Session Report
Summary:
Test run at: 2020-08-23 19:02:23 GMT
Client Prefix (v4): 37.252.7.x/24
Client AS (v4): 43333 (XNNET)
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 (37.252.7.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 37.252.7.x/24 | /31 | 43333 | natblock |
| 37.252.7.x/24 | /30 | 43333 | natblock |
| 37.252.7.x/24 | /29 | 43333 | natblock |
| 37.252.7.x/24 | /28 | 43333 | natblock |
| 37.252.7.x/24 | /27 | 43333 | natblock |
| 37.252.7.x/24 | /26 | 43333 | natblock |
| 37.252.7.x/24 | /25 | 43333 | natblock |
| 37.252.7.x/24 | /24 | 43333 | natblock |
| 37.252.6.x/24 | /23 | 43333 | natblock |
| 37.252.5.x/24 | /22 | 34702 | natblock |
| 37.252.3.x/24 | /21 | 50673 | natblock |
| 37.252.15.x/24 | /20 | 58061 | natblock |
| 37.252.23.x/24 | /19 | UNROUTED | natblock |
| 37.252.39.x/24 | /18 | 44574 | natblock |
| 37.252.71.x/24 | /17 | 44395 | natblock |
| 37.252.135.x/24 | /16 | 48885 | natblock |
| 37.253.7.x/24 | /15 | 2119 | natblock |
| 37.254.7.x/24 | /14 | 58224 | natblock |
| 37.248.7.x/24 | /13 | 8374 | natblock |
| 37.244.7.x/24 | /12 | 57976 | natblock |
| 37.236.7.x/24 | /11 | 50710 | natblock |
| 37.220.7.x/24 | /10 | 20860 | natblock |
| 37.188.7.x/24 | /9 | 42277 | natblock |
| 37.124.7.x/24 | /8 | 35819 | 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.
