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ipv6 addresses, protocol sftp does not seem to work

  • 24-04-2012 3:04pm
    #1
    veryangryman
    Registered Users, Registered Users 2 Posts: 5,660 ✭✭✭


    Hi all, wonder if you can helo with something im working on

    On ipv6 addresses, protocol sftp does not seem to work even though on ipv4 its fine

    All attempts to contact nodes, servers, indeed any ipv6 address result in the command hanging.

    sftp <ip address>

    The protocols ftp, telnet and ssh work fine. Im not sure how to check this.

    I have checked via local channels and google if there is any special method to do sftp, but it seems that my command above is perfectly acceptable. Can you help? Hopefully its just something trivial


Comments

  • #2
    mneylon
    Registered Users, Registered Users 2 Posts: 7,740 ✭✭✭mneylon


    It could be blocked by a firewall?

    I run and access most services over v6, but don't use SFTP

    Blog | Tweets



  • #3
    croo
    Moderators, Technology & Internet Moderators Posts: 1,336 Mod ✭✭✭✭croo


    But since sftp works over ssh, if a simple ssh worked then that would narrow it down a lot.


  • #4
    veryangryman
    Registered Users, Registered Users 2 Posts: 5,660 ✭✭✭veryangryman


    Sorry to bump an old one but does anyone have any new ideas for this?


  • #5
    IRLConor
    Subscribers Posts: 4,076 ✭✭✭IRLConor


    You may need to "quote" the IPv6 address with square brackets to prevent the sftp client from accidentally parsing the address as a malformed v4 one.

    For example, this is what happens for me:
    $ sftp 2001:xxxx:xxxx:xxxx::2
ssh: connect to host 2001 port 22: No route to host
Connection closed
$ sftp [2001:xxxx:xxxx:xxxx::2]
Connected to 2001:xxxx:xxxx:xxxx::2.
sftp>

    FWIW, this is explained in the manpage for my copy of sftp:
    Since some usage formats use colon characters to delimit host names from path names, IPv6 addresses must be enclosed in square brackets to avoid ambiguity.


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