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  • ftp service

    From Alan Ianson@1:153/757.2 to All on Sat Mar 14 16:34:26 2020
    Hello All,

    I have been having trouble getting the ftp service working here. I discovered that I could log into the ftp server with an ftp client and issue the passive command to turn off passive mode and it would work well for me then.

    So I added the BBS machine to the DMZ so all ports would be open to the outside and then file transfers from the BBS web page or FTP server work fine.

    I just wonder if there is a range of ports I should open rather than use the DMZ?

    Thanks for any input.

    --- BBBS/Li6 v4.10 Toy-4
    * Origin: The Rusty MailBox - Penticton, BC Canada (1:153/757.2)
  • From Lee Green@1:102/401 to Alan Ianson on Sat Mar 14 21:33:00 2020
    Hello All,

    I have been having trouble getting the ftp service working here. I
    discovered
    that I could log into the ftp server with an ftp client and issue the
    passive
    command to turn off passive mode and it would work well for me then.

    So I added the BBS machine to the DMZ so all ports would be open to the
    outside
    and then file transfers from the BBS web page or FTP server work fine.

    I just wonder if there is a range of ports I should open rather than use the DMZ?

    The unsecure ftp ports are 20 and 21, secure ports are 989 and 990.

    You should also do a search for FTP Ephemeral Ports which I believe
    passive uses which would be a range of ports that are dynamic..

    The Internet Assigned Numbers Authority (IANA) suggests the range 49152
    to 65535 (215+214 to 216-1) for dynamic or private ports.[1]

    Many Linux kernels use the port range 32768 to 61000.[note 2] FreeBSD
    has used the IANA port range since release 4.6. Previous versions,
    including the Berkeley Software Distribution (BSD), use ports 1024 to
    5000 as ephemeral ports.[2][3]

    Microsoft Windows operating systems through XP use the range 1025-5000
    as ephemeral ports by default.[4] Windows Vista, Windows 7, and Server
    2008 use the IANA range by default.[5] Windows Server 2003 uses the
    range 1025-5000 by default, until Microsoft security update MS08-037
    from 2008 is installed, after which it uses the IANA range by
    default.[6] Windows Server 2008 with Exchange Server 2007 installed has
    a default port range of 1025-60000.[7] In addition to the default range,
    all versions of Windows since Windows 2000 have the option of specifying
    a custom range anywhere within 1025-65535.

    Thanks for any input.

    --- BBBS/Li6 v4.10 Toy-4
    * Origin: The Rusty MailBox - Penticton, BC Canada (1:153/757.2)
    --- Platinum Xpress/Win/WINServer v7.0
    * Origin: TECHWARE BBS - Since 1995 - www.techware.dynip.com/ (1:102/401)
  • From Alan Ianson@1:153/757.2 to Lee Green on Sun Mar 15 17:36:50 2020
    Hello Lee,

    The unsecure ftp ports are 20 and 21, secure ports are 989 and 990.

    I knew about 20 and 21 but have never heard of or used 989 and 990.

    You should also do a search for FTP Ephemeral Ports which I believe
    passive uses which would be a range of ports that are dynamic..

    Very interesting, I'll have a look.

    The Internet Assigned Numbers Authority (IANA) suggests the range 49152
    to 65535 (215+214 to 216-1) for dynamic or private ports.[1]

    I see different port ranges used at different times. Leaves me wondering what range of ports BBBS is using. :)

    Thanks for the info.

    --- BBBS/Li6 v4.10 Toy-4
    * Origin: The Rusty MailBox - Penticton, BC Canada (1:153/757.2)