Session Report
Summary:
Test run at: 2023-05-26 09:15:56 GMT
Client Prefix (v4): 176.123.6.x/24
Client AS (v4): 200019 (AlexHost)
IPv4 Probes: 60
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
blocked |
| Routable |
✔ | received |
| Largest spoofable neighbor prefix length |
/21 |
| 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 (176.123.6.x/24) can spoof 2047 neighboring addresses (within your /21 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 176.123.6.x/24 | /31 | 200019 | yes |
| 176.123.6.x/24 | /30 | 200019 | yes |
| 176.123.6.x/24 | /29 | 200019 | yes |
| 176.123.6.x/24 | /28 | 200019 | yes |
| 176.123.6.x/24 | /27 | 200019 | yes |
| 176.123.6.x/24 | /26 | 200019 | yes |
| 176.123.6.x/24 | /25 | 200019 | yes |
| 176.123.6.x/24 | /24 | 200019 | yes |
| 176.123.7.x/24 | /23 | 200019 | yes |
| 176.123.4.x/24 | /22 | 200019 | yes |
| 176.123.2.x/24 | /21 | 200019 | yes |
| 176.123.14.x/24 | /20 | 42306 | no |
| 176.123.22.x/24 | /19 | 30873 | no |
| 176.123.38.x/24 | /18 | 61124 | no |
| 176.123.70.x/24 | /17 | 59506 | no |
| 176.123.134.x/24 | /16 | 45054 | no |
| 176.122.6.x/24 | /15 | 49588 | no |
| 176.121.6.x/24 | /14 | 41244 | no |
| 176.127.6.x/24 | /13 | 3303 | no |
| 176.115.6.x/24 | /12 | 58350 | no |
| 176.107.6.x/24 | /11 | 48320 | no |
| 176.91.6.x/24 | /10 | 16135 | no |
| 176.59.6.x/24 | /9 | 15378 | no |
| 176.251.6.x/24 | /8 | 5607 | 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.
