Session Report
Summary:
Test run at: 2020-08-24 16:01:51 GMT
Client Prefix (v4): 103.12.211.x/24
Client AS (v4): 132335 (NETWORK-LEAPSWITCH-IN)
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 (103.12.211.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 103.12.211.x/24 | /31 | 132335 | natblock |
| 103.12.211.x/24 | /30 | 132335 | natblock |
| 103.12.211.x/24 | /29 | 132335 | natblock |
| 103.12.211.x/24 | /28 | 132335 | natblock |
| 103.12.211.x/24 | /27 | 132335 | natblock |
| 103.12.211.x/24 | /26 | 132335 | natblock |
| 103.12.211.x/24 | /25 | 132335 | natblock |
| 103.12.211.x/24 | /24 | 132335 | natblock |
| 103.12.210.x/24 | /23 | 132334 | natblock |
| 103.12.209.x/24 | /22 | UNROUTED | natblock |
| 103.12.215.x/24 | /21 | 394381 | natblock |
| 103.12.219.x/24 | /20 | 9919 | natblock |
| 103.12.195.x/24 | /19 | 58659 | natblock |
| 103.12.243.x/24 | /18 | 9341 | natblock |
| 103.12.147.x/24 | /17 | 132326 | natblock |
| 103.12.83.x/24 | /16 | 58615 | natblock |
| 103.13.211.x/24 | /15 | 2519 | natblock |
| 103.14.211.x/24 | /14 | 133320 | natblock |
| 103.8.211.x/24 | /13 | 56134 | natblock |
| 103.4.211.x/24 | /12 | 55832 | natblock |
| 103.28.211.x/24 | /11 | 132142 | natblock |
| 103.44.211.x/24 | /10 | 24295 | natblock |
| 103.76.211.x/24 | /9 | 24186 | natblock |
| 103.140.211.x/24 | /8 | 139281 | 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.
