Session Report
Summary:
Test run at: 2021-03-26 15:24:05 GMT
Client Prefix (v4): 216.189.56.x/24
Client AS (v4): 20150 (ANYNODE)
IPv4 Probes: 66
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
✔ | received |
| 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 (216.189.56.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 216.189.56.x/24 | /31 | 20150 | yes |
| 216.189.56.x/24 | /30 | 20150 | yes |
| 216.189.56.x/24 | /29 | 20150 | yes |
| 216.189.56.x/24 | /28 | 20150 | yes |
| 216.189.56.x/24 | /27 | 20150 | yes |
| 216.189.56.x/24 | /26 | 20150 | yes |
| 216.189.56.x/24 | /25 | 20150 | yes |
| 216.189.56.x/24 | /24 | 20150 | yes |
| 216.189.57.x/24 | /23 | 6921 | yes |
| 216.189.58.x/24 | /22 | 6921 | yes |
| 216.189.60.x/24 | /21 | 6921 | yes |
| 216.189.48.x/24 | /20 | 6921 | yes |
| 216.189.40.x/24 | /19 | 30436 | yes |
| 216.189.24.x/24 | /18 | 30436 | yes |
| 216.189.120.x/24 | /17 | 6921 | yes |
| 216.189.184.x/24 | /16 | 11776 | yes |
| 216.188.56.x/24 | /15 | 33398 | yes |
| 216.191.56.x/24 | /14 | 15290 | yes |
| 216.185.56.x/24 | /13 | 3356 | yes |
| 216.181.56.x/24 | /12 | 6407 | yes |
| 216.173.56.x/24 | /11 | 7029 | yes |
| 216.157.56.x/24 | /10 | 13768 | yes |
| 216.253.56.x/24 | /9 | 3549 | yes |
| 216.61.56.x/24 | /8 | 7018 | 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:
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.
