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having a little trouble TFTPing files to a router

 
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rj4102



Joined: 11 May 2010
Posts: 1

PostPosted: Tue May 11, 2010 1:25 am    Post subject: having a little trouble TFTPing files to a router Reply with quote

Hi all,

As the subject says I am having a little troubling trying to TFTP some files over to the router. Right now I can't ping the host OS en0 address from the router. I can however ping other devices on the network from the router as well as the tap0 address without any issue.

I think my problem with the TFTP is that for some reason it cant connect to the host computers IP address.

Here is my setup

en0 = 172.16.1.30
tap0 = 10.10.10.10
router = 10.10.10.20

other device on physical network
ASA firewall = 172.16.1.1

router can ping asa and tap0 but not en0

host OS can ping tap0 and router (ya i know weird, router cant ping host os but host os can ping router)

here are the commands I used to set this up on the host OS

sudo ifconfig tap0 10.10.10.10 netmask 255.255.255.0
sudo sysctl -w net.inet.ip.forwarding=1
sudo sysctl -w net.inet.ip.fw.enable=1
sudo natd -alias_address 172.16.1.30 -interface en0 -use_sockets -same_ports -unregistered_only -dynamic -clamp_mss
sudo ipfw add divert natd ip from any to any via en0

setup a default route pointing to tap0 ip

made sure os x firewall is turned off

My gut feeling tells me somethings fubar with the host OS but i can't for the life of me figure out what it is or how to fix it. Any of your more adept OS X guru's able to help me out here?

-RJ
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