Session Report
Summary:
Test run at: 2020-04-06 08:23:08 GMT
Client Prefix (v4): 194.31.237.x/24
Client AS (v4): 48693 (NTSERVICE-AS)
IPv4 Probes: 75
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
✔ | received |
| Routable |
received |
| Largest spoofable neighbor prefix length |
/8 |
| 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 (194.31.237.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 194.31.237.x/24 | /31 | 48693 | yes |
| 194.31.237.x/24 | /30 | 48693 | yes |
| 194.31.237.x/24 | /29 | 48693 | yes |
| 194.31.237.x/24 | /28 | 48693 | yes |
| 194.31.237.x/24 | /27 | 48693 | yes |
| 194.31.237.x/24 | /26 | 48693 | yes |
| 194.31.237.x/24 | /25 | 48693 | yes |
| 194.31.237.x/24 | /24 | 48693 | yes |
| 194.31.236.x/24 | /23 | 48693 | yes |
| 194.31.239.x/24 | /22 | UNROUTED | yes |
| 194.31.233.x/24 | /21 | 31550 | yes |
| 194.31.229.x/24 | /20 | 203329 | yes |
| 194.31.253.x/24 | /19 | 198902 | yes |
| 194.31.205.x/24 | /18 | UNROUTED | yes |
| 194.31.173.x/24 | /17 | UNROUTED | yes |
| 194.31.109.x/24 | /16 | 3269 | yes |
| 194.30.237.x/24 | /15 | 3329 | yes |
| 194.29.237.x/24 | /14 | 20647 | yes |
| 194.27.237.x/24 | /13 | 8517 | yes |
| 194.23.237.x/24 | /12 | 3301 | yes |
| 194.15.237.x/24 | /11 | 6805 | yes |
| 194.63.237.x/24 | /10 | 8248 | yes |
| 194.95.237.x/24 | /9 | 680 | yes |
| 194.159.237.x/24 | /8 | 2529 | yes |
Meaning of status in Received column:
| 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.
