Session Report
Summary:
Test run at: 2020-06-17 16:22:04 GMT
Client Prefix (v4): 83.220.174.x/24
Client AS (v4): 29182 (THEFIRST-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 (83.220.174.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
83.220.174.x/24 | /31 | 29182 | natblock |
83.220.174.x/24 | /30 | 29182 | natblock |
83.220.174.x/24 | /29 | 29182 | natblock |
83.220.174.x/24 | /28 | 29182 | natblock |
83.220.174.x/24 | /27 | 29182 | natblock |
83.220.174.x/24 | /26 | 29182 | natblock |
83.220.174.x/24 | /25 | 29182 | natblock |
83.220.174.x/24 | /24 | 29182 | natblock |
83.220.175.x/24 | /23 | 29182 | natblock |
83.220.172.x/24 | /22 | 29182 | natblock |
83.220.170.x/24 | /21 | 29182 | natblock |
83.220.166.x/24 | /20 | 61980 | natblock |
83.220.190.x/24 | /19 | 34456 | natblock |
83.220.142.x/24 | /18 | 25074 | natblock |
83.220.238.x/24 | /17 | 16345 | natblock |
83.220.46.x/24 | /16 | 31261 | natblock |
83.221.174.x/24 | /15 | 31203 | natblock |
83.222.174.x/24 | /14 | 12615 | natblock |
83.216.174.x/24 | /13 | 21309 | natblock |
83.212.174.x/24 | /12 | 5408 | natblock |
83.204.174.x/24 | /11 | 3215 | natblock |
83.252.174.x/24 | /10 | 39651 | natblock |
83.156.174.x/24 | /9 | 12322 | natblock |
83.92.174.x/24 | /8 | 3292 | 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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