[K12OSN] Blocked net access
pnakashi at k12.hi.us
Mon Apr 2 01:27:50 UTC 2007
On Saturday, January 13, 2007, at 01:56 PM, Nakashima wrote:
> On Saturday, January 13, 2007, at 01:14 AM, Nakashima wrote:
>>> John Lucas wrote:
>>>> Yes. Unless changes are made, your LTSP server is not set up as a
>>>> router and won't pass packets from the "inside" network to the
>>>> "outside" network. The terminals run processes on the server, which
>>>> has access to both networks, but non-terminals attached to the
>>>> "inside" do not have access to the outside. To keep the PCs on the
>>>> inside and allow them out, you need to make several changes:
>>>> - turn on packet forwarding on the server (make it a router)
>>>> - give the server's inside address as a router in the DHCP stanza
>>>> for the PCs
>>>> - make sure you don't have an IPTables rule preventing forwarding
>>>> - make sure your perimeter router knows the route back to the
>>>> inside network
>>>> - make sure your perimeter firewall allows the inside network to
>>>> This is all basic TCP/IP networking 101 and is not specific to LTSP.
>>> K12LTSP should come with a script to do all of this, though. Try
>>> service nat on
>>> to start it and
>>> chkconfig nat on
>>> to make it start automatically at boot up. Your other routers
>>> need to know about the eth0 address range because outgoing packets
>>> nat to the eth1 address. I thought this was normally set up during
>>> a default install.
>>> Les Mikesell
>>> lesmikesell at gmail.com
>> Thanks John, Dan, and Les,
>> I did the following in Terminal
>> service nat start
>> chkconfig nat on
>> No luck.
>> I can ping addresses on the outside from an OS X Mac, but can't get
>> to the web with a browser.
>> I'm not very technical, so any further help you can provide will be
>> greatly appreciated.
> I received a tip to check the DNS settings. I will be doing that on
> Thanks :-)
Just wanted to finish up the thread. It turned out to be the firewall.
Once I disabled the firewall, everything worked.
Thanks for all the help.
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