Session Report
Summary:
Test run at: 2020-10-08 16:44:55 GMT
Client Prefix (v4): 188.72.119.x/24
Client AS (v4): 9009 (M247)
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 (188.72.119.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 188.72.119.x/24 | /31 | 9009 | yes |
| 188.72.119.x/24 | /30 | 9009 | yes |
| 188.72.119.x/24 | /29 | 9009 | yes |
| 188.72.119.x/24 | /28 | 9009 | yes |
| 188.72.119.x/24 | /27 | 9009 | yes |
| 188.72.119.x/24 | /26 | 9009 | yes |
| 188.72.119.x/24 | /25 | 9009 | yes |
| 188.72.119.x/24 | /24 | 9009 | yes |
| 188.72.118.x/24 | /23 | UNROUTED | no |
| 188.72.117.x/24 | /22 | 9009 | no |
| 188.72.115.x/24 | /21 | 9009 | no |
| 188.72.127.x/24 | /20 | 208356 | no |
| 188.72.103.x/24 | /19 | 9009 | no |
| 188.72.87.x/24 | /18 | 9009 | no |
| 188.72.55.x/24 | /17 | UNROUTED | no |
| 188.72.247.x/24 | /16 | 35415 | no |
| 188.73.119.x/24 | /15 | 6833 | no |
| 188.74.119.x/24 | /14 | 25178 | no |
| 188.76.119.x/24 | /13 | 12479 | no |
| 188.64.119.x/24 | /12 | 57214 | no |
| 188.88.119.x/24 | /11 | 31615 | no |
| 188.104.119.x/24 | /10 | 3209 | no |
| 188.8.119.x/24 | /9 | 3269 | no |
| 188.200.119.x/24 | /8 | 1136 | 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.
