LARTC - Mar 2003 - Need some advice

Greetings!

I''ve been struggling for a few days now with something that gives me a
headache ''cause I''m not really an iproute expert, nor even an
advanced
user. I''ve browsed through the archives, HOWTO''s and such but
didn''t pick
up anything particularily useful to help me with my little problem.

I have two network cards installed on a single RedHat8 Linux (2.4.18-14)
box, each interface has it''s own dedicated IP address, both have the
same
mask and gateway. Now, what I''m trying to do is dedicate eth1 to
icecast (a
stream server) only, so that any other outgoing/incoming traffic (HTTP,
FTP, SSH, ICMP etc) would use eth0.

I managed to set up my firewall (with fwbuilder, iptables) so that only
icecast answers on eth1 and the rest of the allowed services on eth0. But
clearly whether you connect to http on eth0 or icecast on eth1, there is
traffic only on eth1 (at least when you look at "netstat -i" or
Tx_Bytes &
Rx_Bytes in /proc/net/PRO_LAN_Adapters/eth*.info). That''s probably
because
"ip route ls" shows that Red Hat has set eth1 as my default gw. 

So.. I guess what I''m asking is what would the right "ip"
commands be
that''d allow me to set up my routes in such a way that would make all
this
possible? .. and moreover, how do I get Red Hat scripts not to mess with
those settings.. ;-)

Thanks in advance! Excuse me if my explanation is not very clear, too much
monitor tan for today.


_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

Jesper....

(Sorry for brief reply...work, work, work...)

Try something like this

# echo 5 icecast >> /etc/iproute2/rt_tables
# ip rule add from $ETH1_IP table icecast
# ip route add default via $ETH1_GW table icecast

Does that make sense?

Read up on it here:

  http://linux-ip.net/html/routing-tables.html
  http://linux-ip.net/html/routing-selection.html

Good luck,

-Martin

 : Greetings!
 :
 : I''ve been struggling for a few days now with something that gives me
a
 : headache ''cause I''m not really an iproute expert, nor even
an advanced
 : user. I''ve browsed through the archives, HOWTO''s and such
but didn''t pick
 : up anything particularily useful to help me with my little problem.
 :
 : I have two network cards installed on a single RedHat8 Linux (2.4.18-14)
 : box, each interface has it''s own dedicated IP address, both have the
same
 : mask and gateway. Now, what I''m trying to do is dedicate eth1 to
icecast (a
 : stream server) only, so that any other outgoing/incoming traffic (HTTP,
 : FTP, SSH, ICMP etc) would use eth0.
 :
 : I managed to set up my firewall (with fwbuilder, iptables) so that only
 : icecast answers on eth1 and the rest of the allowed services on eth0. But
 : clearly whether you connect to http on eth0 or icecast on eth1, there is
 : traffic only on eth1 (at least when you look at "netstat -i" or
Tx_Bytes &
 : Rx_Bytes in /proc/net/PRO_LAN_Adapters/eth*.info). That''s probably
because
 : "ip route ls" shows that Red Hat has set eth1 as my default gw.
 :
 : So.. I guess what I''m asking is what would the right "ip"
commands be
 : that''d allow me to set up my routes in such a way that would make
all this
 : possible? .. and moreover, how do I get Red Hat scripts not to mess with
 : those settings.. ;-)
 :
 : Thanks in advance! Excuse me if my explanation is not very clear, too much
 : monitor tan for today.
 :
 :
 : _______________________________________________
 : LARTC mailing list / LARTC@mailman.ds9a.nl
 : http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
 :

-- 
Martin A. Brown --- SecurePipe, Inc. --- mabrown@securepipe.com

_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/