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Re: LVS-NAT [real servers can't get off to internet.]

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: LVS-NAT [real servers can't get off to internet.]
From: Joseph Mack <mack.joseph@xxxxxxx>
Date: Tue, 23 Dec 2003 13:35:29 -0500
Serhan Sevim wrote:
> 

> The problem is that the real servers can't get off to internet, (2 windows2k
> boxes)
> using only non-arpable ip's.(Gateways on the real servers has been set to
> director's IP)

1. RIPs can arp with LVS-NAT. I don't know how you got LVS-NAT to work with 
non-arping RIPs 

2. If the realservers need to connect with machines outside the LVS, then 
for security you should only let out the packets for those services

see 

http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.3-Tier.html

for how to do it with LVS-DR.

You should only NAT out the services needed via the director, not all of them

http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.LVS-NAT.html#client_on_realserver

Joe

-- 
Joseph Mack PhD, High Performance Computing & Scientific Visualization
SAIC, Supporting the EPA Research Triangle Park, NC 919-541-0007
Federal Contact - John B. Smith 919-541-1087 - smith.johnb@xxxxxxx
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