Session Report
Summary:
Test run at: 2020-08-23 14:35:50 GMT
Client Prefix (v4): 5.8.16.x/24
Client AS (v4): 206804 (EstNOC-GLOBAL)
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 (5.8.16.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
5.8.16.x/24 | /31 | 206804 | natblock |
5.8.16.x/24 | /30 | 206804 | natblock |
5.8.16.x/24 | /29 | 206804 | natblock |
5.8.16.x/24 | /28 | 206804 | natblock |
5.8.16.x/24 | /27 | 206804 | natblock |
5.8.16.x/24 | /26 | 206804 | natblock |
5.8.16.x/24 | /25 | 206804 | natblock |
5.8.16.x/24 | /24 | 206804 | natblock |
5.8.17.x/24 | /23 | 205601 | natblock |
5.8.18.x/24 | /22 | 202425 | natblock |
5.8.20.x/24 | /21 | 34665 | natblock |
5.8.24.x/24 | /20 | 202422 | natblock |
5.8.0.x/24 | /19 | UNROUTED | natblock |
5.8.48.x/24 | /18 | 34665 | natblock |
5.8.80.x/24 | /17 | 56541 | natblock |
5.8.144.x/24 | /16 | 31126 | natblock |
5.9.16.x/24 | /15 | 24940 | natblock |
5.10.16.x/24 | /14 | 60610 | natblock |
5.12.16.x/24 | /13 | 8708 | natblock |
5.0.16.x/24 | /12 | 29256 | natblock |
5.24.16.x/24 | /11 | 16135 | natblock |
5.40.16.x/24 | /10 | 6739 | natblock |
5.72.16.x/24 | /9 | 57218 | natblock |
5.136.16.x/24 | /8 | 12389 | 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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