IPSEC NETLINK errors
Harald Hoyer
harald at redhat.com
Tue May 11 15:40:28 UTC 2004
Do you have
net.ipv4.ip_forward = 1
in /etc/sysctl.conf ??
Nathanael Noblet wrote:
> Hello,
> I'm a little unsure of where to post this problem, but google turned
> up some results relating to it on this list I figured I might at least
> get a pointer of where to go.
>
> I am attempting to setup an IPSEC VPN in a net-to-net configuration.
> I've done it with freeswan/openswan and openvpn, so do know a bit about
> the stuff going on. I recently learned that the RH supplied kernels
> contain the 2.6 IPSEC stack backported, and the package ipsec-tools can
> be used to set up these tunnels. I started to learn the setkey to
> manually set one up. As I did that I found out that the
> redhat-config-network contains a tab for IPSEC stuff. Made me happy.
> Unfortunately I can't get it to work. The command ifup ipsec0 returns
> with NETLINK answers: Network is unreachable.
> here is my ifcfg-ipsec0 file
>
> # COMP A ifcfg-ipsec0
> DSTGW=192.168.0.1
> SRCGW=10.0.0.1
> DSTNET=192.168.0.0/24
> SRCNET=10.0.0.0/24
> DST=24.72.x.x
> TYPE=IPSEC
> ONBOOT=no
>
> --------------
> ---------------
> 10.0.0.0/24---| COMP A | 24.68.x.x --- internet --- 24.72.x.x | COMP B |
> --- 192.168.0.0/24
> --------------- ---------------
>
> I've tried 2 different configuration setups with the compA's
> ifcfg-ipsec0 file.
> this is the other one
> # COMP A ifcfg-ipsec0
>
> DSTGW=24.72.x.x
> SRCGW=24.68.x.x
> DSTNET=192.168.0.0/24
> SRCNET=10.0.0.0/24
> DST=24.72.x.x
> TYPE=IPSEC
> ONBOOT=no
>
> my iptables contain on both sides...
>
> iptables -t udp -p udp --dport 500 -j ACCEPT
> iptables -p 50 -j ACCEPT
> iptables -p 51 -j ACCEPT
>
>
> So my two questions are:
> 1) What am I doing wrong?
> 1a) How can I get greater debug info if that is what is needed?
> 2) If here isn't a good place to ask the above question, where do I go?
>
>
> Thanks for any help you can provide.
>
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