Reverse SSH Tunnel
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Is it possible to do a reverse SSH tunnel to allow management of the firewall when it is behing a natted device? I can do openvpn and ipsec but this requires alot of IP managment and set up and all I want to be able to do is manage the firewall remotely. Again behind NAT.
https://openport.io/
I was looking at this as an option to access all the firewalls but I would need a way to enable reverse SSH tunnel on the pfSense.
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Found this: http://www.bsdnow.tv/tutorials/reverse-ssh
The site generates a public and private key but when I do this I get denied.
https://sshreach.me
Do I need to import something into pfsense or freebsd?
ssh -v -fN -R 9000:localhost:10290 root@fw1.sshreach.me
OpenSSH_7.2p2, OpenSSL 1.0.1s-freebsd 1 Mar 2016
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to fw1.sshreach.me [139.162.161.211] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: Fssh_key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_rsa type -1
debug1: Fssh_key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: Fssh_key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_dsa type -1
debug1: Fssh_key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Fssh_key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: Fssh_key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: Fssh_key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: Fssh_key_load_public: No such file or directory
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2 FreeBSD-20160310
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6
debug1: match: OpenSSH_6.6 pat OpenSSH_6.5*,OpenSSH_6.6* compat 0x14000000
debug1: Authenticating to fw1.sshreach.me:22 as 'root'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: ecdh-sha2-nistp256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit ="">compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit ="">compression: none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:nCeg0Bt8GiwhKOuEf4Q72pWxxjas EIbxm4yRhAqgkos
DNS lookup error: general failure
debug1: Host 'fw1.sshreach.me' is known and matches the ECDSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/id_rsa
debug1: Trying private key: /root/.ssh/id_dsa
debug1: Trying private key: /root/.ssh/id_ecdsa
debug1: Trying private key: /root/.ssh/id_ed25519
debug1: No more authentication methods to try.
Permission denied (publickey).</implicit ></implicit > -
For that sort of thing there isn't any IP management to do in OpenVPN… You just want to hit the GUI/ssh then just connect to the OpenVPN tunnel network IP address, no need to setup full site-to-site tunnels.
Only thing you'd have to manage is setting the tunnel network for the VPN, then check the openvpn status to see who lands where.
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But is it possible to do a reverse ssh tunnel to be able to manage the firewall rather than using openvpn?
