Sold by: Salient Engineering
Deployed on AWS
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Multi-Port Forward Server that listens on multiple user-defined ports. Inbound TCP or UDP traffic can be routed to internal or external hosts, and the destination ports can be changed.
5
Overview
The Multi-Port Forward Server, also known as a port address translation server (PAT), is a virtual appliance designed to efficiently manage inbound UDP and TCP traffic on user-defined ports.
This server forwards the traffic in real-time to either an internal private IP address or an external IP address (NAT), and it can be configured to redirect incoming traffic to user-defined destination ports. With the ability to specify multiple listening ports and forward connections to multiple destinations, this server is ideal for enterprise deployments where it acts as a gateway, allowing the whitelisting of client or third-party firewalls.
The Multi-Port Forward Server allows you to efficiently manage and redirect inbound traffic, making it a valuable turn-key solution to your AWS environment.
Highlights
- Multi-port address translation for internal resources requiring external accessibility.
- Redirects both TCP and UDP traffic to internal or external servers.
- Multiple listening ports can be configured and traffic can be directed to multiple destination hosts.
Details
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Delivery method
Delivery option
64-bit (x86) Amazon Machine Image (AMI)
Latest version
Operating system
AmazonLinux Amazon Linux 2
Deployed on AWS
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AWS Marketplace now accepts line of credit payments through the PNC Vendor Finance program. This program is available to select AWS customers in the US, excluding NV, NC, ND, TN, & VT.
Pricing
Free trial
Try this product free for 5 days according to the free trial terms set by the vendor. Usage-based pricing is in effect for usage beyond the free trial terms. Your free trial gets automatically converted to a paid subscription when the trial ends, but may be canceled any time before that.
Pricing is based on actual usage, with charges varying according to how much you consume. Subscriptions have no end date and may be canceled any time.
Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator to estimate your infrastructure costs.
If you are an AWS Free Tier customer with a free plan, you are eligible to subscribe to this offer. You can use free credits to cover the cost of eligible AWS infrastructure. See AWS Free Tier for more details. If you created an AWS account before July 15th, 2025, and qualify for the Legacy AWS Free Tier, Amazon EC2 charges for Micro instances are free for up to 750 hours per month. See Legacy AWS Free Tier for more details.
Dimension | Cost/hour |
|---|---|
t3a.medium Recommended | $0.05 |
t2.micro | $0.02 |
i3en.24xlarge | $0.05 |
i3en.large | $0.05 |
m5dn.12xlarge | $0.05 |
g4dn.4xlarge | $0.05 |
c6in.4xlarge | $0.05 |
m5dn.24xlarge | $0.05 |
d3en.4xlarge | $0.05 |
r6idn.32xlarge | $0.05 |
Dimensions summary
You pay by the hour for the EC2 instance type you run the Multi-Port Forward Server on. There is no fixed license fee or upfront commitment. Pricing scales with the instance you choose. Options span many families, including general-purpose, compute-optimized, memory-optimized, storage-optimized, GPU, and high-memory instances. Sizes range from small instances like t2.micro and t3a.small up to large multi-core and bare-metal options like c6in.metal and x2iedn.metal. Each hour you run an instance adds to your bill. Larger or more specialized instances carry a higher hourly rate. You select the instance that fits your traffic and performance needs.
Top-of-mind questions for buyers
The hourly rate covers running the Multi-Port Forward Server software on the EC2 instance type you pick. You also pay for the underlying EC2 compute separately through AWS. The vendor notes a t3.medium handles most production workloads, so you can start small.
Hourly software charges accrue only while the instance runs. A fully stopped instance stops adding software charges. Stopped instances may still incur AWS storage fees for attached volumes, but the software meters running hours only. You control cost by stopping the server when idle.
You pay the hourly rate tied to whichever instance type runs the software. Switching to a different instance changes your hourly rate going forward. Larger or more specialized instances carry higher hourly rates. The change takes effect when you launch the new instance, not automatically.
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Refunds issued on a case-by-case basis.
Legal
Vendor terms and conditions
Upon subscribing to this product, you must acknowledge and agree to the terms and conditions outlined in the vendor's End User License Agreement (EULA) .
Content disclaimer
Vendors are responsible for their product descriptions and other product content. AWS does not warrant that vendors' product descriptions or other product content are accurate, complete, reliable, current, or error-free.
Delivery details
64-bit (x86) Amazon Machine Image (AMI)
Amazon Machine Image (AMI)
An AMI is a virtual image that provides the information required to launch an instance. Amazon EC2 (Elastic Compute Cloud) instances are virtual servers on which you can run your applications and workloads, offering varying combinations of CPU, memory, storage, and networking resources. You can launch as many instances from as many different AMIs as you need.
Version release notes
Updated appliance. Production-ready release.
Additional details
Usage instructions
- Edit the /etc/multiportforward/multiportforward.config file using vim, or nano.
- Edit the JSON entries to reflect your desired port forwarding configuration; multiple entries can be added.
- Enter a custom key name for your entry (sshbastion, rdpbastion, etc.); this is can be set to any alphanumeric value, do not use spaces.
- Update the source port (SPORT), this is the port that will be receiving traffic.
- Update the destination host (DHOST) IP address. Typically, this would be a private IP address within your VPC.
- Update the destination port (DPORT) for the traffic to target.
- Update the protocol (PROTOCOL) to either be udp or tcp.
- Reboot the system.
- Ensure that the Multi-Port Forward Server appliance's Security Group permits inbound traffic to the source ports.
- Ensure that source and destination checks are disabled for the Multi-Port Forward Server instance.
Resources
Vendor resources
Support
Vendor support
Please email us if you experience any issues or have deployment questions: support@salientengineering.com
AWS infrastructure support
AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.
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Functionality
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AI generated from product descriptions
Multi-Port Traffic Forwarding
Listens on multiple user-defined ports and forwards inbound TCP or UDP traffic to internal or external hosts with configurable destination ports
Port Address Translation
Implements port address translation (PAT) functionality to redirect incoming traffic from multiple listening ports to multiple destination hosts
Protocol Support
Supports both TCP and UDP protocol traffic forwarding with real-time routing capabilities
Dynamic Port Configuration
Allows configuration of multiple listening ports with the ability to change destination ports for each forwarded connection
Internal and External Routing
Routes traffic to both internal private IP addresses and external IP addresses with NAT capabilities for enterprise gateway deployments
Static IP Proxy Service
Route inbound and outbound traffic through load-balanced pairs of static IP addresses via proxied connections for third-party IP whitelisting and secure access to protected resources.
Protocol Support
HTTP and SOCKS5 proxy protocols available with SSL support and custom domain configuration.
High Availability Infrastructure
Health monitoring, load-balancing, and automated failover mechanisms across proxy cluster to ensure continuous service availability.
Multi-Region Deployment
Proxy infrastructure deployed across 8 AWS regions with ability to select specific regional endpoints for optimized latency.
Real-Time Monitoring and Analytics
Dashboard-based tracking of requests and usage metrics with real-time visibility into traffic patterns and account activity.
Firewall and Threat Prevention
Stateful packet inspection with GeoIP blocking, anti-spoofing, IDS/IPS, deep packet inspection, and application detection and blocking capabilities
VPN Protocols and Connectivity
Support for IPsec, OpenVPN, and WireGuard protocols with site-to-site and remote access VPN, high-availability tunnels, and authentication integration
Routing and Traffic Management
Policy-based routing with IPv4/IPv6 support, static routing, load balancing, reverse proxy, and high availability for TCP, HTTP, and HTTPS applications
Network Services
DNS, DHCP, dynamic DNS, DNS filtering, and PPPoE server capabilities for comprehensive network service delivery
Centralized Management and Visibility
Netgate Nexus platform providing multi-instance visibility, unified policy management, and scalable administration across multiple VPCs, regions, and hybrid on-premises deployments
Standard contract
No
Customer reviews
Pete
Excellent customer support
Reviewed on Oct 07, 2021
Review from a verified AWS customer
Thank you Cornel!
I was struggling with the ability to pass UDP packets to a server inside my firewall - nothing seemed to help as UDP cannot be passed over SSH.
Cornel answered my question promptly with a solution that worked quite well - based around the little known but quite useful linux command "socat".
The help is very much appreciated!
BA
SUCCESS AT LAST!
Reviewed on Mar 25, 2021
Review from a verified AWS customer
So I had a review on here earlier so this is sort of an update.
When I first tried this it didn't seem to work at all but I may have been wrong all along. It also didn't support UDP so it wasn't what I was looking for. But after contacting the creator I got a reply a little while later and he was more than willing to help me out. Now I informed him it wasn't what I was looking for since there was no UDP support and he told me it was coming in a future update. Sure enough a couple weeks later I got an email letting me know it was available and asking me to try it out. While it took a little while to find the time, I finally did and still had issues. Again the creator reached out to help me, and after 2 different troubleshooting sessions for a total 2.5 hours we got it working.
The creator even did research on my setup and worked with me over email between sessions until we got right. The silly thing is the fix had nothing to do with my hardware but with AWS.
Anyway great product, easy to use, and great support. I highly recommend this and if you run into issues, even silly ones, contact the creator for some awesome support!