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RSA Keys: Use the same keys for multi tunnels?

I have three subnets on side "A" of an IPSec VPN tunnel and one subnet on side "B".  I connected each subnet on side "A" to side "B" with three different tunnels, all terminating at 192.168.0.0.

Is it ok to use the same RSA key for each of the three tunnels on Side "A"?  Or does each seperate tunnel need to have their own set of keys (one for side "A" & one for side "B"?  Also, can all the RSA key's on side "B" be the same as well?

VPN Routes from side "A" (xx.xx.xx.xxx is the same external IP address for all routes)

192.168.1.0/24:0   -> 192.168.0.0/24:0   => tun0x1020@xx.xx.xx.xxx:0
192.168.2.0/24:0   -> 192.168.0.0/24:0   => tun0x1024@xx.xx.xx.xxx:0
192.168.4.0/24:0   -> 192.168.0.0/24:0   => tun0x1026@xx.xx.xx.xxx:0)

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0 bagira over 20 years ago

That should work! The vpnroutes tells you, that all three tunnels are up and working!
/bagira
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0 Jhaislet over 20 years ago in reply to bagira

Thanks for the reply. Yeah, all sides are working great and can see each other, I was just asking mainly if it was ok to use the SAME RSA key for all three tunnels. Mainly worried if this would present some sort of security issue.
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0 Jhaislet over 20 years ago in reply to bagira

Thanks for the reply. Yeah, all sides are working great and can see each other, I was just asking mainly if it was ok to use the SAME RSA key for all three tunnels. Mainly worried if this would present some sort of security issue.
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