Re: Share internet connection/make a small server

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On Thu, 2005-09-01 at 12:15 -0700, Antonio Olivares wrote:
> --- Antonio Olivares <olivares14031@xxxxxxxxx> wrote:
> 
> > 
> > 
> > --- Jeff Vian <jvian10@xxxxxxxxxxx> wrote:
> > 
> > > On Thu, 2005-09-01 at 04:53 -0700, Antonio
> > Olivares
> > > wrote:
> > > > 
> > > > --- Jeff Vian <jvian10@xxxxxxxxxxx> wrote:
> > > > 
> > > > > On Wed, 2005-08-31 at 17:16 -0700, Antonio
> > > Olivares
> > > > > wrote:
> > > > > > 
> > > > > > --- Jeff Vian <jvian10@xxxxxxxxxxx> wrote:
> > > > > > 
> > > > > > > On Wed, 2005-08-31 at 12:20 -0700, Antonio
> > > > > Olivares
> > > > > > > wrote:
> > > > > > > > 
> > > > > > > > --- Antonio Olivares
> > > <olivares14031@xxxxxxxxx>
> > > > > > > wrote:
> > > > > > > > 
> > > > > > > > 
> > > > *nat
> > > > :PREROUTING ACCEPT [759:76421]
> > > > :POSTROUTING ACCEPT [4:288]
> > > > :OUTPUT ACCEPT [394:23805]
> > > > -A POSTROUTING -o eth1 -j MASQUERADE
> > > > -A POSTROUTING -o eth0 -j MASQUERADE
> > > > -A POSTROUTING -o eth1 -j MASQUERADE
> > > > -A POSTROUTING -o eth0 -j MASQUERADE
> > > > -A POSTROUTING -o eth1 -j MASQUERADE
> > > > -A POSTROUTING -o eth1 -j MASQUERADE
> > > > COMMIT
> > > > # Completed on Wed Aug 31 07:52:24 2005
> > > > [root@rio ~]# cat /proc/sys/net/ipv4/ip_forward
> > > > 1
> > > > [root@rio ~]#  
> > > > 
> > > > Thanks for all your help and suggestions.  It
> > will
> > > > work.  It is just a matter of finding where
> > things
> > > are
> > > > stopping.
> > > > 
> > > > Best Regards,
> > > > 
> > > > Antonio   
> > > > 
> > > 
> > > Attached is a basic script for a firewall/router
> > > like you are using.
> > > 
> > > Simply put it somewhere on the linux box, make it
> > > executable, then as
> > > root run it.
> > > 
> > > After running this script, rerun "service iptables
> > > save" to save the
> > > rules so they load automatically when you reboot.
> > > 
> > > It should load all the rules you need for a
> > dynamic
> > > external address on
> > > eth0, a fixed internal address on eth1,  and DNS
> > on
> > > the external
> > > network.
> > > 
> > > To test that it works, simply retry (from the
> > > windows box) the ping
> > > commands I gave earlier, and even try a ping to
> > > www.yahoo.com.
> > > If they all work then you should be all set.
> > > 
> > > This was generated using fwbuilder which is
> > readily
> > > available on the net
> > > from  www.fwbuilder.org or on sourceforge.
> > > 
> > > HTH
> > > Jeff
> > > 
> > 
> > Now, I cannot access the local network and the
> > internet from the machine.  The eth0 device was
> > assigned an IP according to its MAC address and now
> > it
> > does not work, it says that it is active.  When I
> > shut
> > down the machine it gave me some weird message which
> > I
> > do not know how to get since I am sending this email
> > from the other machine which has internet access in
> > my
> > classroom.  
> > Is there a way to solve this issue?
> > 
> > TIA
> > 
> > Antonio
> > 
> > 
> > 		
> > ____________________________________________________
> > Start your day with Yahoo! - make it your home page 
> > http://www.yahoo.com/r/hs 
> >  
> > 
> > -- 
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> > To unsubscribe:
> > http://www.redhat.com/mailman/listinfo/fedora-list
> > 
> 
> I used a floppy to access dmesg and ipconfig -a so you
> could see the weird messages I get.
> 
> TIA
> 
> Antonio

1.  That should not be going to the dmesg output!  On mine the logging
from iptables goes to /var/log/messages. (Although I have not tried a
firewall on FC4 yet so I will check that.)

2.  The queries to ports 137 and 138 are routine net-bios data from the
windows world.  The queries are not a problem, the verbose logging is.



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