SFTP client issues

Hello,

Can you please provide us with the results of the following commands to be able to better assist you with this issue.

sudo iptables -L

egrep -i '(permit|password|key)' /etc/ssh/sshd_config | grep -v '#'

iptables -L

Chain ufw-track-input (1 references)
target prot opt source destination

Chain ufw-track-output (1 references)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere ctstate NEW
ACCEPT udp -- anywhere anywhere ctstate NEW

Chain ufw-user-forward (1 references)
target prot opt source destination

Chain ufw-user-input (1 references)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp dpt:ssh
ACCEPT udp -- anywhere anywhere udp dpt:ssh
ACCEPT tcp -- anywhere anywhere tcp dpt:http
ACCEPT udp -- anywhere anywhere udp dpt:http
ACCEPT tcp -- anywhere anywhere tcp dpt:https
ACCEPT udp -- anywhere anywhere udp dpt:https

Chain ufw-user-limit (0 references)
target prot opt source destination
LOG all -- anywhere anywhere limit: avg 3/min burst 5 LOG level warning prefix "[UFW LIMIT BLOCK] "
REJECT all -- anywhere anywhere reject-with icmp-port-unreachable

Chain ufw-user-limit-accept (0 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere

Chain ufw-user-logging-forward (0 references)
target prot opt source destination

Chain ufw-user-logging-input (0 references)
target prot opt source destination

Chain ufw-user-logging-output (0 references)
target prot opt source destination

Chain ufw-user-output (1 references)
target prot opt source destination

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egrep -i '(permit|password|key)' /etc/ssh/sshd_config | grep -v '#'

HostKey /etc/ssh/sshhostrsakey HostKey /etc/ssh/sshhostdsakey
HostKey /etc/ssh/sshhostecdsakey HostKey /etc/ssh/sshhosted25519key
KeyRegenerationInterval 3600
ServerKeyBits 1024
PermitRootLogin yes
PubkeyAuthentication yes
PermitEmptyPasswords no
PasswordAuthentication no

Hi,

I see that you have "PubkeyAuthentication yes" set in your configuration. Can you please ensure that your Filezilla connection is configured to use the "key file" option with the correct public key specified?

https://wiki.filezilla-project.org/Howto

If that does not work, to further troubleshoot, you can temporarily set "PubkeyAuthentication yes" to "PubkeyAuthentication no" then restart SSH in Lish. If you're then able to connect with Filezilla we know that the issue lies somewhere within your key configuration. If you're still unable to connect then we can begin looking elsewhere.