Session Report
Summary:
Test run at: 2019-01-20 01:08:40 GMT
Client Prefix (v4): 109.169.41.x/24
Client AS (v4): 20860 (IOMART-AS)
IPv4 Probes: 124
| 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 (109.169.41.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 109.169.41.x/24 | /31 | 20860 | yes |
| 109.169.41.x/24 | /30 | 20860 | yes |
| 109.169.41.x/24 | /29 | 20860 | yes |
| 109.169.41.x/24 | /28 | 20860 | yes |
| 109.169.41.x/24 | /27 | 20860 | yes |
| 109.169.41.x/24 | /26 | 20860 | yes |
| 109.169.41.x/24 | /25 | 20860 | yes |
| 109.169.41.x/24 | /24 | 20860 | yes |
| 109.169.40.x/24 | /23 | 20860 | no |
| 109.169.43.x/24 | /22 | 20860 | no |
| 109.169.45.x/24 | /21 | 20860 | no |
| 109.169.33.x/24 | /20 | 20860 | no |
| 109.169.57.x/24 | /19 | 20860 | no |
| 109.169.9.x/24 | /18 | 20860 | no |
| 109.169.105.x/24 | /17 | 29300 | no |
| 109.169.169.x/24 | /16 | 12389 | no |
| 109.168.41.x/24 | /15 | 5602 | no |
| 109.171.41.x/24 | /14 | 21127 | no |
| 109.173.41.x/24 | /13 | 42610 | no |
| 109.161.41.x/24 | /12 | 12389 | no |
| 109.185.41.x/24 | /11 | 8926 | no |
| 109.137.41.x/24 | /10 | 5432 | no |
| 109.233.41.x/24 | /9 | 15570 | no |
| 109.41.41.x/24 | /8 | 3209 | 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.
