Network and reconnection

Two Preferences pages decide how linscp copes with the network: Network for incoming FTP connections, and Endurance (under Transfer) for broken transfers and lost sessions. Both apply to every site. Proxies and tunnels are set per site; see proxies, jump hosts and tunnels.

Network

Incoming FTP connections

These matter only for FTP in active mode, where the server connects back to your computer for each file or listing. See FTP and FTPS settings for the modes.

• Retrieve the external IP address from operating system uses your machine’s own address. This is right when there is no NAT between you and the server.
• Use the following external IP address sends the address you enter instead, for example your router’s public address, 192.0.2.10.
• Limit listening ports to restricts the local ports linscp opens to a range, so you can forward just that range on a firewall or router.

Tip

If directory listings hang in active mode, switch the site to passive mode first. It avoids both settings above.

Connections

The option to knock FTP port after a rejected SFTP connection helps when you are not sure what a server speaks. If the SFTP attempt is refused, linscp checks whether an FTP server answers and offers to switch.

Endurance

Resume and temporary file names

The group at the top decides when a transfer is written to a temporary file first and renamed once complete. If it breaks, the partial file can be resumed later and never replaces a good copy.

• All files: every transfer works this way.
• Files above: only files larger than the size in KB you set. This is the usual choice, because small files are quick to send again.
• Disable: write straight to the final name.

Some servers refuse the rename, or a web server might serve the partial file under its temporary name. In those cases, turn this off in a transfer settings preset that you use for that server. See transfer settings.

Automatic reconnect

When a connection drops, linscp can open it again by itself. Each case has its own check box and, where shown, a delay in seconds before the next attempt:

• if it breaks during transfer: the transfer resumes after reconnecting.
• if it breaks while idle: the panel stays usable without a prompt.
• if it breaks while inactive: covers sessions in background tabs, which are reconnected without asking.
• if it stalls: treats a connection that stops moving data for the given time as broken.

Keep reconnecting for sets how long linscp goes on trying. The lowest value means Forever.

Scripts run with linscp-cli use their own option reconnecttime setting instead of this page; see script commands.