Session Report
Summary:
Test run at: 2016-11-05 08:05:41 GMT
Client Prefix (v4): 217.145.162.x/24
Client AS (v4): 16344 (IS-BG-AS)
IPv4 Probes: 88
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
received |
| Routable |
blocked |
| Largest spoofable neighbor prefix length |
/22 |
| 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 (217.145.162.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 217.145.162.x/24 | /31 | 16344 | yes |
| 217.145.162.x/24 | /30 | 16344 | yes |
| 217.145.162.x/24 | /29 | 16344 | yes |
| 217.145.162.x/24 | /28 | 16344 | yes |
| 217.145.162.x/24 | /27 | 16344 | yes |
| 217.145.162.x/24 | /26 | 16344 | yes |
| 217.145.162.x/24 | /25 | 16344 | yes |
| 217.145.162.x/24 | /24 | 16344 | yes |
| 217.145.163.x/24 | /23 | 16344 | no |
| 217.145.160.x/24 | /22 | 16344 | yes |
| 217.145.166.x/24 | /21 | UNROUTED | no |
| 217.145.170.x/24 | /20 | UNROUTED | no |
| 217.145.178.x/24 | /19 | 31346 | no |
| 217.145.130.x/24 | /18 | 49454 | no |
| 217.145.226.x/24 | /17 | UNROUTED | no |
| 217.145.34.x/24 | /16 | 20650 | no |
| 217.144.162.x/24 | /15 | 57251 | no |
| 217.147.162.x/24 | /14 | 21379 | no |
| 217.149.162.x/24 | /13 | 12793 | no |
| 217.153.162.x/24 | /12 | 5588 | no |
| 217.129.162.x/24 | /11 | 13156 | no |
| 217.177.162.x/24 | /10 | 5503 | no |
| 217.209.162.x/24 | /9 | 3301 | no |
| 217.17.162.x/24 | /8 | 15757 | 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.
