I have set up a home lan with two Gentoo boxes, GentooA & GentooB.
GentooA ifconfig shows the following:
eth0 Link encap:Ethernet HWaddr 00:0X:XX:XX:XX:XX
inet addr:24.136.XXX.XXX Bcast:255.255.255.255 Mask:255.255.255.192
UP BROADCAST NOTRAILERS RUNNING MTU:1500 Metric:1
RX packets:10578 errors:0 dropped:0 overruns:0 frame:0
TX packets:1040 errors:0 dropped:0 overruns:0 carrier:0
collisions:29 txqueuelen:100
RX bytes:1237892 (1.1 Mb) TX bytes:152877 (149.2 Kb)
Interrupt:5 Base address:0xd800
eth1 Link encap:Ethernet HWaddr 00:XX:XX:XX:XX:XX
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:829 errors:1 dropped:0 overruns:0 frame:0
TX packets:923 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:177559 (173.3 Kb) TX bytes:803436 (784.6 Kb)
Interrupt:5 Base address:0xd000
GentooB ifconfig shows this:
eth0 Link encap:Ethernet HWaddr 00:XX:XX:XX:XX:XX
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:829 errors:1 dropped:0 overruns:0 frame:0
TX packets:923 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:177559 (173.3 Kb) TX bytes:803436 (784.6 Kb)
Interrupt:5 Base address:0xd000
GentooA route gives the following:
Destination Gateway Genmask Flags Metric Ref Use Iface
user-XXXXX.ca * 255.255.255.192 U 0 0 0 eth0
192.168.0.0 * 255.255.255.0 U 0 0 0 eth1
default user-XXXXX.ca 0.0.0.0 UG 0 0 0 eth0
default 192.168.0.1 0.0.0.0 UG 1 0 0 eth1
GentooB route shows this:
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
-------------------------------------------------------------------------------------------
Either machine can ping the other with no probs. The problem is name resolution does not occur from GentooB, whether surfing the net or "emerge rsync." I have temporarily fixed web surfing by allowing GentooB to access the squid proxy on GentooA, so I can surf the net. How do I correct the networking so that I can browse without a proxy and emerge can access the internet from GentooB?
Any help is greatly appreciated.
you need a firewall, heres a quick one to get the job done:
Code:iptables -t nat -A POSTROUTING -o eth0 -s 192.168.0.0/255 -j SNAT --to 24.136.XXX.XXX iptables -A FORWARD -i eth0 -m state --state NEW,INVALID -j DROP iptables -A FORWARD -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT iptables -A FORWARD -i eth1 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT
[quote author=gorn link=board=4;threadid=5937;start=0#56623 date=1040766970]
you need a firewall, heres a quick one to get the job done:
[/quote]
I had assumed that firestarter turned on ip forwarding, since it asks for input on both the net connection (eth0), as well as the lan connection (eth1). I have the same problem whether I use firestarter or not. Should I therefore assume that firestarter does not turn on ip forwarding?
Firestarter probably did, so I'm assuming it did for the rest..
Your routing table on box B doesn't seem to have a default route set.. Mine looks like
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
Destination 0.0.0.0 = any.. Your machine only has one routing rule on GentooB, and that just tells it how to access it's own network. To set a default route
"route add default gw 192.168.0.1" (Most distributions seem to have a network script somewhere to store this sort of thing, not sure where it is on gentoo -- you could just add that to a startup script.)
Then, you should be able to browse the net by IP at the least..
http://216.239.35.100/ sorta stuff.
If that works, but going by hostname doesn't then you need to fix DNS.
Get your DNS IP numbers, and add them to /etc/resolv.conf (each entry on it's own line like ...)
"nameserver 400.500.400.500" (replacing the 400.500.4... with your DNS IP's) To make everything simple on my LAN I run a caching DNS server on my firewall box (only accessible from internal LAN, firewalled from the internet.) Then, I just setup everything to use 192.168.0.1 as my default gateway, and 192.168.0.1 as my DNS.
[quote author=vvx link=board=4;threadid=5937;start=0#56637 date=1040772269]
Your routing table on box B doesn't seem to have a default route set.
[/quote]
BINGO!! I added the default route and now everything works. Gentoo has startup script (/etc/conf.d/net) to name the default gateway at bootup so everything just works.
Thanks to everyone for all suggestions. Now on to set up network printing with cups and then the openMosix cluster.
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