Session Report
Summary:
Test run at: 2020-08-25 14:44:35 GMT
Client Prefix (v4): 185.213.20.x/24
Client AS (v4): 49367 (ASSEFLOW)
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 |
none |
| 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 (185.213.20.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 185.213.20.x/24 | /31 | 49367 | natblock |
| 185.213.20.x/24 | /30 | 49367 | natblock |
| 185.213.20.x/24 | /29 | 49367 | natblock |
| 185.213.20.x/24 | /28 | 49367 | natblock |
| 185.213.20.x/24 | /27 | 49367 | natblock |
| 185.213.20.x/24 | /26 | 49367 | natblock |
| 185.213.20.x/24 | /25 | 49367 | natblock |
| 185.213.20.x/24 | /24 | 49367 | natblock |
| 185.213.21.x/24 | /23 | 49367 | natblock |
| 185.213.22.x/24 | /22 | UNROUTED | natblock |
| 185.213.16.x/24 | /21 | 46261 | natblock |
| 185.213.28.x/24 | /20 | UNROUTED | natblock |
| 185.213.4.x/24 | /19 | 200043 | natblock |
| 185.213.52.x/24 | /18 | 50304 | natblock |
| 185.213.84.x/24 | /17 | 205572 | natblock |
| 185.213.148.x/24 | /16 | 3214 | natblock |
| 185.212.20.x/24 | /15 | 57119 | natblock |
| 185.215.20.x/24 | /14 | 205535 | natblock |
| 185.209.20.x/24 | /13 | 204601 | natblock |
| 185.221.20.x/24 | /12 | 201942 | natblock |
| 185.197.20.x/24 | /11 | 29256 | natblock |
| 185.245.20.x/24 | /10 | 205816 | natblock |
| 185.149.20.x/24 | /9 | 35913 | natblock |
| 185.85.20.x/24 | /8 | UNROUTED | natblock |
Meaning of status in Received column:
| natblock | Spoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address. |
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:
We welcome questions and feedback to the Spoofer Information Mailing List
and invite users to join the Spoofer
Users Mailing List for discussion and announcements.
