Session Report
Summary:
Test run at: 2020-10-23 03:57:10 GMT
Client Prefix (v4): 85.17.28.x/24
Client AS (v4): 60781 (LEASEWEB-NL-AMS-01)
IPv4 Probes: 75
Client Prefix (v6): 2001:1af8:40xx::/40
Client AS (v6): 60781 (LEASEWEB-NL-AMS-01)
IPv6 Probes: 68
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 | IPv6 |
|---|
| Private -
RFC1918 or ULA |
blocked | blocked |
| Routable |
blocked | blocked |
| Largest spoofable neighbor prefix length |
none | 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 (85.17.28.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 85.17.28.x/24 | /31 | 60781 | natblock |
| 85.17.28.x/24 | /30 | 60781 | natblock |
| 85.17.28.x/24 | /29 | 60781 | natblock |
| 85.17.28.x/24 | /28 | 60781 | natblock |
| 85.17.28.x/24 | /27 | 60781 | natblock |
| 85.17.28.x/24 | /26 | 60781 | natblock |
| 85.17.28.x/24 | /25 | 60781 | natblock |
| 85.17.28.x/24 | /24 | 60781 | natblock |
| 85.17.29.x/24 | /23 | 60781 | natblock |
| 85.17.30.x/24 | /22 | 60781 | natblock |
| 85.17.24.x/24 | /21 | 60781 | natblock |
| 85.17.20.x/24 | /20 | 60781 | natblock |
| 85.17.12.x/24 | /19 | 60781 | natblock |
| 85.17.60.x/24 | /18 | 60781 | natblock |
| 85.17.92.x/24 | /17 | 60781 | natblock |
| 85.17.156.x/24 | /16 | 60781 | natblock |
| 85.16.28.x/24 | /15 | 9145 | natblock |
| 85.19.28.x/24 | /14 | 25400 | natblock |
| 85.21.28.x/24 | /13 | 8402 | natblock |
| 85.25.28.x/24 | /12 | 61157 | natblock |
| 85.1.28.x/24 | /11 | 3303 | natblock |
| 85.49.28.x/24 | /10 | 12479 | natblock |
| 85.81.28.x/24 | /9 | 9158 | natblock |
| 85.145.28.x/24 | /8 | 50266 | 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.
IPv6 probes:
| Spoofed source address | Destination | Received
|
|---|
IPv6 Adjacent Netblock Testing:
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 2001:1af8:40xx::/40 | /120 | 60781 | natblock |
| 2001:1af8:40xx::/40 | /112 | 60781 | natblock |
| 2001:1af8:40xx::/40 | /104 | 60781 | natblock |
| 2001:1af8:40xx::/40 | /96 | 60781 | natblock |
| 2001:1af8:40xx::/40 | /88 | 60781 | natblock |
| 2001:1af8:40xx::/40 | /80 | 60781 | natblock |
| 2001:1af8:40xx::/40 | /72 | 60781 | natblock |
| 2001:1af8:40xx::/40 | /64 | 60781 | natblock |
| 2001:1af8:40xx::/40 | /56 | 60781 | natblock |
| 2001:1af8:40xx::/40 | /48 | 60781 | natblock |
| 2001:1af8:40xx::/40 | /40 | 60781 | natblock |
| 2001:1af8:c0xx::/40 | /32 | 60781 | natblock |
| 2001:1a78:40xx::/40 | /24 | UNROUTED | natblock |
| 2001:9af8:40xx::/40 | /16 | 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. |
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
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