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*SOLVED* NAT/MASQUERADING inside VZ [message #4852]

Sat, 29 July 2006 09:19

Plnt
Messages: 2
Registered: June 2006
Location: Prague, Czech Republic

Junior Member

Hi,

I've successfuly created OpenVPN connection to VZ using tun interface. Now I need to do NAT inside VZ but I wasn't able to set-up rule for iptables:

zone1:~# iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -j MASQUERADE
FATAL: Could not load /lib/modules/2.6.16-026test014/modules.dep: No such file or directory
iptables v1.3.3: can't initialize iptables table `nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

Module ipt_MASQUERADE is loaded on host computer.

Same problem is with SNAT:

zone1:~# iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -j SNAT --to-source x.x.x.x
FATAL: Could not load /lib/modules/2.6.16-026test014/modules.dep: No such file or directory
iptables v1.3.3: can't initialize iptables table `nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

zone1:~# iptables -t nat -L
FATAL: Could not load /lib/modules/2.6.16-026test014/modules.dep: No such file or directory
iptables v1.3.3: can't initialize iptables table `nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

Do I need to enable something for VZ like when using NAT on host computer? Is it possible to do NAT inside VZ?

Thanks,
Jan

[Updated on: Mon, 31 July 2006 05:28] by Moderator

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Re: NAT/MASQUERADING inside VZ [message #4855 is a reply to message #4852]

Sat, 29 July 2006 13:53

Vasily Tarasov
Messages: 1345
Registered: January 2006

Senior Member

What about IPTABLES parameter in your /etc/vz/vz.conf?

[Updated on: Sat, 29 July 2006 13:54]

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Re: NAT/MASQUERADING inside VZ [message #4860 is a reply to message #4855]

Sat, 29 July 2006 21:26

Plnt
Messages: 2
Registered: June 2006
Location: Prague, Czech Republic

Junior Member

vass wrote on Sat, 29 July 2006 15:53

What about IPTABLES parameter in your /etc/vz/vz.conf?

I totally forgot this. I've added iptable_nat parameter and everything is working fine, now.

Thanks for hint.

Jan

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Re: *SOLVED* NAT/MASQUERADING inside VZ [message #23856 is a reply to message #4852]

Wed, 28 November 2007 07:41

doublet
Messages: 6
Registered: November 2007

Junior Member

Hi,I have same problem but there's no /etc/vz/vz.conf, no idea about where could it be.

Anyway, I'm using a provider VPS, so i don't know if problem is in node on inside my VPS.

Any idea?

[root@swol~]# iptables -t nat -A PREROUTING -p tcp -d 10.20.30.40 --dport 40 -j DNAT --to-destination 10.20.30.50:70
iptables v1.2.11: can't initialize iptables table `nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

[root@swol~]# iptables -L -t nat
iptables v1.2.11: can't initialize iptables table `nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

Thanks in advance =)

[Updated on: Wed, 28 November 2007 07:45]

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Re: *SOLVED* NAT/MASQUERADING inside VZ [message #31784 is a reply to message #23856]

Thu, 10 July 2008 00:09

adeeln
Messages: 6
Registered: July 2007

Junior Member

doublet wrote on Wed, 28 November 2007 02:41

Hi,I have same problem but there's no /etc/vz/vz.conf, no idea about where could it be.

Anyway, I'm using a provider VPS, so i don't know if problem is in node on inside my VPS.

/etc/vz/vz.conf ONLY exists in the Host Node, so if it's a provider VPS, you can't do anything about it except ask them to do it for you.

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Re: *SOLVED* NAT/MASQUERADING inside VZ [message #42693 is a reply to message #4852]

Thu, 12 May 2011 03:07

mad4solusvm
Messages: 7
Registered: May 2011
Location: UK

Junior Member

I am trying to get NAT to work inside my CentOS node.

I have the following installed

CentOS 5.6
SolusVM (Latest Stable Release)
OpenVZ Kernel (2.6.18-238.9.1.el5.028stab089.1)
2 x NIC's

Ok here goes, i have 2 sets of IP's set inside the node a set of private / local IP's and a block of external IP's. Im trying to issue my VPS containers with private IP addresses issued by the router using NAT, However dispite the fact i can see the private ip's in the routers ARP Table. i carnt get to the servers using thier assigned private IP's. however if i assign one of the external IP's i can get to the server just fine.

Just for the record, I've checked the /etc/vz/vz.conf file on the node in question for the iptable_nat parameter and can report back that it is in there.

Does anyone have any ideas why i can not do this? and also how i can fix it?, if at all possible.

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