Session Report
Summary:
Test run at: 2017-05-26 17:37:33 GMT
Client Prefix (v4): 217.66.157.x/24
Client AS (v4): 8359 (MTS)
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 (217.66.157.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 217.66.157.x/24 | /31 | 8359 | natblock |
| 217.66.157.x/24 | /30 | 8359 | natblock |
| 217.66.157.x/24 | /29 | 8359 | natblock |
| 217.66.157.x/24 | /28 | 8359 | natblock |
| 217.66.157.x/24 | /27 | 8359 | natblock |
| 217.66.157.x/24 | /26 | 8359 | natblock |
| 217.66.157.x/24 | /25 | 8359 | natblock |
| 217.66.157.x/24 | /24 | 8359 | natblock |
| 217.66.156.x/24 | /23 | 8359 | natblock |
| 217.66.159.x/24 | /22 | 8359 | natblock |
| 217.66.153.x/24 | /21 | 8359 | natblock |
| 217.66.149.x/24 | /20 | 8359 | natblock |
| 217.66.141.x/24 | /19 | 5669 | natblock |
| 217.66.189.x/24 | /18 | 15935 | natblock |
| 217.66.221.x/24 | /17 | 24631 | natblock |
| 217.66.29.x/24 | /16 | 29194 | natblock |
| 217.67.157.x/24 | /15 | 30801 | natblock |
| 217.64.157.x/24 | /14 | UNROUTED | natblock |
| 217.70.157.x/24 | /13 | 34081 | natblock |
| 217.74.157.x/24 | /12 | 3308 | natblock |
| 217.82.157.x/24 | /11 | 3320 | natblock |
| 217.98.157.x/24 | /10 | 5617 | natblock |
| 217.2.157.x/24 | /9 | 3320 | natblock |
| 217.194.157.x/24 | /8 | 8513 | 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.
