Session Report
Summary:
Test run at: 2020-06-05 16:38:39 GMT
Client Prefix (v4): 91.213.8.x/24
Client AS (v4): 48031 (XServer)
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 |
/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 (91.213.8.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 91.213.8.x/24 | /31 | 48031 | yes |
| 91.213.8.x/24 | /30 | 48031 | yes |
| 91.213.8.x/24 | /29 | 48031 | yes |
| 91.213.8.x/24 | /28 | 48031 | yes |
| 91.213.8.x/24 | /27 | 48031 | yes |
| 91.213.8.x/24 | /26 | 48031 | yes |
| 91.213.8.x/24 | /25 | 48031 | yes |
| 91.213.8.x/24 | /24 | 48031 | yes |
| 91.213.9.x/24 | /23 | 12301 | no |
| 91.213.10.x/24 | /22 | 5588 | no |
| 91.213.12.x/24 | /21 | UNROUTED | no |
| 91.213.0.x/24 | /20 | 196793 | no |
| 91.213.24.x/24 | /19 | 43284 | no |
| 91.213.40.x/24 | /18 | 6830 | no |
| 91.213.72.x/24 | /17 | UNROUTED | no |
| 91.213.136.x/24 | /16 | 33998 | no |
| 91.212.8.x/24 | /15 | UNROUTED | no |
| 91.215.8.x/24 | /14 | 29074 | no |
| 91.209.8.x/24 | /13 | 48115 | no |
| 91.221.8.x/24 | /12 | 39209 | no |
| 91.197.8.x/24 | /11 | 43319 | no |
| 91.245.8.x/24 | /10 | 6830 | no |
| 91.149.8.x/24 | /9 | 2116 | no |
| 91.85.8.x/24 | /8 | 12513 | 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:
We welcome questions and feedback to the Spoofer Information Mailing List
and invite users to join the Spoofer
Users Mailing List for discussion and announcements.
