Session Report
Summary:
Test run at: 2020-08-24 20:03:12 GMT
Client Prefix (v4): 141.105.64.x/24
Client AS (v4): 49335 (KABELSPEED)
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 (141.105.64.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 141.105.64.x/24 | /31 | 49335 | natblock |
| 141.105.64.x/24 | /30 | 49335 | natblock |
| 141.105.64.x/24 | /29 | 49335 | natblock |
| 141.105.64.x/24 | /28 | 49335 | natblock |
| 141.105.64.x/24 | /27 | 49335 | natblock |
| 141.105.64.x/24 | /26 | 49335 | natblock |
| 141.105.64.x/24 | /25 | 49335 | natblock |
| 141.105.64.x/24 | /24 | 49335 | natblock |
| 141.105.65.x/24 | /23 | 49335 | natblock |
| 141.105.66.x/24 | /22 | 49335 | natblock |
| 141.105.68.x/24 | /21 | 49335 | natblock |
| 141.105.72.x/24 | /20 | 197383 | natblock |
| 141.105.80.x/24 | /19 | 24634 | natblock |
| 141.105.96.x/24 | /18 | 200064 | natblock |
| 141.105.0.x/24 | /17 | 12871 | natblock |
| 141.105.192.x/24 | /16 | 5413 | natblock |
| 141.104.64.x/24 | /15 | 21508 | natblock |
| 141.107.64.x/24 | /14 | 1468 | natblock |
| 141.109.64.x/24 | /13 | 40007 | natblock |
| 141.97.64.x/24 | /12 | UNROUTED | natblock |
| 141.121.64.x/24 | /11 | UNROUTED | natblock |
| 141.73.64.x/24 | /10 | UNROUTED | natblock |
| 141.41.64.x/24 | /9 | 680 | natblock |
| 141.233.64.x/24 | /8 | 3128 | 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:
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and invite users to join the Spoofer
Users Mailing List for discussion and announcements.
