Session Report
Summary:
Test run at: 2020-08-25 14:25:29 GMT
Client Prefix (v4): 200.122.128.x/24
Client AS (v4): 3790
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 (200.122.128.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 200.122.128.x/24 | /31 | 3790 | natblock |
| 200.122.128.x/24 | /30 | 3790 | natblock |
| 200.122.128.x/24 | /29 | 3790 | natblock |
| 200.122.128.x/24 | /28 | 3790 | natblock |
| 200.122.128.x/24 | /27 | 3790 | natblock |
| 200.122.128.x/24 | /26 | 3790 | natblock |
| 200.122.128.x/24 | /25 | 3790 | natblock |
| 200.122.128.x/24 | /24 | 3790 | natblock |
| 200.122.129.x/24 | /23 | 3790 | natblock |
| 200.122.130.x/24 | /22 | 3790 | natblock |
| 200.122.132.x/24 | /21 | 3790 | natblock |
| 200.122.136.x/24 | /20 | 3790 | natblock |
| 200.122.144.x/24 | /19 | 3790 | natblock |
| 200.122.160.x/24 | /18 | 3790 | natblock |
| 200.122.192.x/24 | /17 | 13489 | natblock |
| 200.122.0.x/24 | /16 | 10481 | natblock |
| 200.123.128.x/24 | /15 | 16814 | natblock |
| 200.120.128.x/24 | /14 | 22047 | natblock |
| 200.126.128.x/24 | /13 | 10481 | natblock |
| 200.114.128.x/24 | /12 | 10481 | natblock |
| 200.106.128.x/24 | /11 | UNROUTED | natblock |
| 200.90.128.x/24 | /10 | 21599 | natblock |
| 200.58.128.x/24 | /9 | 19422 | natblock |
| 200.250.128.x/24 | /8 | 4230 | 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.
