Session Report
Summary:
Test run at: 2020-07-24 16:53:27 GMT
Client Prefix (v4): 185.38.151.x/24
Client AS (v4): 25369 (BANDWIDTH-AS)
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 (185.38.151.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 185.38.151.x/24 | /31 | 25369 | yes |
| 185.38.151.x/24 | /30 | 25369 | yes |
| 185.38.151.x/24 | /29 | 25369 | yes |
| 185.38.151.x/24 | /28 | 25369 | yes |
| 185.38.151.x/24 | /27 | 25369 | yes |
| 185.38.151.x/24 | /26 | 25369 | yes |
| 185.38.151.x/24 | /25 | 25369 | yes |
| 185.38.151.x/24 | /24 | 25369 | yes |
| 185.38.150.x/24 | /23 | 25369 | no |
| 185.38.149.x/24 | /22 | 25369 | no |
| 185.38.147.x/24 | /21 | 20875 | no |
| 185.38.159.x/24 | /20 | 8315 | no |
| 185.38.135.x/24 | /19 | UNROUTED | no |
| 185.38.183.x/24 | /18 | UNROUTED | no |
| 185.38.215.x/24 | /17 | 21277 | no |
| 185.38.23.x/24 | /16 | 8361 | no |
| 185.39.151.x/24 | /15 | 45027 | no |
| 185.36.151.x/24 | /14 | 200134 | no |
| 185.34.151.x/24 | /13 | 25581 | no |
| 185.46.151.x/24 | /12 | 44600 | no |
| 185.54.151.x/24 | /11 | 60164 | no |
| 185.6.151.x/24 | /10 | 41956 | no |
| 185.102.151.x/24 | /9 | 198440 | no |
| 185.166.151.x/24 | /8 | UNROUTED | 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
unable to spoof routable, non-adjacent source addresses through
even the first IP hop.
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.
