| *SOLVED* CentOS 5 - IPTables NAT problem [message #24848] |
Tue, 11 December 2007 10:55  |
Thomasd
Messages: 39
Registered: December 2007
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latest version of the kernel
# uname -r
2.6.18-53.el5.028stab051.1
# iptables -t nat -L
iptables v1.3.5: can't initialize iptables table `nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
# lsmod | grep nat
<nothing>
# modprobe -l | grep ip_nat
/lib/modules/2.6.18-53.el5.028stab051.1/kernel/net/ipv4/netf ilter/ip_nat_tftp.ko
/lib/modules/2.6.18-53.el5.028stab051.1/kernel/net/ipv4/netf ilter/ip_nat_sip.ko
/lib/modules/2.6.18-53.el5.028stab051.1/kernel/net/ipv4/netf ilter/ip_nat_pptp.ko
/lib/modules/2.6.18-53.el5.028stab051.1/kernel/net/ipv4/netf ilter/ip_nat_irc.ko
/lib/modules/2.6.18-53.el5.028stab051.1/kernel/net/ipv4/netf ilter/ip_nat_h323.ko
/lib/modules/2.6.18-53.el5.028stab051.1/kernel/net/ipv4/netf ilter/ip_nat_ftp.ko
/lib/modules/2.6.18-53.el5.028stab051.1/kernel/net/ipv4/netf ilter/ip_nat_snmp_basic.ko
/lib/modules/2.6.18-53.el5.028stab051.1/kernel/net/ipv4/netf ilter/ip_nat.ko
/lib/modules/2.6.18-53.el5.028stab051.1/kernel/net/ipv4/netf ilter/ip_nat_amanda.ko
# modprobe ip_nat
WARNING: Error inserting ip_conntrack (/lib/modules/2.6.18-53.el5.028stab051.1/kernel/net/ipv4/net filter/ip_conntrack.ko): Unknown symbol in module, or unknown parameter (see dmesg)
FATAL: Error inserting ip_nat (/lib/modules/2.6.18-53.el5.028stab051.1/kernel/net/ipv4/net filter/ip_nat.ko): Unknown symbol in module, or unknown parameter (see dmesg)
# dmesg -c
ip_conntrack: parameter ip_conntrack_enable_ve0 is obsoleted. In ovzkernel >= 2.6.15 connection tracking on hardware node is enabled by default, use ip_conntrack_disable_ve0=1 parameter to disable.
ip_conntrack: Unknown parameter `='
ip_nat: Unknown symbol invert_tuplepr
ip_nat: Unknown symbol ip_conntrack_untracked
ip_nat: Unknown symbol ip_conntrack_htable_size
ip_nat: Unknown symbol ip_conntrack_tcp_update
ip_nat: Unknown symbol ip_conntrack_tuple_taken
ip_nat: Unknown symbol ip_ct_get_tuple
ip_nat: Unknown symbol ip_conntrack_alter_reply
ip_nat: Unknown symbol __ip_conntrack_proto_find
ip_nat: Unknown symbol ip_ct_iterate_cleanup
In short, I am trying to use NAT so that I can have several virtual machines using one IP, but it seem like the NAT table just doesn't work.
When I look on google, I've seen others with the same issue, but no obvious fix.
[Updated on: Tue, 11 December 2007 20:13] by Moderator Report message to a moderator |
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| Re: CentOS 5 - IPTables NAT problem [message #24899 is a reply to message #24867] |
Tue, 11 December 2007 19:58  |
Thomasd
Messages: 39
Registered: December 2007
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Member |
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it works!
here was the problem:
I had "options ip_conntrack ip_conntrack_enable_ve0 = 1"
but the spaces around the '=' were causing improper parameters to be passed to the ip_conntrack module.
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