leaving ports open for tftp

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hey guys,

 I have a really silly question for you! I just built a cobbler server that I am using to bare metal some boxes. But I am a bit n00b and need to figure out which ports to open in iptables.

 Here's a start:

xinetd     2031      root    8u     IPv4              94306                 UDP *:tftp 
in.tftpd   9203      root  cwd       DIR              253,0     4096     588097 /tftpboot
in.tftpd   9203      root  rtd       DIR              253,0     4096          2 /
in.tftpd   9203      root  txt       REG              253,0    39544    1813945 /usr/sbin/in.tftpd
in.tftpd   9203      root  mem       REG              253,0   139504    1698969 /lib64/ld-2.5.so
in.tftpd   9203      root  mem       REG              253,0  1722304    1698999 /lib64/libc-2.5.so
in.tftpd   9203      root  mem       REG              253,0    37368    1699127 /lib64/libwrap.so.0.7.6
in.tftpd   9203      root  mem       REG              253,0   114352    1699014 /lib64/libnsl-2.5.so
in.tftpd   9203      root  mem       REG              253,0    53880    1698970 /lib64/libnss_files-2.5.so
in.tftpd   9203      root    0u     IPv4              94306                 UDP *:tftp 



I think what I want is the 6th column but I am uncertain of how to express that in terms of iptables. Thanks!

tim
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