Session Report
Summary:
Test run at: 2020-10-23 03:57:08 GMT
Client Prefix (v4): 31.204.152.x/24
Client AS (v4): 49544 (i3Dnet)
IPv4 Probes: 75
Client Prefix (v6): 2a00:1630:xx::/40
Client AS (v6): 49544 (i3Dnet)
IPv6 Probes: 68
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 | IPv6 |
|---|
| Private -
RFC1918 or ULA |
blocked | blocked |
| Routable |
blocked | blocked |
| Largest spoofable neighbor prefix length |
none | 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 (31.204.152.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 31.204.152.x/24 | /31 | 49544 | sendto |
| 31.204.152.x/24 | /30 | 49544 | sendto |
| 31.204.152.x/24 | /29 | 49544 | sendto |
| 31.204.152.x/24 | /28 | 49544 | sendto |
| 31.204.152.x/24 | /27 | 49544 | sendto |
| 31.204.152.x/24 | /26 | 49544 | sendto |
| 31.204.152.x/24 | /25 | 49544 | sendto |
| 31.204.152.x/24 | /24 | 49544 | sendto |
| 31.204.153.x/24 | /23 | 49544 | sendto |
| 31.204.154.x/24 | /22 | 49544 | sendto |
| 31.204.156.x/24 | /21 | 49544 | sendto |
| 31.204.144.x/24 | /20 | 49544 | sendto |
| 31.204.136.x/24 | /19 | 49544 | sendto |
| 31.204.184.x/24 | /18 | 39578 | sendto |
| 31.204.216.x/24 | /17 | 8585 | sendto |
| 31.204.24.x/24 | /16 | 50147 | sendto |
| 31.205.152.x/24 | /15 | 41230 | sendto |
| 31.206.152.x/24 | /14 | 8386 | sendto |
| 31.200.152.x/24 | /13 | 13280 | sendto |
| 31.196.152.x/24 | /12 | 3269 | sendto |
| 31.220.152.x/24 | /11 | 34709 | sendto |
| 31.236.152.x/24 | /10 | 3320 | sendto |
| 31.140.152.x/24 | /9 | 16135 | sendto |
| 31.76.152.x/24 | /8 | 12576 | sendto |
Meaning of status in Received column:
| sendto | The spoofer client was unable to send spoofed headers due to an operating system restriction. |
IPv4 Outbound Filtering Depth:
The tracefilter test found your host
unable to spoof routable, non-adjacent source addresses through
even the first IP hop.
IPv6 probes:
| Spoofed source address | Destination | Received
|
|---|
IPv6 Adjacent Netblock Testing:
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 2a00:1630:xx::/40 | /120 | 49544 | natblock |
| 2a00:1630:xx::/40 | /112 | 49544 | natblock |
| 2a00:1630:xx::/40 | /104 | 49544 | natblock |
| 2a00:1630:xx::/40 | /96 | 49544 | natblock |
| 2a00:1630:xx::/40 | /88 | 49544 | natblock |
| 2a00:1630:xx::/40 | /80 | 49544 | natblock |
| 2a00:1630:xx::/40 | /72 | 49544 | natblock |
| 2a00:1630:xx::/40 | /64 | 49544 | natblock |
| 2a00:1630:xx::/40 | /56 | 49544 | natblock |
| 2a00:1630:xx::/40 | /48 | 49544 | natblock |
| 2a00:1630:xx::/40 | /40 | 49544 | natblock |
| 2a00:1630:80xx::/40 | /32 | 49544 | natblock |
| 2a00:16b0:xx::/40 | /24 | 33837 | natblock |
| 2a00:9630:xx::/40 | /16 | UNROUTED | 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. |
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.
