[K12OSN] Weird LTSP Boot error

[Barry R Cisna]

Joseph,

Go into Webmin>Networking>Linux Firewall and simply delete all the
entries that are showing,and SAVE>Apply,
Then reopen Webmin go back to same spot Select "Accept all traffic"
button,this will re-generate your iptables srcipt.Then start adding all
the zillion ports you want to block. This will at least get your TC's
booting again with iptables actually running.
The key is that the masquarading entry is in there( Postrouting). The
TC's will never boot correctly without this single entry.
Webmin hijacks to a certain degree the way iptables is controlled.
Hope this helps.

Take Care,
Barry Cisna