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*SOLVED* MASQUERADE with IPTables in a VPS [message #7700]

Sat, 21 October 2006 09:30

slg2001
Messages: 20
Registered: March 2006
Location: Germany

Junior Member

Hello,

i can't add a iptalbes Rule for masquerading in the VPS where my OpenVPN-Server is running, at the HN is it no problem to add someone!

VPS-Network=192.168.120.0/24
OpenVPN-Network= 5.5.0.0/24

VPS IPtalbes-Config

IPTABLES="iptable_filter iptable_mangle ipt_limit ipt_multiport ipt_tos ipt_TOS ipt_REJECT ipt_TCPMSS ipt_tcpmss ipt_ttl ipt_LOG ipt_length ip_conntrack ip_conntrack_ftp ip_conntrack_irc ipt_conntrack ipt_state ipt_helper iptable_nat ip_nat_ftp ip_nat_irc ipt_REDIRECT "

Loaded IPTables Modules at the HN

[root@hn ~]# lsmod | grep ipt
ipt_MASQUERADE          1632  0
iptable_nat             7716  3
ip_nat                 13300  2 ipt_MASQUERADE,iptable_nat
ip_conntrack           47300  4 xt_state,iptable_nat,ip_nat
ipt_ttl                 1568  5
ipt_TCPMSS              3552  5
iptable_mangle          3520  5
iptable_filter          3232  7
ipt_multiport           2496  10
ipt_tos                 1344  5
ipt_REJECT              4256  7
ip_tables              11356  3 iptable_nat,iptable_mangle,iptable_filter
x_tables               12544  13 ipt_MASQUERADE,xt_state,iptable_nat,xt_tcpudp,xt_length,ipt_ttl,xt_tcpmss,ipt_TCPMSS,ipt_multiport,xt_limit,ipt_tos,ipt_REJECT,ip_tables
[root@hn ~]#

add a iptables rule at the VPS

[root@vps ~]# iptables -t nat -A POSTROUTING -s 5.5.0.0/24 -j MASQUERADE
iptables: No chain/target/match by that name
[root@vps ~]# iptables -L -t nat
Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination

Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination
[root@vps ~]#

add a iptalbes rule at the HN

[root@hn ~]# iptables -t nat -A POSTROUTING -s 5.5.0.0/24 -j MASQUERADE
[root@hn ~]# iptables -t nat -L
Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination
MASQUERADE  all  --  5.5.0.0/24           anywhere

Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination
[root@hn ~]#

Some infromations about the Hardware-Node

[root@hn ~]# uname -r
2.6.16-026test018.1.custom
[root@hn ~]#

I hope i don't forgot any information!
Thx for your help.

slg2001

Attachment: kernel-2.6.16-026test018-i686.config.ovz
(Size: 35.96KB, Downloaded 276 times)

To follow the path:
look to the master, follow the master, walk with the master, see through the master, become the master.

[Updated on: Mon, 23 October 2006 05:54] by Moderator

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Re: MASQUERADE with IPTables in a VPS [message #7703 is a reply to message #7700]

Sat, 21 October 2006 12:30

curx
Messages: 739
Registered: February 2006
Location: Nürnberg, Germany

Senior Member

Hi,

a look to the man page of vzctl shows me that the "ipt_MASQUERADE" is not in the IPTABLES MODULE LIST!
So you can't use the module ipt_MASQUERADE!

--iptables name
Restrict access to iptables modules inside a VE (by default
all iptables modules that are loaded in the host system are
accessible inside a VE).

You can use the following values for name: iptable_filter,
iptable_mangle, ipt_limit, ipt_multiport, ipt_tos, ipt_TOS,
ipt_REJECT, ipt_TCPMSS, ipt_tcpmss, ipt_ttl, ipt_LOG,
ipt_length, ip_conntrack, ip_conntrack_ftp, ip_con-
ntrack_irc, ipt_conntrack, ipt_state, ipt_helper, ipt-
able_nat, ip_nat_ftp, ip_nat_irc, ipt_REDIRECT xt_mac.

[Updated on: Sat, 21 October 2006 12:46]

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