Session Report
Summary:
Test run at: 2020-10-23 03:59:52 GMT
Client Prefix (v4): 185.41.240.x/24
Client AS (v4): 50304 (BLIX)
IPv4 Probes: 75
Client Prefix (v6): 2a02:20c8:33xx::/40
Client AS (v6): 50304 (BLIX)
IPv6 Probes: 68
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 | IPv6 |
|---|
| Private -
RFC1918 or ULA |
unknown | blocked |
| Routable |
unknown | 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 (185.41.240.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 185.41.240.x/24 | /31 | 50304 | sendto |
| 185.41.240.x/24 | /30 | 50304 | sendto |
| 185.41.240.x/24 | /29 | 50304 | sendto |
| 185.41.240.x/24 | /28 | 50304 | sendto |
| 185.41.240.x/24 | /27 | 50304 | sendto |
| 185.41.240.x/24 | /26 | 50304 | sendto |
| 185.41.240.x/24 | /25 | 50304 | sendto |
| 185.41.240.x/24 | /24 | 50304 | sendto |
| 185.41.241.x/24 | /23 | 8896 | sendto |
| 185.41.242.x/24 | /22 | 50304 | sendto |
| 185.41.244.x/24 | /21 | 62235 | sendto |
| 185.41.248.x/24 | /20 | 44600 | sendto |
| 185.41.224.x/24 | /19 | 51409 | sendto |
| 185.41.208.x/24 | /18 | 62274 | sendto |
| 185.41.176.x/24 | /17 | 199951 | sendto |
| 185.41.112.x/24 | /16 | 62283 | sendto |
| 185.40.240.x/24 | /15 | 24631 | sendto |
| 185.43.240.x/24 | /14 | 206379 | sendto |
| 185.45.240.x/24 | /13 | 8823 | sendto |
| 185.33.240.x/24 | /12 | UNROUTED | sendto |
| 185.57.240.x/24 | /11 | 201955 | sendto |
| 185.9.240.x/24 | /10 | UNROUTED | sendto |
| 185.105.240.x/24 | /9 | 200480 | sendto |
| 185.169.240.x/24 | /8 | 60016 | sendto |
Meaning of status in Received column:
| sendto | The spoofer client was unable to send spoofed headers due to an operating system restriction. |
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 |
|---|
| 2a02:20c8:33xx::/40 | /120 | 50304 | natblock |
| 2a02:20c8:33xx::/40 | /112 | 50304 | natblock |
| 2a02:20c8:33xx::/40 | /104 | 50304 | natblock |
| 2a02:20c8:33xx::/40 | /96 | 50304 | natblock |
| 2a02:20c8:33xx::/40 | /88 | 50304 | natblock |
| 2a02:20c8:33xx::/40 | /80 | 50304 | natblock |
| 2a02:20c8:33xx::/40 | /72 | 50304 | natblock |
| 2a02:20c8:33xx::/40 | /64 | 50304 | natblock |
| 2a02:20c8:33xx::/40 | /56 | 50304 | natblock |
| 2a02:20c8:33xx::/40 | /48 | 50304 | natblock |
| 2a02:20c8:33xx::/40 | /40 | 50304 | natblock |
| 2a02:20c8:b3xx::/40 | /32 | 50304 | natblock |
| 2a02:2048:33xx::/40 | /24 | 1342 | natblock |
| 2a02:a0c8:33xx::/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.
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.
