Session Report
Summary:
Test run at: 2020-07-29 13:27:01 GMT
Client Prefix (v4): 77.95.120.x/24
Client AS (v4): 39040 (NTSWorkspaceAG-AS39040)
IPv4 Probes: 75
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
blocked |
| Routable |
✔ | received |
| Largest spoofable neighbor prefix length |
/9 |
| 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 (77.95.120.x/24) can spoof 8388607 neighboring addresses (within your /9 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 77.95.120.x/24 | /31 | 39040 | yes |
| 77.95.120.x/24 | /30 | 39040 | yes |
| 77.95.120.x/24 | /29 | 39040 | yes |
| 77.95.120.x/24 | /28 | 39040 | yes |
| 77.95.120.x/24 | /27 | 39040 | yes |
| 77.95.120.x/24 | /26 | 39040 | yes |
| 77.95.120.x/24 | /25 | 39040 | yes |
| 77.95.120.x/24 | /24 | 39040 | yes |
| 77.95.121.x/24 | /23 | UNROUTED | no |
| 77.95.122.x/24 | /22 | UNROUTED | no |
| 77.95.124.x/24 | /21 | UNROUTED | no |
| 77.95.112.x/24 | /20 | 16303 | yes |
| 77.95.104.x/24 | /19 | 3246 | yes |
| 77.95.88.x/24 | /18 | 43087 | yes |
| 77.95.56.x/24 | /17 | 8449 | yes |
| 77.95.248.x/24 | /16 | 43190 | yes |
| 77.94.120.x/24 | /15 | 28812 | yes |
| 77.93.120.x/24 | /14 | 13055 | yes |
| 77.91.120.x/24 | /13 | 64419 | yes |
| 77.87.120.x/24 | /12 | UNROUTED | no |
| 77.79.120.x/24 | /11 | 39582 | yes |
| 77.127.120.x/24 | /10 | 9116 | yes |
| 77.31.120.x/24 | /9 | 25019 | yes |
| 77.223.120.x/24 | /8 | UNROUTED | 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 |
| 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 10 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.
