Session Report
Summary:
Test run at: 2017-10-03 17:40:09 GMT
Client Prefix (v4): 185.40.76.x/24
Client AS (v4): 199427 (DataHarbour-AS)
IPv4 Probes: 118
| 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 (185.40.76.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 185.40.76.x/24 | /31 | 199427 | yes |
| 185.40.76.x/24 | /30 | 199427 | yes |
| 185.40.76.x/24 | /29 | 199427 | yes |
| 185.40.76.x/24 | /28 | 199427 | yes |
| 185.40.76.x/24 | /27 | 199427 | yes |
| 185.40.76.x/24 | /26 | 199427 | yes |
| 185.40.76.x/24 | /25 | 199427 | yes |
| 185.40.76.x/24 | /24 | 199427 | yes |
| 185.40.77.x/24 | /23 | 199427 | yes |
| 185.40.78.x/24 | /22 | 199427 | yes |
| 185.40.72.x/24 | /21 | 199484 | yes |
| 185.40.68.x/24 | /20 | UNROUTED | no |
| 185.40.92.x/24 | /19 | 61044 | yes |
| 185.40.108.x/24 | /18 | 203096 | yes |
| 185.40.12.x/24 | /17 | 35574 | yes |
| 185.40.204.x/24 | /16 | 44646 | yes |
| 185.41.76.x/24 | /15 | 21232 | yes |
| 185.42.76.x/24 | /14 | 199924 | yes |
| 185.44.76.x/24 | /13 | 200039 | yes |
| 185.32.76.x/24 | /12 | 62749 | yes |
| 185.56.76.x/24 | /11 | 62235 | yes |
| 185.8.76.x/24 | /10 | 35344 | yes |
| 185.104.76.x/24 | /9 | 28774 | yes |
| 185.168.76.x/24 | /8 | 206952 | yes |
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 |
| 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.
