[SOLVED]Unlike tnftp6 from AUR, tnftp from extra behaves mysteriously

Oleg_NYC · 2023-08-11 18:56:35

Hi. There is a difference in behavior between tnftp installed from the extra repository and tnftp6 installed from the AUR, whose cause I find mysterious. Unlike tnftp6, tnftp can only connect to LAN ftp servers whose ip starts with 192.168* or 127*, but can't connect to Internet-based ftp servers such as ftp.freebsd.org. For example, the command

tnftp -a ftp.freebsd.org

produces the message

tnftp: Can't connect to `96.47.72.116:21': Network is unreachable

. But if I uninstall tnftp and install tnftp6 from the AUR, then I'll have no problem accessing LAN-based and Internet-based ftp servers with it. Why is that? The version of tnftp and tnftp6 is the same. tnftp6 supports ipv6, but it's irrelevant in this case.

Last edited by Oleg_NYC (2023-08-12 13:04:25)

seth · 2023-08-11 20:17:53

ip a; ip r; ip r get 96.47.72.116

Can you "tnftp -6 -a ftp.freebsd.org"?

Oleg_NYC · 2023-08-11 20:52:24

If I execute that command with tnftp6, it produces the message "Network is unreachable", but the -4 option allows me to connect to the server. With tnftp, neither the -4 nor the -6 option allows me to connect to the server.

seth · 2023-08-11 21:00:41

AUR has "--with-socks=no"
You could try to build the repo package w/ that difference, https://wiki.archlinux.org/title/Arch_b … ILD_source

Oleg_NYC · 2023-08-11 21:23:02

So, there is a possibility that if I use the --with-socks=no option to rebuild tnftp from the extra repository, I will be able to connect to ftp servers that are not on my LAN? Yes, I might rebuild this, but if --with-socks=yes (I don't even understand the meaning of this option) removes a lot of functionality from the "extra" tnftp package, why was it built like that in the first place?

seth · 2023-08-11 21:38:40

It doesn't. https://www.inet.no/dante/

systemctl status sockd

I found this interesting comment:
https://slackbuilds.org/repository/14.2/network/tnftp/

It's not possible to build a single tnftp binary with both IPv6 andSOCKS5 support.

It's from 2020, but you could try

--disable-ipv6

and keep socks.
No idea whether the tnftp in the repos is maybe misconfigured itr (trying to use both)

Oleg_NYC · 2023-08-11 22:57:52

You mentioned sockd. sockd.service is inactive. The official PKGBUILD for the "extra" tnftp sources has both ipv6 and socks enabled, so I kept socks enabled and disabled ipv6. After building it, I was unable to connect to ftp servers with internet ips. I re-enabled ipv6 and disabled socks and was able to connect to servers with Internet ips. Then I disabled both ipv6 and socks and was able to connect to servers with internet ips. I always used the -4 option. What do these results mean? Does it mean there is something wrong with the official PKGBUILD or does it mean there is something wrong on my end?

seth · 2023-08-12 06:11:02

idk what the idea behing the tnftp package is, but you'll probably *need* a socks tunnel with that configuration, what makes it probably useless to connect some random public ftp server.

You can file a bug against the package to inquire the intent. I can confirm that it won't work the way you desire w/ its current config.

If you're just looking for an cli ftp, there's ftp in inetutils.

Oleg_NYC · 2023-08-12 13:03:52

Thanks for the info. I opened a bug report and will mark this topic as solved.

Arch Linux

#1 2023-08-11 18:56:35

[SOLVED]Unlike tnftp6 from AUR, tnftp from extra behaves mysteriously

#2 2023-08-11 20:17:53

Re: [SOLVED]Unlike tnftp6 from AUR, tnftp from extra behaves mysteriously

#3 2023-08-11 20:52:24

Re: [SOLVED]Unlike tnftp6 from AUR, tnftp from extra behaves mysteriously

#4 2023-08-11 21:00:41

Re: [SOLVED]Unlike tnftp6 from AUR, tnftp from extra behaves mysteriously

#5 2023-08-11 21:23:02

Re: [SOLVED]Unlike tnftp6 from AUR, tnftp from extra behaves mysteriously

#6 2023-08-11 21:38:40

Re: [SOLVED]Unlike tnftp6 from AUR, tnftp from extra behaves mysteriously

#7 2023-08-11 22:57:52

Re: [SOLVED]Unlike tnftp6 from AUR, tnftp from extra behaves mysteriously

#8 2023-08-12 06:11:02

Re: [SOLVED]Unlike tnftp6 from AUR, tnftp from extra behaves mysteriously

#9 2023-08-12 13:03:52

Re: [SOLVED]Unlike tnftp6 from AUR, tnftp from extra behaves mysteriously

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