Two Default Gateways

Jun 30, 2008

I'm trying to add a second nic to one of my servers.

eth0 is connected directly to the internet on a public IP.

eth1 is connected to a private network 172.16.0.0/24.

When I try to add the eth1, I can no longer reach my server from the public address. The gateway for eth1 is 172.16.0.1.

If I leave the gateway field blank for eth1, the server can still be reached on the public address and can also talk to clients on the lan. However, I would really like to figure out why I can't add the default gateway parameter.

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Two Different Gateways

Mar 11, 2007

We have used till this very moment a fixed IP address space (lets consider 192.168.0.0/25 (128 IP's), with 192.168.0.1 being the GW). Now we have run out of IP address and our provider is not able to offer us the upper IP address space on the same range we have, so we have been offered a new IP address space (let's consider 192.168.1.0/25 with 192.168.1.1 being the GW).

Both this are configured on a cisco 3550 switch (provider side). We have behind that a 3550 of our own, for subnetting and VLAN purposes (we are getting every server a /29 on a VLAN with a default GW and so on. Typical setup).

The problem is, how are we supposed to route the new ip address space? Can we add a second gateway to the 3550 and traffic will get to it if it comes from the new IP block?

We had also thought about PBR, but 3550-SMI does not seem to support that.

Can you give us a clue on the best config to solve this issue?

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Dec 5, 2008

OpenVZ different gateways IP ranges, unpingable from outside world "feature" any fix?

The server main IP (eth0) is 200.44.32.42, the allocation is 200.44.32.40/29 - 200.44.32.41 being the GATEWAY.

The ADDITIONAL IP allocation is 200.44.32.96/28, 200.44.32.97 being the GATEWAY.

Now, if I be specific on /etc/sysconfig/network-scripts/ifcfg-eth0 and declare everything like so:

DEVICE=eth0
BOOTPROTO=none
BROADCAST=10.20.47.255
HWADDR=
IPADDR=10.20.42.198
NETMASK=255.255.248.0
NETWORK=10.20.40.0
ONBOOT=yes
GATEWAY=10.20.40.1
TYPE=Ethernet

Please ignore all the above IPs config.

Now, using that VE nodes on the 200.44.32.96/28 range are unpingable. How can I fix that?

Please take note that I remove all settings from ifcfg, and leave IPADDR and GATEWAY, the internet can ping the nodes. But within the 200.44.32.0/24 no-one can ping the nodes on the 200.44.32.96/28 range ( Which is my problem, that I came here to solve).

Here's the VE ...

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I entered a support ticket for one company and they said the permissions were not right and supposedly fixed it (I have left that company since then so I can't check).

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Apparently the apache installation defaults to these permissions which, security wise, seems kinda strange.

Can anyone shed some light on whether or not this is secure and does this mean I'm going to have change permissions evertime I upload files to install shopping carts, billing software etc.? (It's not hard it's just stupid to have to).

Should my hosts change apache system umask (022) to make permissions default to 755/644?

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Please visit this video File. You can see my Error.www.visionlanka.com/20081124.avi

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When i use this command, i get following error

Quote:

root@server40 [~]# rsync -a -v -e ssh --port=3333 --progress --timeout=0 -e ssh /var/cpanel/packages root@server42.hostname.com:/var/cpanel/
ssh: connect to host server42.hostname.com port 22: Connection refused
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
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root@server40 [~]#

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Also i am able to connect to other server on port 3333

Quote:

root@server40 [~]# telnet server42.hostname.com 3333
Trying 72.9.145.200...
Connected to server42.hostname.com (72.9.145.200).
Escape character is '^]'.
SSH-2.0-OpenSSH_3.9p1

why rsync is not working?

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Is there a way, while live, to set the outbound adapter back to eth0?

Please note, that I have only just realized this has happened. In fact, it has been this way since November. I can tell because server name stamps on Email messages sent from this server indicate a virtual domain at that IP address. I recall I had done some work around that time, which had involved me ifup'ing and ifdown'ing some of these adapters (but not eth0, or the eth0:100 adapter (if I recall correctly) that is now the default).

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