It starts out with port 22, the default SSH port. The screenshot indicates port 443 but that is after you changed it as described below. You can confirm you can access your instance with MobaXterm using a regular SSH connection You use the assigned public IP at port 22 and your private key to login with user opc. Assign the public IP Confirm client connectivity I recommend using different accounts on a single compute instance if you want to allow different users to access it. You can create 2 compute instances though. When using the free tier, you only have a single public IP address. Now start creating the instance and wait until it is ready. In the below step you copy the previously saved public key. Why Oracle Linux? I was having some difficulties with the Ubuntu image and I suspect running an Oracle OS on Oracle Cloud might make things easier in the future. The private key is the thing you use to login from a client. This is the part which OCI needs to configure the instance. Next to saving the public and private key using the respective buttons, also save the top part starting with ssh-rsa. I prefer MobaXterm since next to generating keys, it is also a powerful SSH client, provides a Linux like environment and has a nice SSH tunnel manager.ĭo not supply a password. You can also use PuttyGen, keytool (a command line tool), KeyStore Explorer, etc. The below screenshots are from MobaXterm. There are several tools which allow you to do this. Prepare the SSH public and private keysįirst prepare an SSH key. Create an instanceĬreating an OCI instance is relatively easy but exposing it to the internet and configuring it to auto-update, require several steps. After the instance is created, there are also some measures to take to keep the instance updated and to make using it as SOCKS proxy from a remote source easier by assigning the SSH port to 443 (which is usually used for HTTPS traffic). When configuring the OCI instances, there are some challenges when you are not that experienced with cloud providers such as creating an SSH key pair and making the instance accessible from the internet. Mind that creating always free instances is only possible in your home region and that changing your home region after account creation is currently not possible. The example configuration is based on Oracle Linux 7 but will most likely be the same for RHEL and CentOS. I of course don’t want you to do anything illegal and blame me for it □ Create and configure an OCI compute instance Having a server in a different country as a proxy can also have benefits if certain services are only available from a certain country (a similar benefit as using a VPN or using Tor) or as a means to circumvent censorship.ĭo check what is allowed in your company, by your ISP and is legal within your country before using such techniques though. Also it allows you to access resources from a server outside of a company network which can have benefits for example if you want to check how a company hosted service looks to a customer from the outside. If you combine this with DNS over HTTPS, which is currently at least available in Firefox and Chrome, it will be more difficult for other parties to analyse your traffic. When you configure a browser to use that SOCKS proxy, your web traffic will be send through a secure channel (SSH tunnel) towards the OCI instance and the OCI instance will appear as your browsers client IP for remote sites you visit.Īn SSH server in combination with a locally running SOCKS proxy server allows you to browse the internet more securely from for example public Wifi hotspots by routing your internet traffic through a secure channel via a remote server. Although there are some limitations on CPU, disk, network resources, these instances are ideal to use as a remote SSH server and with a little effort a connection target for a locally running SOCKS proxy server. In contrast to Azure and Amazon, these include compute instances which remain ‘forever’ free to use. Oracle provides several services as ‘always free’.
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