Session Report
Summary:
Test run at: 2024-04-03 12:57:40 GMT
Client Prefix (v4): 138.118.116.x/24
Client AS (v4): 40850 (ENKI)
IPv4 Probes: 66
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
blocked |
| Routable |
received |
| Largest spoofable neighbor prefix length |
/8 |
| 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 (138.118.116.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 138.118.116.x/24 | /31 | 40850 | yes |
| 138.118.116.x/24 | /30 | 40850 | yes |
| 138.118.116.x/24 | /29 | 40850 | yes |
| 138.118.116.x/24 | /28 | 40850 | yes |
| 138.118.116.x/24 | /27 | 40850 | yes |
| 138.118.116.x/24 | /26 | 40850 | yes |
| 138.118.116.x/24 | /25 | 40850 | yes |
| 138.118.116.x/24 | /24 | 40850 | yes |
| 138.118.117.x/24 | /23 | 40850 | yes |
| 138.118.118.x/24 | /22 | 40850 | yes |
| 138.118.112.x/24 | /21 | 20207 | yes |
| 138.118.124.x/24 | /20 | 28005 | yes |
| 138.118.100.x/24 | /19 | 52708 | yes |
| 138.118.84.x/24 | /18 | 53184 | yes |
| 138.118.52.x/24 | /17 | 264249 | yes |
| 138.118.244.x/24 | /16 | 264270 | yes |
| 138.119.116.x/24 | /15 | 611 | yes |
| 138.116.116.x/24 | /14 | 33004 | yes |
| 138.114.116.x/24 | /13 | UNROUTED | no |
| 138.126.116.x/24 | /12 | UNROUTED | no |
| 138.102.116.x/24 | /11 | 2200 | yes |
| 138.86.116.x/24 | /10 | 15295 | yes |
| 138.54.116.x/24 | /9 | UNROUTED | no |
| 138.246.116.x/24 | /8 | 12816 | yes |
Meaning of status in Received column:
| no | Packets spoofed from adjacent netblock were not received, probably due to blocking |
| yes | Packets spoofed from adjacent netblock were received |
| yes | Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) |
IPv4 Outbound Filtering Depth:
The tracefilter test found your host
able to spoof routable, non-adjacent source addresses through the
first 10 IP hop(s).
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.
