Session Report
Summary:
Test run at: 2020-11-23 04:58:44 GMT
Client Prefix (v4): 185.30.233.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 |
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 (185.30.233.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
185.30.233.x/24 | /31 | 174 | no |
185.30.233.x/24 | /30 | 174 | no |
185.30.233.x/24 | /29 | 174 | no |
185.30.233.x/24 | /28 | 174 | no |
185.30.233.x/24 | /27 | 174 | no |
185.30.233.x/24 | /26 | 174 | no |
185.30.233.x/24 | /25 | 174 | no |
185.30.233.x/24 | /24 | 174 | no |
185.30.232.x/24 | /23 | 60781 | no |
185.30.235.x/24 | /22 | UNROUTED | no |
185.30.237.x/24 | /21 | 8315 | no |
185.30.225.x/24 | /20 | 60717 | no |
185.30.249.x/24 | /19 | 205579 | no |
185.30.201.x/24 | /18 | 60860 | no |
185.30.169.x/24 | /17 | 206178 | no |
185.30.105.x/24 | /16 | 60465 | no |
185.31.233.x/24 | /15 | UNROUTED | no |
185.28.233.x/24 | /14 | 39605 | no |
185.26.233.x/24 | /13 | 56503 | no |
185.22.233.x/24 | /12 | 203226 | no |
185.14.233.x/24 | /11 | 199490 | no |
185.62.233.x/24 | /10 | 6736 | no |
185.94.233.x/24 | /9 | 56595 | no |
185.158.233.x/24 | /8 | 207157 | no |
Meaning of status in Received column:
no | Packets spoofed from adjacent netblock were not received, probably due to blocking |
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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