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On 01/07/2017 08:35 AM, Luke Jordan wrote:
> Am 26.12.2016 um 22:44 schrieb Tom Eastep:
>>
>> My personal approach to multiple IPv6 providers is to assign my
>> local networks prefixes delegated from one of my provider's
>> routers and simply use SNAT when sending traffic out of the other
>> provider. That is stateful and supports problem protocols like
>> FTP.
>
> can you give me an configuration example for this?
I have two providers, IPv6Beta and HE.
/etc/shorewall6/shorewall6.conf:
USE_DEFAULT_RT=Yes
/etc/shorewall6/providers:
IPv6Beta 1 0x100 - eth0 fe80::22e5:2aff:feb7:f2cf\
track,primary,loose,persistent
HE 2 0x200 - sit1 - track,fallback,persistent
Most local networks have IPv6 addresses delegated by the router on
eth0 and are in 2601:601:8b00:bf0::/60 (as is the address of eth0)
I have one local network that has addresses routed via sit1
(2001:470:b:227::/64). The IP address of sit1 is 2001:470:a:227::2
/etc/shorewall6/snat:
SNAT(&sit1) 2601:601:8b00:bf0::/60 sit1
SNAT(ð0) 2001:470:b:227::/64,2001:470:a:227::2 eth0
When I was running a version of Shorewall that still used the masq
file, the corresponding entries were:
sit1 2601:601:8b00:bf0::/60 &sit1
IPv6Beta 2001:470:b:227::/64,2001:470:a:227::2 ð0
/etc/shorewall6/rtrules:
2001:470:B:227::/64 ::/0 HE 11000
2601:601:8b00:bf0::/60 ::/0 IPv6Beta 11000
>
>> In Netfilter, NPT is stateless, so it is a pain to use. There is
>> therefore no formal support for NPT in Shorewall6 (the
>> shorewall6-netmap(5) file is no longer usable since the
>> Netfilter rawpost table has been removed). It is possible to
>> configure NTP in shorewall-mangle(5) (assuming that your kernel
>> and ip6tables support the SNPT and DNPT targets) but there is
>> currently no documentation for how to do that.
>>
>> A brief outline of what is required:
>>
>> Add SNTP and DNPT as a builtin actions in
>> /etc/shorewall6/actions:
>>
>> SNPT builtin,mangle,terminating DNPT builtin,mangle,terminating
>>
>> To configure DNPT in the shorewall6/mangle file:
>>
>> IP6TABLES(DNPT --src-pfx <prefix/length> --dst-pfx
>> <prefix/length> ):P ...
>>
>> and to configure SNPT:
>>
>> IP6TABLES(SNPT --src-pfx <prefix/length> --dst-pfs
>> <prefix/length> ):T ...
>>
>> See iptables-extensions(8) for additional information on SNPT
>> and DNPT. In particular, you must disable connection tracking for
>> the translated flows in shorewall-conntrack(5).
>
> it doesn't work:
>
> /etc/shorewall6/mangle: MARK(768):P eth0 - tcp
> 22,47238,52486 #
> ssh traffic by dsl MARK(512):P eth0 - -
> - # other traffic by
> cbl
>
> IP6TABLES(DNPT --src-pfx 2001:XXXX:YYYY:100::/64 --dst-pfx
> fdae:fa7:dead:beef::/64 ):P eth0 - - -
>
> IP6TABLES(SNPT --src-pfx fdae:fa7:dead:beef::/64 --dst-pfx
> 2001:XXXX:YYYY:100::/64 ):P eth0 - - -
>
> result:
>
> Checking /etc/shorewall6/mangle... ERROR: Invalid ACTION
> (IP6TABLES(DNPT --src-pfx 2001:XXXX:YYYY:100::/64 --dst-pfx
> fdae:fa7:dead:beef::/64 ):P) /etc/shorewall6/mangle (line 18)
>
> fdae:fa7:dead:beef::/64 is the local network,
> 2001:XXXX:YYYY:100::/64 the network of a provider.
>
Did you add DNPT as a nat builtin action in /etc/shorewall6/actions?
- -Tom
- --
Tom Eastep \ When I die, I want to go like my Grandfather who
Shoreline, \ died peacefully in his sleep. Not screaming like
Washington, USA \ all of the passengers in his car
http://shorewall.net \________________________________________________
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=+BOo
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