Session Report
Summary:
Test run at: 2021-02-27 16:25:21 GMT
Client Prefix (v4): 45.130.136.x/24
Client AS (v4): 9009 (M247)
IPv4 Probes: 69
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
blocked |
| Routable |
blocked |
| Largest spoofable neighbor prefix length |
/26 |
| 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 (45.130.136.x/24) can spoof 63 neighboring addresses (within your /26 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 45.130.136.x/24 | /31 | 9009 | natblock |
| 45.130.136.x/24 | /30 | 9009 | yes |
| 45.130.136.x/24 | /29 | 9009 | yes |
| 45.130.136.x/24 | /28 | 9009 | yes |
| 45.130.136.x/24 | /27 | 9009 | yes |
| 45.130.136.x/24 | /26 | 9009 | yes |
| 45.130.136.x/24 | /25 | 9009 | natblock |
| 45.130.136.x/24 | /24 | 9009 | natblock |
| 45.130.137.x/24 | /23 | 209854 | natblock |
| 45.130.138.x/24 | /22 | 213035 | natblock |
| 45.130.140.x/24 | /21 | 9009 | natblock |
| 45.130.128.x/24 | /20 | 60781 | natblock |
| 45.130.152.x/24 | /19 | 64271 | natblock |
| 45.130.168.x/24 | /18 | 44676 | natblock |
| 45.130.200.x/24 | /17 | 62068 | natblock |
| 45.130.8.x/24 | /16 | 35913 | natblock |
| 45.131.136.x/24 | /15 | 61323 | natblock |
| 45.128.136.x/24 | /14 | 394648 | natblock |
| 45.134.136.x/24 | /13 | 39855 | natblock |
| 45.138.136.x/24 | /12 | 3356 | natblock |
| 45.146.136.x/24 | /11 | 12586 | natblock |
| 45.162.136.x/24 | /10 | 268520 | natblock |
| 45.194.136.x/24 | /9 | 134548 | natblock |
| 45.2.136.x/24 | /8 | 7311 | natblock |
Meaning of status in Received column:
| yes | Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) |
| 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.
