[K12OSN] Re: Making donations work better

Terrell Prude', Jr. microman at cmosnetworks.com
Sun May 9 23:02:30 UTC 2004

cliebow at downeast.net wrote:

>yerrell-there is no way they will let yourun dhcp on alternate port..?they 
>let you do tftp on 69 when they don't use it ..nfs on 2049 and they can't 
>see it..why not dhcp on 1001 or 1067?
>I love doing it this way and have all my schools running this way..
>only problem i have ha in a year was someone starting internet connection 
>sharing on a win box which hardxodes it to which is also my 

Nope, not allowed.  Written policy says only the official DHCP server is 
allowed on the network.  Of course, since I'm the DHCP server 
administrator, I can do what I want with it.  :-)  But I cannot add 
another one.  Of course, Aunt Tilly the teacher wouldn't know the first 
thing about DHCP servers at all, let alone running them on nonstandard 
ports.  We've got to remember, we're talking about Aunt Tilly and 
donated gear here.

I've seen others on this list describe their own situations, similar to 
my own, except they're not the DHCP server admins, so they've got to go 
beg.  When it's found that they've put a second DHCP server (the K12LTSP 
one) on the network, they've reported getting in trouble, and sometimes 
it's because they're reversed the Ethernet connections on the K12LTSP 
server (we all know what that does).  A setup like mine would be a 
perfect fit for these folks, thus respecting both the IT staff and the 
existing infrastructure.


This is a major reason why I have trouble with the notion of Aunt Tilly 
the teacher standing up gear on the network--of any sort--without going 
through the IT folks first.  Our own school LANs have gotten nailed 
several times by the Aunt Tillys of the world bringing in their wireless 
access points from home.  These things have their internal DHCP servers 
turned on to give out 192.168's (remember, we have 10.x.x.x subnets!) so 
when they hook them up to the school network, they take out the entire 
school.  Yes, this is in violation of written policy.  Being the network 
infrastructure guy, I have to go track down these rogue W.A.P.'s when it 
happens.  During all this, I get to deal with principals, vice 
principals, and teachers trying to yell at me as if it's *my* fault.  
Thus, I have a major problem with this.

Aunt Tilly needs to leave the network A-L-O-N-E--workstation, thin 
client, server, or otherwise.  It's not her job.  That's why we IT folks 
are here.



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