Session Report
Summary:
Test run at: 2022-05-05 18:32:22 GMT
Client Prefix (v4): 94.45.173.x/24
Client AS (v4): 33696 (NEXTARRAY-ASN-01)
IPv4 Probes: 60
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
✔ | blocked |
| Routable |
✔ | blocked |
| Largest spoofable neighbor prefix length |
/24 |
| 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 (94.45.173.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 94.45.173.x/24 | /31 | 33696 | yes |
| 94.45.173.x/24 | /30 | 33696 | yes |
| 94.45.173.x/24 | /29 | 33696 | yes |
| 94.45.173.x/24 | /28 | 33696 | yes |
| 94.45.173.x/24 | /27 | 33696 | yes |
| 94.45.173.x/24 | /26 | 33696 | yes |
| 94.45.173.x/24 | /25 | 33696 | yes |
| 94.45.173.x/24 | /24 | 33696 | yes |
| 94.45.172.x/24 | /23 | 60781 | no |
| 94.45.175.x/24 | /22 | 49060 | no |
| 94.45.169.x/24 | /21 | 49060 | no |
| 94.45.165.x/24 | /20 | 49060 | no |
| 94.45.189.x/24 | /19 | 61317 | no |
| 94.45.141.x/24 | /18 | 29491 | no |
| 94.45.237.x/24 | /17 | 13020 | no |
| 94.45.45.x/24 | /16 | 15683 | no |
| 94.44.173.x/24 | /15 | 21334 | no |
| 94.47.173.x/24 | /14 | 29256 | no |
| 94.41.173.x/24 | /13 | 41704 | no |
| 94.37.173.x/24 | /12 | 8612 | no |
| 94.61.173.x/24 | /11 | 12353 | no |
| 94.13.173.x/24 | /10 | 5607 | no |
| 94.109.173.x/24 | /9 | 47377 | no |
| 94.173.173.x/24 | /8 | 5089 | no |
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 (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 1 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.
