I'm attempting to allow an SFTP connection to a preconfigured Linode. It's running Ubuntu 12.04. I was entirely Linux green until six weeks ago, but I've been learning as I go.
I left the station the Linode was setup on, and learned the iptables were configured to only allow connections from specific IPs.
I still have Linode Shell access, but I'm using a Verizon Jetpack and my IP is changing pretty regularly. I also don't want to create a security hole, and it feels like I'm playing with fire here.
I attempted a:
sudo iptables -A INPUT -p tcp --dport ssh -j ACCEPT
to try and allow SSH/SFTP access from all IPS but, I still get a timeout error in Filezilla using the linode IP and same login info as I did before.
I'm unsure the best course of action, as I'd prefer to tread lightly in this area.