Session Report
Summary:
Test run at: 2020-03-06 04:44:11 GMT
Client Prefix (v4): 23.237.32.x/24
Client AS (v4): 174 (COGENT-174)
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 |
/29 |
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 (23.237.32.x/24) can spoof 7 neighboring addresses (within your /29 prefix)
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
23.237.32.x/24 | /31 | 174 | yes |
23.237.32.x/24 | /30 | 174 | yes |
23.237.32.x/24 | /29 | 174 | yes |
23.237.32.x/24 | /28 | 174 | no |
23.237.32.x/24 | /27 | 174 | no |
23.237.32.x/24 | /26 | 174 | no |
23.237.32.x/24 | /25 | 174 | no |
23.237.32.x/24 | /24 | 174 | no |
23.237.33.x/24 | /23 | 174 | no |
23.237.34.x/24 | /22 | 174 | no |
23.237.36.x/24 | /21 | 174 | no |
23.237.40.x/24 | /20 | 174 | no |
23.237.48.x/24 | /19 | 174 | no |
23.237.0.x/24 | /18 | 174 | no |
23.237.96.x/24 | /17 | 174 | no |
23.237.160.x/24 | /16 | 174 | no |
23.236.32.x/24 | /15 | 22892 | no |
23.239.32.x/24 | /14 | 22995 | no |
23.233.32.x/24 | /13 | 5645 | no |
23.229.32.x/24 | /12 | 55286 | no |
23.253.32.x/24 | /11 | 19994 | no |
23.205.32.x/24 | /10 | 20940 | no |
23.173.32.x/24 | /9 | 33452 | no |
23.109.32.x/24 | /8 | UNROUTED | 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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