Subj : IPv6 connection refused
To   : All
From : Michiel van der Vlist
Date : Mon Dec 18 2017 14:46:28

Hello All,

When I try to make a binkp connect to 2:5030/74, I get a "Connection refused" on IPv6. On IPv4 I get a normal connect.

+ 14:46 [1796] call to 2:5030/74@fidonet
  14:46 [1796] trying f74.n5030.z2.binkp.net [2a05:3580:de00:1687:21f:c6ff:fe1e:b46a]...
? 14:46 [1796] connection to 2:5030/74@fidonet failed: {W32 API error
               10061} Connection refused
  14:46 [1796] trying f74.n5030.z2.binkp.net [188.242.45.253]:24554...
  14:46 [1796] connected
+ 14:46 [1796] outgoing session with f74.n5030.z2.binkp.net:24554 [188.242.45.253]
- 14:46 [1796] OPT CRAM-MD5-6eb76112e5d5c6080fa14db4b8d095ee
+ 14:46 [1796] Remote requests MD mode
- 14:46 [1796] SYS Cat's Shadow
- 14:46 [1796] ZYZ Michael Skolsky

An IPv6 port scan says that port 24554 is open. When I try Putty at the IPv6 adress, I see the initial response from hin binkp.

I have not seen this behaviour before. Anyone have any idea what causes the IPv6 connect to be refused and the IPv4 connect accepted?


Cheers, Michiel

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