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Old 04-14-2011, 12:18 PM   #1
Registered: Jun 2010
Posts: 38

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So I am trying to boot with PXE. After obtaining an IP (from a windows server), it gets stuck at the TFTP and then gives a PXE-E32 TFTP open timeout. I have heard this is a firewall issue and have added all the ports to open, when I run an NMAP those ports still are not listening and I restarted the services and then the computer. After restart all the firewall changes I made are gone. I REALLY need help with this.
Old 04-14-2011, 01:04 PM   #2
Registered: Mar 2011
Location: Bellmawr, NJ
Distribution: Red Hat / Fedora
Posts: 195

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What distro are you using? How are you opening the ports? What service are you restarting?

This should open the port for you and save it.

iptables -I INPUT -p udp --dport 69 -j ACCEPT
service iptables save
Old 04-15-2011, 11:54 AM   #3
LQ Newbie
Registered: Jul 2009
Posts: 25

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After restart all the firewall changes I made are gone.
iptables is probably not saving the settings that you are making. You can try :

/etc/init.d/iptables save




service iptables save


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