Session Report
Summary:
Test run at: 2020-09-08 10:14:40 GMT
Client Prefix (v4): 199.58.187.x/24
Client AS (v4): 46562 (PERFORMIVE)
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 (199.58.187.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
199.58.187.x/24 | /31 | 46562 | natblock |
199.58.187.x/24 | /30 | 46562 | natblock |
199.58.187.x/24 | /29 | 46562 | natblock |
199.58.187.x/24 | /28 | 46562 | natblock |
199.58.187.x/24 | /27 | 46562 | natblock |
199.58.187.x/24 | /26 | 46562 | natblock |
199.58.187.x/24 | /25 | 46562 | natblock |
199.58.187.x/24 | /24 | 46562 | natblock |
199.58.186.x/24 | /23 | 46562 | natblock |
199.58.185.x/24 | /22 | 46562 | natblock |
199.58.191.x/24 | /21 | 15450 | natblock |
199.58.179.x/24 | /20 | 16556 | natblock |
199.58.171.x/24 | /19 | 27256 | natblock |
199.58.155.x/24 | /18 | UNROUTED | natblock |
199.58.251.x/24 | /17 | 1403 | natblock |
199.58.59.x/24 | /16 | 203 | natblock |
199.59.187.x/24 | /15 | 53661 | natblock |
199.56.187.x/24 | /14 | UNROUTED | natblock |
199.62.187.x/24 | /13 | UNROUTED | natblock |
199.50.187.x/24 | /12 | UNROUTED | natblock |
199.42.187.x/24 | /11 | UNROUTED | natblock |
199.26.187.x/24 | /10 | UNROUTED | natblock |
199.122.187.x/24 | /9 | UNROUTED | natblock |
199.186.187.x/24 | /8 | 7018 | natblock |
Meaning of status in Received column:
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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