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WANIPv6Firewallcontrol

 
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sseidel



Joined: 10 Feb 2015
Posts: 8

PostPosted: Tue Feb 10, 2015 9:40 am    Post subject: WANIPv6Firewallcontrol Reply with quote

I tried to use the method AddPinhole with the upnpc Sample client but my requests get refused with the error code

606 Action not authorized
This error occurs everytime the lease time is unequal zero
example:
upnpc -A 2::2 40000 2001:db8::2 4000 TCP 5

The upnpd says
client :: tried to access pinhole for internal 2001:db8::2 and is not authorized to do it.


My Question is what I have to do to create an IPv6 Pinhole?
Are their any settings in the daemon I have to set to allow it?
I tried to insert the line
allow 0-10000 ::/0 0-10000

but the upnp daemon reported a parsing error


What I have to create a pinhole for all remote clients?
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miniupnp
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Joined: 14 Apr 2007
Posts: 1391

PostPosted: Tue Feb 10, 2015 1:31 pm    Post subject: Reply with quote

what versions are you using as daemon / client.
Which OS ?
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sseidel



Joined: 10 Feb 2015
Posts: 8

PostPosted: Tue Feb 10, 2015 2:01 pm    Post subject: Reply with quote

okay, I get it running. I discovered that I have to use IPv6 to perform AddPinhole successfully.

The following worked.

upnpc -6 2001:db8:0:1::2 0 2001:db8::2 2222 TCP 10

Where 2001:db8::2 is the client.

Nevertheless I am missing a few features.

http://upnp.org/specs/gw/UPnP-gw-WANIPv6FirewallControl-v1-Service.pdf tells that the remote Host can be wildcarded. This would be a every nice feature but up to now I couldn't find any possibility to do this.


Another issue:
The upnp daemon checks whether the Source IPv6 address of the IPv6 Packets equals the IPv6 address of the InternalClient when perfoming the operation AddPinhole(). This is problematic because hosts usually use privacy extensions to send packets, but for a listening service it would be better to use the EUI-64 address of the interface.


I would be every happy if this to aspects could be changed.
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miniupnp
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Joined: 14 Apr 2007
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PostPosted: Tue Feb 10, 2015 2:13 pm    Post subject: Reply with quote

you can remove/comment the following code in upnpsoap.c, function PinholeVerification()
Code:
if(strcmp(senderAddr, int_ip) != 0)
   if(h->clientaddr_v6.s6_addr != result_ip.s6_addr)
   {
      syslog(LOG_INFO, "Client %s tried to access pinhole for internal %s and is not authorized to do it",
             senderAddr, int_ip);
      SoapError(h, 606, "Action not authorized");
      return 0;
   }

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sseidel



Joined: 10 Feb 2015
Posts: 8

PostPosted: Tue Feb 10, 2015 2:32 pm    Post subject: Reply with quote

okay, sounds good. I will modified it that only the first 64bits will be checked.

In upnppinhole.c I saw the following lines
Code:
static const char cmdval_full_udptcp[] = "ip6tables -I %s %d -p %s -i %s -s %s --sport %hu -d %s --dport %hu -j ACCEPT";
   static const char cmdval_udptcp[] = "ip6tables -I %s %d -p %s -i %s --sport %hu -d %s --dport %hu -j ACCEPT";
   static const char cmdval_full_udplite[] = "ip6tables -I %s %d -p %s -i %s -s %s -d %s -j ACCEPT";
   static const char cmdval_udplite[] = "ip6tables -I %s %d -p %s -i %s -d %s -j ACCEPT";
   // raw table command
   static const char cmdval_full_udptcp_raw[] = "ip6tables -t raw -I PREROUTING %d -p %s -i %s -s %s --sport %hu -d %s --dport %hu -j TRACE";
   static const char cmdval_udptcp_raw[] = "ip6tables -t raw -I PREROUTING %d -p %s -i %s --sport %hu -d %s --dport %hu -j TRACE";
   static const char cmdval_full_udplite_raw[] = "ip6tables -t raw -I PREROUTING %d -p %s -i %s -s %s -d %s -j TRACE";
   static const char cmdval_udplite_raw[] = "ip6tables -t raw -I PREROUTING %d -p %s -i %s -d %s -j TRACE";


You are just creating "plain" netfilter rules right?

I have the aim to have rules which looks like the following

Source-IP--------SourcePort---destionation-IP---Destination-Port
2001:db8::/32---anyPort------2001:db7::1/128---22

or
::/0---------------anyPort------2001:db7::1/128---22


up to now i can wildcard the sourceport, but I also need to wildcard the source IP or specify a prefix and a prefix-length, where the prefix-length can have any value from 0 to 128

Maybe you could give me a hint, where I can change this?

EDIT:
maybe this needs a modification in the client an not in the server.
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miniupnp
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PostPosted: Tue Feb 10, 2015 2:41 pm    Post subject: Reply with quote

try empty string as source ip (remote host)
Code:
upnpc -6 -A "" 0 2001:db8::2 2222 TCP 10

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sseidel



Joined: 10 Feb 2015
Posts: 8

PostPosted: Tue Feb 10, 2015 2:45 pm    Post subject: Reply with quote

Doesn't work. The result is ::/128

I also tried the following with the same result. The prefix-length is always 128
Code:
upnpc -6 -A "::/0" 0 2001:db8::2 2222 TCP 10
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miniupnp
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PostPosted: Tue Feb 10, 2015 3:04 pm    Post subject: Reply with quote

sseidel wrote:
Doesn't work. The result is ::/128

I also tried the following with the same result. The prefix-length is always 128
Code:
upnpc -6 -A "::/0" 0 2001:db8::2 2222 TCP 10

Check this patch :
https://github.com/miniupnp/miniupnp/commit/6e5d8ce9540221b894b77de0a3c5b582b673a2d2
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sseidel



Joined: 10 Feb 2015
Posts: 8

PostPosted: Tue Feb 10, 2015 3:19 pm    Post subject: Reply with quote

It works. Perfect, thank you very much.
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