Session Report
Summary:
Test run at: 2017-05-27 13:46:15 GMT
Client Prefix (v4): 81.174.242.x/24
Client AS (v4): 6871 (Plusnet)
IPv4 Probes: 131
| 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 (81.174.242.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 81.174.242.x/24 | /31 | 6871 | natblock |
| 81.174.242.x/24 | /30 | 6871 | natblock |
| 81.174.242.x/24 | /29 | 6871 | natblock |
| 81.174.242.x/24 | /28 | 6871 | natblock |
| 81.174.242.x/24 | /27 | 6871 | natblock |
| 81.174.242.x/24 | /26 | 6871 | natblock |
| 81.174.242.x/24 | /25 | 6871 | natblock |
| 81.174.242.x/24 | /24 | 6871 | natblock |
| 81.174.243.x/24 | /23 | 6871 | natblock |
| 81.174.240.x/24 | /22 | 6871 | natblock |
| 81.174.246.x/24 | /21 | 6871 | natblock |
| 81.174.250.x/24 | /20 | 6871 | natblock |
| 81.174.226.x/24 | /19 | 6871 | natblock |
| 81.174.210.x/24 | /18 | 6871 | natblock |
| 81.174.178.x/24 | /17 | 6871 | natblock |
| 81.174.114.x/24 | /16 | 3313 | natblock |
| 81.175.242.x/24 | /15 | 16086 | natblock |
| 81.172.242.x/24 | /14 | 34610 | natblock |
| 81.170.242.x/24 | /13 | 8473 | natblock |
| 81.166.242.x/24 | /12 | 29695 | natblock |
| 81.190.242.x/24 | /11 | 21021 | natblock |
| 81.142.242.x/24 | /10 | 2856 | natblock |
| 81.238.242.x/24 | /9 | 3301 | natblock |
| 81.46.242.x/24 | /8 | 16371 | 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.
