• ftp service

    From Alan Ianson@1:153/757.2 to All on Saturday, March 14, 2020 16:27:26
    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 Alan Ianson@1:153/757.2 to LEE GREEN on Sunday, March 15, 2020 17:29:50
    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)