B4CK.net Service Overview

The B4CK.net service allows for accessing selected internal TCP services over the Internet. The service employs proxy hosts to traverse firewalls and NAT (network address translation) routers.

B4CK architecture diagram

Reasons to choose B4CK.net:

Pricing Plans

Free Dedicated Clustered
Dedicated Virtual Servers 1 2
Port Lease Range 10000-29999 2-65535 3-65535
Port Lease Selection Random Configurable Configurable
Port Lease Renewal Every 30 days
Port Lease reCAPTCHA
Authentication Key Scope Per-port Configurable Configurable
Hosting Region EU Configurable Configurable
Network Traffic Limit 1 GB / port / month 1 TB / server / month 2 TB / cluster / month
Technical Support
Setup Contact us Contact us

Service Setup

  1. Download a free B4CK.net client for your target operating system:
    Download
  2. Lease a port on our server:
    You must agree before submitting.

    Your lease remains valid for 30 days. You can either renew your lease before the end of this period, or acquire a new lease.

  3. Execute the downloaded client: 

    Lease a port to see your command line.

Documentation

Communication between B4CK.net clients deployed in your internal network and our servers is always encrypted with TLS 1.3. Select the "TLS" radio button when requesting a new lease to also encrypt communication with the port leased on our B4CK.net servers. This requires connecting the service with a TLS-enabled client.

End-to-end encryption must, by definition, be performed between machines you control, and not on our servers. We recommend chaining the B4CK.net service with stunnel for end-to-end encryption.

Private servers are registered in custom subdomains of the b4ck.net domain. Alternatively, customers may use their own domains with our servers. TLS encryption for such domains needs to be configured on customers' internal servers, which also ensures end-to-end encryption.

B4CK.net is transparent to user protocols. We do fiddle with application protocols, such as HTTP.

In order to rewrite HTTP URLs, headers or cookies, we recommend chaining B4CK.net with a dedicated HTTP reverse proxy service, such as HAProxy or nginx.

Policies

The B4CK.net service may not be used to perform any illegal activities.

CUSTOMER ACCEPTS THE SERVICE “AS IS,” WITH NO REPRESENTATION OR WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR ANY IMPLIED WARRANTY ARISING FROM STATUTE, COURSE OF DEALING, COURSE OF PERFORMANCE, OR USAGE OF TRADE. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, VENDOR HAS NO OBLIGATION TO INDEMNIFY OR DEFEND CUSTOMER AGAINST CLAIMS RELATED TO INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS.

This website uses cookies. Cookies are small text files that can be used by websites to make a user’s experience more efficient. The law states that we can store cookies on your device if they are strictly necessary for the operation of this site. For all other types of cookies, we need your permission.

This site only uses Google reCAPTCHA cookies. The Google reCAPTCHA service ensures that port leases are performed by humans rather than robots. Consequently, the Google reCAPTCHA cookies are are essential to the basic functioning of this website.

We monitor the service to detect illegal and disruptive activities.

B4CK.net is owned and operated by:

Mobi-Com Polska Sp. z o.o.
ul. Bogatyńska 3/42, 01-461 Warszawa, POLAND
DUNS: 522246149
NIP (VATIN): PL5242404040
REGON (Business Registration Number): 017353774
KRS (National Court Register Number): 0000033207
Email us at s4l3s@b4ck.net.