Session Report
Summary:
Test run at: 2020-08-24 21:13:48 GMT
Client Prefix (v4): 217.61.20.x/24
Client AS (v4): 199883 (ARUBACLOUDLTD-ASN)
IPv4 Probes: 75
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
blocked |
| Routable |
blocked |
| Largest spoofable neighbor prefix length |
none |
| Spoof status key |
|---|
| received | Spoofed packet was received. | ✔ | Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it. |
| rewritten | Spoofed packet was received, but the source address was changed en route. |
| blocked | Spoofed packet was not received, but unspoofed packet was. |
| unknown | Neither spoofed nor unspoofed packet was received. |
IPv4 Adjacent Netblock Testing:
Your host (217.61.20.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 217.61.20.x/24 | /31 | 199883 | natblock |
| 217.61.20.x/24 | /30 | 199883 | natblock |
| 217.61.20.x/24 | /29 | 199883 | natblock |
| 217.61.20.x/24 | /28 | 199883 | natblock |
| 217.61.20.x/24 | /27 | 199883 | natblock |
| 217.61.20.x/24 | /26 | 199883 | natblock |
| 217.61.20.x/24 | /25 | 199883 | natblock |
| 217.61.20.x/24 | /24 | 199883 | natblock |
| 217.61.21.x/24 | /23 | 199883 | natblock |
| 217.61.22.x/24 | /22 | 199883 | natblock |
| 217.61.16.x/24 | /21 | 199883 | natblock |
| 217.61.28.x/24 | /20 | 31034 | natblock |
| 217.61.4.x/24 | /19 | 200185 | natblock |
| 217.61.52.x/24 | /18 | 31034 | natblock |
| 217.61.84.x/24 | /17 | 29119 | natblock |
| 217.61.148.x/24 | /16 | 198570 | natblock |
| 217.60.20.x/24 | /15 | 31549 | natblock |
| 217.63.20.x/24 | /14 | 33915 | natblock |
| 217.57.20.x/24 | /13 | 3269 | natblock |
| 217.53.20.x/24 | /12 | 36992 | natblock |
| 217.45.20.x/24 | /11 | 2856 | natblock |
| 217.29.20.x/24 | /10 | 29061 | natblock |
| 217.125.20.x/24 | /9 | 3352 | natblock |
| 217.189.20.x/24 | /8 | 6805 | natblock |
Meaning of status in Received column:
| natblock | Spoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address. |
IPv4 Outbound Filtering Depth:
The tracefilter test found your host
unable to spoof routable, non-adjacent source addresses through
even the first IP hop.
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
Feedback:
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and invite users to join the Spoofer
Users Mailing List for discussion and announcements.
