Session Report
Summary:
Test run at: 2022-08-17 14:49:04 GMT
Client Prefix (v4): 38.22.109.x/24
Client AS (v4): 399486 (VIRTUO)
IPv4 Probes: 60
| 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 (38.22.109.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 38.22.109.x/24 | /31 | 399486 | yes |
| 38.22.109.x/24 | /30 | 399486 | yes |
| 38.22.109.x/24 | /29 | 399486 | yes |
| 38.22.109.x/24 | /28 | 399486 | yes |
| 38.22.109.x/24 | /27 | 399486 | yes |
| 38.22.109.x/24 | /26 | 399486 | yes |
| 38.22.109.x/24 | /25 | 399486 | yes |
| 38.22.109.x/24 | /24 | 399486 | yes |
| 38.22.108.x/24 | /23 | 174 | yes |
| 38.22.111.x/24 | /22 | 174 | yes |
| 38.22.105.x/24 | /21 | 174 | yes |
| 38.22.101.x/24 | /20 | 174 | yes |
| 38.22.125.x/24 | /19 | 46320 | yes |
| 38.22.77.x/24 | /18 | 174 | yes |
| 38.22.45.x/24 | /17 | 174 | yes |
| 38.22.237.x/24 | /16 | 174 | yes |
| 38.23.109.x/24 | /15 | 20412 | yes |
| 38.20.109.x/24 | /14 | 32012 | yes |
| 38.18.109.x/24 | /13 | 32277 | yes |
| 38.30.109.x/24 | /12 | 174 | yes |
| 38.6.109.x/24 | /11 | 398823 | yes |
| 38.54.109.x/24 | /10 | 174 | yes |
| 38.86.109.x/24 | /9 | 174 | yes |
| 38.150.109.x/24 | /8 | 174 | yes |
Meaning of status in Received column:
| 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.
