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is-port-500-open
x402
is-port-500-open is a paid API for AI agents from ip.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).
Checks whether TCP port 500 (IKE/IPsec) is open, closed, or filtered on a given host by probing from Cloudflare's edge network
Price / call$0.01
Success—
StatusUnknown
How this service works
Is TCP port 500 (IKE) open on a host? Attempts a connection from Cloudflare's edge and reports open/closed/filtered with the connect time; Cloudflare-fronted hosts are reported as inconclusive because their edge answers for them. Exposure checks for IKE without running a scanner. $0.01 per check.
Output
Returns whether TCP port 500 is open, closed, or filtered on the target host, along with the connection time in milliseconds. If the host is fronted by Cloudflare, the result is flagged as inconclusive because Cloudflare's edge responds on behalf of the origin, masking the true port state.
Example use cases
VPN exposure audit for a server
“I need to know whether port 500 is open on vpn-gateway.mycompany.com — can you probe it from the outside and tell me if IKE is exposed?”
Pre-deployment IKE accessibility check
“Before we go live, can you verify that TCP port 500 is reachable on 198.51.100.10 so I can confirm our IPsec endpoint is properly accessible?”
Security sweep for unexpected IKE exposure
“Can you check if port 500 is open on 192.0.2.88? We suspect IKE might be inadvertently exposed and want to confirm without triggering any alarms.”
Technical details
Endpoint
GEThttps://ip.intel.rallylive.ca/ip/port/500?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, passive check of whether TCP port 500 (IKE/IPsec) is accessible on a host from an external vantage point, without deploying a network scanner. Ideal for security audits, pre-deployment checks, and confirming VPN gateway exposure. Note the Cloudflare-fronted inconclusiveness limitation.
Side effects
- Host is Cloudflare-fronted — result marked inconclusive rather than open/closed
- Network filtering or firewall drops the probe silently — reported as filtered
- Hostname does not resolve — DNS failure returned
- Connection timeout — may be reported as filtered
- Invalid or unreachable IP — error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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