This guide provides detailed steps for setting up DNS records, configuring a DNS tunneling server and client, and setting up a browser for secure proxy connections.
- Bypassing Network Restrictions: iodine excels in environments with strict network restrictions. It utilizes DNS queries, which are typically allowed through firewalls, to tunnel data where traditional methods like VPNs might be blocked.
- Efficient for Limited Bandwidth: Ideal for situations with bandwidth limitations, iodine requires less bandwidth compared to standard VPNs, making it a practical choice for networks with restricted data flow.
- Customizability and Open Source: As an open-source tool, iodine offers extensive customization options. Users with specific technical needs or those interested in a hands-on approach to network tunneling can tailor iodine to their requirements.
- A domain (e.g.,
mydomain.com
) - Access to the domain's DNS settings
- A server with root access
- A Linux client machine
- Basic understanding of DNS records and SSH
- Add DNS Records:
-
Navigate to your domain's DNS settings.
-
Add the following records:
t1 IN NS t1ns.mydomain.com. # Note the final dot t1ns IN A YOUR_SERVER_IP
-
t1
is a subdomain used for the DNS tunneling service. -
t1ns
points to the IP address of your server (YOUR_SERVER_IP
).
-
- Use of CNAME Records: For aliases or subdomains that point to the same server, consider using CNAME records for easier management.
- Security: Ensure all records are correctly configured to prevent DNS spoofing or hijacking.
-
Install
iodine
:-
Connect to your server via SSH.
-
Install the
iodine
package:sudo apt install iodine
-
-
Configure and Run
iodine
:-
Start the
iodine
server with a secure password and an appropriate IP range:sudo iodined -f -c -P YOUR_PASSWORD 10.0.1.1 t1.mydomain.com &
-
Replace
YOUR_PASSWORD
with a strong password. -
10.0.1.1
is the IP range for the DNS tunnel.
-
- Security: Use a strong, unique password for
iodine
. - Logging: Enable logging for
iodine
to monitor connections and troubleshoot issues.
-
Install
iodine
:-
On your Linux client, install
iodine
:sudo apt install iodine
-
-
Establish a Connection:
-
Connect to the
iodine
server:sudo iodine -f -P YOUR_PASSWORD t1.mydomain.com &
-
Forward port 9999 via SSH for a proxy connection:
ssh user@10.0.1.1 -D 9999
-
- Network Security: Ensure your client's network is secure when establishing the tunnel.
- Password Protection: Use the same strong password as set on the server.
- Set Up Proxy:
- Configure your browser to use a SOCKS5 proxy.
- Set the proxy address to
localhost
and the port to9999
.
- Proxy Verification: Verify the proxy settings to ensure traffic is correctly routed through the tunnel.
- Regular Updates: Keep your browser updated to the latest version for security and compatibility.