Session Report
Summary:
Test run at: 2021-03-21 20:30:59 GMT
Client Prefix (v4): 45.136.149.x/24
Client AS (v4): 18978 (ENZUINC-US)
IPv4 Probes: 66
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
blocked |
| Routable |
✔ | blocked |
| Largest spoofable neighbor prefix length |
/22 |
| 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 (45.136.149.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 45.136.149.x/24 | /31 | 18978 | yes |
| 45.136.149.x/24 | /30 | 18978 | yes |
| 45.136.149.x/24 | /29 | 18978 | yes |
| 45.136.149.x/24 | /28 | 18978 | yes |
| 45.136.149.x/24 | /27 | 18978 | yes |
| 45.136.149.x/24 | /26 | 18978 | yes |
| 45.136.149.x/24 | /25 | 18978 | yes |
| 45.136.149.x/24 | /24 | 18978 | yes |
| 45.136.148.x/24 | /23 | 18978 | yes |
| 45.136.151.x/24 | /22 | 18978 | yes |
| 45.136.145.x/24 | /21 | 49394 | no |
| 45.136.157.x/24 | /20 | 205199 | no |
| 45.136.133.x/24 | /19 | 61241 | no |
| 45.136.181.x/24 | /18 | 57844 | no |
| 45.136.213.x/24 | /17 | UNROUTED | no |
| 45.136.21.x/24 | /16 | 47764 | no |
| 45.137.149.x/24 | /15 | 202448 | no |
| 45.138.149.x/24 | /14 | 204805 | no |
| 45.140.149.x/24 | /13 | UNROUTED | no |
| 45.128.149.x/24 | /12 | 204957 | no |
| 45.152.149.x/24 | /11 | 141199 | no |
| 45.168.149.x/24 | /10 | 268758 | no |
| 45.200.149.x/24 | /9 | 134548 | no |
| 45.8.149.x/24 | /8 | 7724 | no |
Meaning of status in Received column:
| no | Packets spoofed from adjacent netblock were not received, probably due to blocking |
| yes | Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) |
IPv4 Outbound Filtering Depth:
The tracefilter test found your host
able to spoof routable, non-adjacent source addresses through the
first 1 IP hop(s).
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.
