Opening direct-tcpip channel failed. invalid originator port

[sergioescudero]

Hi there,

one jump in my infra was updated to Openssh 8.

Since the upgrade, we are getting this error when we tried to upload a file:

[error] net.schmizz.concurrent.Promise <<chan#0 / open>> woke to: Opening `direct-tcpip` channel failed: open failed

Checking the jump log we have the following error:

error: server_request_direct_tcpip: invalid originator port

The line in OpenSSH that is throwing the error is

if (originator_port > 0xFFFF) {
                        error("%s: invalid originator port", __func__);
                        *reason = SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED;
                        goto out;
                }

The port that is defined for creating the connection is

sshj/src/main/java/net/schmizz/sshj/connection/channel/direct/DirectConnection.java

Line 23 in d10a33e

public static final int LOCALPORT = 65536;

The port used is 65536.

Is there any way to use another port?

Thank you.

[moritz31]

I face the same issue!
@sergioescudero did you find a way around this issue?
Seems like an easy fix to change the LOCALPORT to something accepted?