An Alibaba Cloud proxy IP can be a forward proxy on an ECS instance, a reverse proxy on SLB/ALB, or a NAT gateway with a static Elastic IP. The right choice depends on traffic direction, security requirements, and whether you need a stable IP for third-party allowlists. CnCloud, an authorized multi-cloud reseller, can help with configuration and fast top-up for these workloads.
Choosing the Right Proxy Type
Use the table below to match a proxy IP use case to the most suitable Alibaba Cloud service. A forward proxy handles outbound traffic, a reverse proxy distributes inbound requests, and a NAT gateway provides a stable egress IPv4 without running proxy software.
| Scenario | Proxy type | Typical Alibaba Cloud service | Best for |
|---|---|---|---|
| Outbound API calls from multiple instances | Forward proxy | ECS with Squid or 3proxy | IP allowlisting, web scraping, egress filtering |
| Inbound HTTP/HTTPS traffic | Reverse proxy | SLB/ALB or CDN | SSL termination, WAF, load balancing |
| Stable outbound IPv4 for a VPC | NAT gateway | VPC NAT with Elastic IP | Hiding instance IPs, IP reputation management |
Configuration and Security Checks
After selecting a proxy model, restrict the security group to only the source IPs that should reach the proxy. For a forward proxy on ECS, disable CONNECT on unneeded ports, enable VPC flow logs, and test egress with curl from an allowed host. For a reverse proxy, attach an HTTPS certificate and set origin health checks. A misconfigured proxy can become an open relay and cause unexpected bandwidth charges, so rotate credentials and monitor outbound traffic.
Reseller Billing and Crediting for Proxy IP
Proxy IP deployments usually consume several Alibaba Cloud International resources: ECS, NAT gateway, SLB/ALB, and bandwidth. Reseller top-up speed therefore affects how quickly you can resize or enable a proxy. USDT top-up is credited instantly, while corporate or bank transfer usually takes about 1-2 business days. Through right-sizing, architecture optimization, and reseller discounts, some teams save up to ~30% on their cloud bill without reducing proxy IP capacity.
Choose the proxy IP model based on traffic direction, tighten security groups before exposing the endpoint, and align payment with the crediting time you need. Test from the actual client IP before cutting over, and monitor bandwidth for the first billing cycle.