Session Report
Summary:
Test run at: 2020-09-08 02:09:48 GMT
Client Prefix (v4): 77.81.191.x/24
Client AS (v4): 25369 (BANDWIDTH-AS)
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 (77.81.191.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
77.81.191.x/24 | /31 | 25369 | natblock |
77.81.191.x/24 | /30 | 25369 | natblock |
77.81.191.x/24 | /29 | 25369 | natblock |
77.81.191.x/24 | /28 | 25369 | natblock |
77.81.191.x/24 | /27 | 25369 | natblock |
77.81.191.x/24 | /26 | 25369 | natblock |
77.81.191.x/24 | /25 | 25369 | natblock |
77.81.191.x/24 | /24 | 25369 | natblock |
77.81.190.x/24 | /23 | 41055 | natblock |
77.81.189.x/24 | /22 | 42695 | natblock |
77.81.187.x/24 | /21 | 39815 | natblock |
77.81.183.x/24 | /20 | 13209 | natblock |
77.81.175.x/24 | /19 | 12479 | natblock |
77.81.159.x/24 | /18 | 58224 | natblock |
77.81.255.x/24 | /17 | UNROUTED | natblock |
77.81.63.x/24 | /16 | UNROUTED | natblock |
77.80.191.x/24 | /15 | UNROUTED | natblock |
77.83.191.x/24 | /14 | 48696 | natblock |
77.85.191.x/24 | /13 | 8866 | natblock |
77.89.191.x/24 | /12 | 39545 | natblock |
77.65.191.x/24 | /11 | UNROUTED | natblock |
77.113.191.x/24 | /10 | 8374 | natblock |
77.17.191.x/24 | /9 | 2119 | natblock |
77.209.191.x/24 | /8 | 12430 | 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.
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