Config Debian Become To Linux Box Routing

May 7, 2009

my plan for the network is:

LAN (10.0.0.0/24) > (eth0: 10.0.0.62) Debian Router (eth1: 172.16.0.62) > modem (172.16.0.1) > internet

I have change /proc/sys/net/ipv4/ip_forward from 0 to 1
and Routing table is:

Destination Gateway Genmask Flags Metric Ref Use Iface
172.16.0.62 * 255.255.255.255 UH 0 0 0 eth0
10.0.0.62 * 255.255.255.255 UH 0 0 0 eth0
10.0.0.0 10.0.0.62 255.255.255.0 UG 0 0 0 eth0
10.0.0.0 * 255.255.255.0 U 0 0 0 eth0
172.16.0.0 172.16.0.62 255.255.255.0 UG 0 0 0 eth1
172.16.0.0 * 255.255.255.0 U 0 0 0 eth1
default 172.16.0.1 0.0.0.0 UG 0 0 0 eth1

But client not connect internet when use debian router

config debian router?

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Feb 15, 2007

I have the following problem with a CentOS server:

The main IP of the server is yyy.zzz.www.qqq

We've just purchased 3 additional IPs: aaa.bbb.ccc.100, aaa.bbb.ccc.101, aaa.bbb.ccc.102.

First, all outgoing traffic used aaa.bbb.ccc.100, but after deleting the gateways from the additional IPs it seemed to work fine, until we found out the following:

Now all traffic to aaa.bbb.ccc.XXX uses aaa.bbb.ccc.100 as outgoing IP.

What command would change this to use our main IP?

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Jun 3, 2008

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What do you need to configure?

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Jul 18, 2007

how to set up networking for the following..

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Ideally I would like the 2 VMs to use my spair 2 internet IPs. However they are assigned to the NIC on the real windows server. How can I route 2 of these ip addressess to the 2 VMs?

Baring in mind that the windows server has only 1 NIC (used for the internet)

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Mar 14, 2007

I have two RedHat EL 4 boxes linked via a cross-connect. One is a web server (10.0.0.3) and one is a mySQL server (10.0.0.2), the interface between them is eth1 on both machines and a second interface eth0 connects to the internet.

I want to use the web server to send queries to the database server via eth1, 10.0.0.2:3306 in this case. If I send a database query via eth1 there is a delay of about 10-20 seconds before the result comes back. If I send the same query to the database server but use it's main IP instead of the internal IP so that the query is being sent to it over the internet (xx.xx.xx.xx:3306), the result comes back instantly.

Similarly, if I send a query from any remote server the result is instant.

Why should there be such a huge delay when sending a query directly through the cross-connect?

The routing table ( ip route show ) for the web server is:

xx.xx.xx.xx/xx dev eth0 proto kernel scope link src xx.xxx.xx.xx
10.0.0.0/24 dev eth1 proto kernel scope link src 10.0.0.3
default via xx.xx.xx.xx dev eth0

and the routing table on the database server is:

xx.xx.xx.xx/xx dev eth0 proto kernel scope link src xx.xx.xx.xx
10.0.0.0/8 dev eth1 proto kernel scope link src 10.0.0.2
default via xx.xx.xx.xx dev eth0

I have ifcfg-eth1 on both boxes:

DEVICE=eth1
ONBOOT=yes
TYPE=Ethernet
IPADDR=10.0.0.3 / 10.0.0.2
NETMASK=255.255.255.0

Both boxes can ping each other and transfer files using wget without any apparant problems or delays.

Anyone have any ideas on how to fix this 10-20 second delay when sending queries through the cross-connect?

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Quote:

Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 1 30140 242099518+ 83 Linux
/dev/sda2 30141 30401 2096482+ 82 Linux swap / Solaris

Disk /dev/sdb: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdb doesn't contain a valid partition table

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HTML Code:
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Also,
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[URL] ....

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I think what I need is this..

$ext_net1 = external nework IP/MASK 1
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