   /etc/bind/named.conf.local
zone "hrivnak.org" {
        type master;
        file "/var/cache/bind/hrivnak.zone";
};
----------------------*/

/*----------- /var/cache/bind/hrivnak.zone
; BIND data file for local loopback interface
;
$TTL    300
@       IN      SOA     localhost. root.localhost. (
                     2007011201         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 )       ; Negative Cache TTL
;
@               IN      NS      firewall
@               IN      A       192.168.20.151
firewall        IN      A       192.168.20.1
router          IN      A       192.168.20.2
mydesktop   IN      A       192.168.20.3
wind            IN      A       192.168.20.151
boss            IN      A       192.168.20.152
asst            IN      A       192.168.20.153
-------------*/

However, if you just want to use "hosts" files to keep track of machines, I 
would put the file in subversion (or your favorite revision control system) 
and run a cron job on each box that updates on a regular basis.  Then you can 
just commit a change to the repository, and all of the machines will get the 
new file in short order.

Michael

P.S. I think we all know the solution to Windoze networking problems... ;)


On Saturday 03 March 2007 17:47, Michael F. Lamb wrote:
> > Sometimes
> > you can share folders on one system and they just refuse to appear on
> > other windows machines... but eventually do after a few minutes.
>
> When I've had similar problems, I've suspected that it's because the
> network switch (not a hub) that I've got all the machines plugged into
> doesn't do network broadcasts in the way Samba/SMB likes. IIRC using a
> hub rather than a switch made Samba behave less strangely. OTOH I never
> did figure it out completely and it's been a long time since I've had to
> use SMB.
>
> > They all grab an IP using DHCP, and
> > so it keeps changing, and is annoying.
>
> Who runs the DHCP server? Do you get your address from campus, from an
> ISP, or do you run a DHCP server?
>
> > So is typing in the dotted decimal addresses.
>
> DNS and DHCP servers are tedious to administrate, too. The laziest way
> I've found is to use my network router/switch, which does NAT and DHCP,
> to assign all my machines a static, private IP address. Then set up an
> appropriate /etc/hosts file on every machine so you don't have to type
> dotted quads.
>
> I do wish that there existed a small, simple-to-administer program that
> does DNS serving/caching and DHCP services for lazy people with a few
> machines on a tiny network.
>
> If getting a router is out of the question, and you've no control over
> your IP addresses, you could build some scripts that automatically
> update all your /etc/hosts files. (Assuming that your addresses don't
> all change at once. An account with no-ip.org for your server might help
> with that.)
>
> Linux supports Apple's auto-discovery 'Rendezvous' protocol too, in the
> form of 'avahi,' but I don't know much about it. Might be worth some
> Googling. I know I've built a linux-based iTunes playlist-server thing
> that magically shows up on all the Macs on the LAN using a tool that
> talks to avahi.
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