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As I understand this, firewalls (assuming default settings) deny all incoming traffic that has no prior corresponding outgoing traffic.

Based on Reversing an ssh connection and SSH Tunneling Made Easy, reverse SSH tunneling can be used to get around pesky firewall restrictions.

I would like to execute shell commands on a remote machine. The remote machine has its own firewall and is behind an additional firewall (router). It has an IP address like 192.168.1.126 (or something similar). I am not behind a firewall and I know the remote machine's IP address as seen from the Internet (not the 192.168.1.126 address). Additionally, I can ask someone to execute ssh (something) as root on the remote machine first.

Could anyone explain me, step by step, how reverse SSH tunneling works to get around the firewalls (local and remote machines' firewalls and the additional firewall between them)?
What is the role of the switches (-R, -f, -L, -N)?

As I understand this, firewalls (assuming default settings) deny all incoming traffic that has no prior corresponding outgoing traffic.

Based on Reversing an ssh connection and SSH Tunneling Made Easy, reverse SSH tunneling can be used to get around pesky firewall restrictions.

I would like to execute shell commands on a remote machine. The remote machine has its own firewall and is behind an additional firewall (router). It has an IP address like 192.168.1.126 (or something similar). I am not behind a firewall and I know the remote machine's IP address as seen from the Internet (not the 192.168.1.126 address). Additionally, I can ask someone to execute ssh (something) as root on the remote machine first.

Could anyone explain me, step by step, how reverse SSH tunneling works to get around the firewalls (local and remote machines' firewalls and the additional firewall between them)?

What is the role of the switches (-R, -f, -L, -N)?

As I understand this, firewalls (assuming default settings) deny all incoming traffic that has no prior corresponding outgoing traffic.

Based on Reversing an ssh connection and SSH Tunneling Made Easy, reverse SSH tunneling can be used to get around pesky firewall restrictions.

I would like to execute shell commands on a remote machine. The remote machine has its own firewall and is behind an additional firewall (router). It has an IP address like 192.168.1.126 (or something similar). I am not behind a firewall and I know the remote machine's IP address as seen from the Internet (not the 192.168.... address). Additionally, I can ask someone to execute ssh (something) as root on the remote machine first.

Could anyone explain me, step by step, how reverse SSH tunneling works to get around the firewalls (local and remote machines' firewalls and the additional firewall between them)?
What is the role of the switches (-R, -f, -L, -N)?

As I understand this, firewalls (assuming default settings) deny all incoming traffic that has no prior corresponding outgoing traffic.

Based on Reversing an ssh connection and SSH Tunneling Made Easy, reverse SSH tunneling can be used to get around pesky firewall restrictions.

I would like to execute shell commands on a remote machine. The remote machine has its own firewall and is behind an additional firewall (router). It has an IP address like 192.168.1.126 (or something similar). I am not behind a firewall and I know the remote machine's IP address as seen from the Internet (not the 192.168.1.126 address). Additionally, I can ask someone to execute ssh (something) as root on the remote machine first.

Could anyone explain me, step by step, how reverse SSH tunneling works to get around the firewalls (local and remote machines' firewalls and the additional firewall between them)?
What is the role of the switches (-R, -f, -L, -N)?

As I understand this, firewalls (assuming default settings) deny all incoming traffic that has no prior corresponding outgoing traffic.

Based on Reversing an ssh connection and SSH Tunneling Made Easy, reverse SSH tunneling can be used to get around pesky firewall restrictions.

I would like to execute shell commands on a remote machine. The remote machine has its own firewall and is behind an additional firewall (router). It has an IP address like 192.168.1.126 (or something similar). I am not behind a firewall and I know the remote machine's IP address as seen from the Internet (not the 192.168.... address). Additionally, I can ask someone to execute ssh (something) as root on the remote machine first.

Could anyone explain me, step by step, how reverse SSH tunneling works to get around the firewalls (local and remote machines' firewalls and the additional firewall between them)?
What is the role of the switches (-R, -f, -L, -N)?

As I understand this, firewalls (assuming default settings) deny all incoming traffic that has no prior corresponding outgoing traffic.

Based on Reversing an ssh connection and SSH Tunneling Made Easy, reverse SSH tunneling can be used to get around pesky firewall restrictions.

I would like to execute shell commands on a remote machine. The remote machine has its own firewall and is behind an additional firewall (router). It has an IP address like 192.168.1.126 (or something similar). I am not behind a firewall and I know the remote machine's IP address as seen from the Internet (not the 192.168.... address). Additionally, I can ask someone to execute ssh (something) as root on the remote machine first.

Could anyone explain me, step by step, how reverse SSH tunneling works to get around the firewalls (local and remote machines' firewalls and the additional firewall between them)?
What is the role of the switches (-R, -f, -L, -N)?