Session Report
Summary:
Test run at: 2020-08-31 18:02:09 GMT
Client Prefix (v4): 31.132.2.x/24
Client AS (v4): 42831 (UKSERVERS-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 |
/25 |
| 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 (31.132.2.x/24) can spoof 127 neighboring addresses (within your /25 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 31.132.2.x/24 | /31 | 42831 | yes |
| 31.132.2.x/24 | /30 | 42831 | yes |
| 31.132.2.x/24 | /29 | 42831 | yes |
| 31.132.2.x/24 | /28 | 42831 | yes |
| 31.132.2.x/24 | /27 | 42831 | yes |
| 31.132.2.x/24 | /26 | 42831 | yes |
| 31.132.2.x/24 | /25 | 42831 | yes |
| 31.132.2.x/24 | /24 | 42831 | no |
| 31.132.3.x/24 | /23 | 42831 | no |
| 31.132.0.x/24 | /22 | 42831 | no |
| 31.132.6.x/24 | /21 | 42831 | no |
| 31.132.10.x/24 | /20 | 15576 | no |
| 31.132.18.x/24 | /19 | 57294 | no |
| 31.132.34.x/24 | /18 | 60257 | no |
| 31.132.66.x/24 | /17 | 56945 | no |
| 31.132.130.x/24 | /16 | 42145 | no |
| 31.133.2.x/24 | /15 | 51290 | no |
| 31.134.2.x/24 | /14 | 48347 | no |
| 31.128.2.x/24 | /13 | 56515 | no |
| 31.140.2.x/24 | /12 | 16135 | no |
| 31.148.2.x/24 | /11 | 60075 | no |
| 31.164.2.x/24 | /10 | 6730 | no |
| 31.196.2.x/24 | /9 | 3269 | no |
| 31.4.2.x/24 | /8 | 12430 | 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
able to spoof routable, non-adjacent source addresses through the
first 1 IP hop(s).
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.
