Session Report
Summary:
Test run at: 2021-09-10 06:35:34 GMT
Client Prefix (v4): 2.57.187.x/24
Client AS (v4): 210200 (CloudLite)
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 |
/23 |
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 (2.57.187.x/24) can spoof 511 neighboring addresses (within your /23 prefix)
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
2.57.187.x/24 | /31 | 210200 | yes |
2.57.187.x/24 | /30 | 210200 | yes |
2.57.187.x/24 | /29 | 210200 | yes |
2.57.187.x/24 | /28 | 210200 | yes |
2.57.187.x/24 | /27 | 210200 | yes |
2.57.187.x/24 | /26 | 210200 | yes |
2.57.187.x/24 | /25 | 210200 | yes |
2.57.187.x/24 | /24 | 210200 | yes |
2.57.186.x/24 | /23 | 210200 | yes |
2.57.185.x/24 | /22 | 210200 | no |
2.57.191.x/24 | /21 | 209189 | no |
2.57.179.x/24 | /20 | 203020 | no |
2.57.171.x/24 | /19 | 262287 | no |
2.57.155.x/24 | /18 | 209868 | no |
2.57.251.x/24 | /17 | 11325 | no |
2.57.59.x/24 | /16 | 48635 | no |
2.56.187.x/24 | /15 | 213085 | no |
2.59.187.x/24 | /14 | 198473 | no |
2.61.187.x/24 | /13 | 12389 | no |
2.49.187.x/24 | /12 | 5384 | no |
2.41.187.x/24 | /11 | 30722 | no |
2.25.187.x/24 | /10 | 12576 | no |
2.121.187.x/24 | /9 | 5607 | no |
2.185.187.x/24 | /8 | 58224 | 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
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.
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