Sold by: Cloud SOE
Deployed on AWS
AWS Free Tier
This is a repackaged open source software product wherein additional charges apply for the pre-configured fail2ban SSH and SIP brute-force protection, the Kamailio file log for CloudWatch shipping, Amazon CloudWatch log/metric shipping, AWS Systems Manager integration, security hardening, and vendor support.
Overview
Deploy a production ready Kamailio SIP server on AWS in minutes. Built for VoIP engineers, ITSPs and platform teams who need carrier grade SIP routing, registration and load balancing in front of media servers such as Asterisk or FreePBX, without spending days compiling modules, tuning the database backend and hardening the host.
Why Kamailio, and why this image
Kamailio (formerly OpenSER) routes thousands of call setups per second on modest hardware. It is the standard open source choice for SIP registrars, proxy layers and least cost routing front ends. This image removes the two barriers that slow real deployments: module and database assembly, and the security work needed before a SIP port can safely face the internet. SIP services are scanned within minutes of coming online; this image assumes that from the start.
What you get out of the box
- Latest stable Kamailio from the official project repository, with the commonly needed modules enabled: registrar, usrloc, dispatcher, dialog, TLS, WebSocket, database connectivity
- WebSocket support staged for WebRTC gateway scenarios
- Anti fraud and abuse defaults: fail2ban rules for SIP scanners, pike module rate limiting, and a firewall stance that exposes only the ports you choose
- kamctl and kamcmd management tooling configured and documented
Common use cases
- SIP load balancer: distribute registrations and calls across an Asterisk or FreePBX cluster using the dispatcher module
- Registrar and proxy layer: terminate registrations at the edge and keep media servers private
- ITSP core: routing, authentication and rate limiting for a service provider platform
- WebRTC gateway front end: WebSocket SIP toward browsers, standard SIP toward your core
- Geographic redundancy: stateless proxy design suits multi region active active layouts
Sizing guidance
Kamailio is CPU light for signalling. Evaluation and small deployments: t3.small. Production proxy or registrar: t3.medium or t3.2xlarge. High registration churn or large routing tables benefit from memory, not cores.
Kamailio® is a registered trademark of its project trademark holder. This product is independently packaged and maintained and is not affiliated with or endorsed by the Kamailio project.
Highlights
- Kamailio installed from the official upstream repository, enabled and running at first boot with its configuration at /etc/kamailio/kamailio.cfg.
- fail2ban pre-configured and active with sshd and kamailio jails (escalating bans: 5 failures in 10 minutes = 1 hour, up to 1 week), a ready-made Kamailio auth-failure filter, key-only SSH, root login disabled, no baked-in secrets.
- Amazon CloudWatch agent ships /var/log/kamailio.log, fail2ban.log, syslog and auth.log and publishes host metrics under CloudSOE/kamailio; Amazon SSM Agent for Session Manager; vendor support from CloudSOE.
Details
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Delivery method
Delivery option
64-bit (x86) Amazon Machine Image (AMI)
Latest version
Operating system
Ubuntu 26.04
Deployed on AWS
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Features and programs
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Pricing
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 |
|---|---|
t3.large Recommended | $0.03 |
t3.micro | $0.03 |
t2.micro | $0.03 |
m6id.8xlarge | $0.03 |
m5.4xlarge | $0.03 |
m6id.large | $0.03 |
r6i.16xlarge | $0.03 |
m6a.metal | $0.03 |
m6idn.2xlarge | $0.03 |
m6i.xlarge | $0.03 |
Dimensions summary
You pay by the hour for the EC2 instance type you choose to run the Kamailio SIP server image. The software price is the same across instances; your hourly rate changes with the instance size and family you pick. Options range from small burstable types like t3.nano and t2.micro up to large compute- and memory-optimized instances, including bare-metal types. General-purpose (m-series) and memory-optimized (r-series) families let you match CPU and memory to your SIP routing load. Billing flows through your AWS account, so you scale by selecting a larger or smaller instance as needs change.
Top-of-mind questions for buyers
You get a pre-built image with the latest stable Kamailio SIP server on a hardened Ubuntu base. It includes fail2ban tuned against SIP abuse using journald-based detection. The image is set up for SIP proxies, registrars, load balancers and session border control.
Hourly charges apply to running instance-hours. When you stop an instance, the software charge stops accruing. You pay again once it runs. Underlying AWS storage fees may still apply while the instance is stopped, since those are separate from the software licence.
You scale by choosing a larger or smaller instance type. Moving from a t-series burstable type to an m-series or r-series instance raises the hourly rate. Memory-heavy routing favors r-series types; balanced CPU and memory favors m-series. Billing adjusts automatically to the instance you run.
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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
Latest security patches and updates for the operating system and application.
Additional details
Usage instructions
Quick Start:
- SSH in as 'ubuntu'; configuration lives in /etc/kamailio/kamailio.cfg (tools: kamctl, kamcmd).
- fail2ban is active (sshd + kamailio jails) - whitelist your admin IP first: sudo fail2ban-client set sshd addignoreip <your-ip>.
- See /etc/motd on the instance for how to arm SIP auth-failure banning.
- Monitoring: attach an IAM instance role with the AWS-managed policies CloudWatchAgentServerPolicy and AmazonSSMManagedInstanceCore to enable CloudWatch logs/metrics (namespace CloudSOE/kamailio) and Session Manager. No AWS credentials are stored on the image.
Support
Vendor support
Vendor support for this AMI is provided by CloudSOE. To reach the support team, email support@cloudsoe.com with a description of your issue.
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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