Session Report
Summary:
Test run at: 2020-12-21 06:40:42 GMT
Client Prefix (v4): 109.238.12.x/24
Client AS (v4): 21409 (IKOULA)
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 |
none |
| 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 (109.238.12.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 109.238.12.x/24 | /31 | 21409 | no |
| 109.238.12.x/24 | /30 | 21409 | no |
| 109.238.12.x/24 | /29 | 21409 | no |
| 109.238.12.x/24 | /28 | 21409 | no |
| 109.238.12.x/24 | /27 | 21409 | no |
| 109.238.12.x/24 | /26 | 21409 | no |
| 109.238.12.x/24 | /25 | 21409 | no |
| 109.238.12.x/24 | /24 | 21409 | no |
| 109.238.13.x/24 | /23 | 21409 | no |
| 109.238.14.x/24 | /22 | 21409 | no |
| 109.238.8.x/24 | /21 | 21409 | no |
| 109.238.4.x/24 | /20 | 21409 | no |
| 109.238.28.x/24 | /19 | 51580 | no |
| 109.238.44.x/24 | /18 | 15935 | no |
| 109.238.76.x/24 | /17 | 16082 | no |
| 109.238.140.x/24 | /16 | 50821 | no |
| 109.239.12.x/24 | /15 | 43510 | no |
| 109.236.12.x/24 | /14 | 55900 | no |
| 109.234.12.x/24 | /13 | 39045 | no |
| 109.230.12.x/24 | /12 | 15962 | no |
| 109.254.12.x/24 | /11 | 20590 | no |
| 109.206.12.x/24 | /10 | 21299 | no |
| 109.174.12.x/24 | /9 | 30922 | no |
| 109.110.12.x/24 | /8 | 20910 | no |
Meaning of status in Received column:
| no | Packets spoofed from adjacent netblock were not received, probably due to blocking |
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.
