Session Report
Summary:
Test run at: 2020-09-06 07:56:41 GMT
Client Prefix (v4): 43.249.37.x/24
Client AS (v4): 133752 (LEASEWEB-APAC-HKG-10)
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 (43.249.37.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
43.249.37.x/24 | /31 | 133752 | natblock |
43.249.37.x/24 | /30 | 133752 | natblock |
43.249.37.x/24 | /29 | 133752 | natblock |
43.249.37.x/24 | /28 | 133752 | natblock |
43.249.37.x/24 | /27 | 133752 | natblock |
43.249.37.x/24 | /26 | 133752 | natblock |
43.249.37.x/24 | /25 | 133752 | natblock |
43.249.37.x/24 | /24 | 133752 | natblock |
43.249.36.x/24 | /23 | 133752 | natblock |
43.249.39.x/24 | /22 | 59253 | natblock |
43.249.33.x/24 | /21 | 45413 | natblock |
43.249.45.x/24 | /20 | UNROUTED | natblock |
43.249.53.x/24 | /19 | 133275 | natblock |
43.249.5.x/24 | /18 | UNROUTED | natblock |
43.249.101.x/24 | /17 | 133747 | natblock |
43.249.165.x/24 | /16 | UNROUTED | natblock |
43.248.37.x/24 | /15 | 56209 | natblock |
43.251.37.x/24 | /14 | 4837 | natblock |
43.253.37.x/24 | /13 | 17686 | natblock |
43.241.37.x/24 | /12 | 133296 | natblock |
43.233.37.x/24 | /11 | 17506 | natblock |
43.217.37.x/24 | /10 | UNROUTED | natblock |
43.185.37.x/24 | /9 | UNROUTED | natblock |
43.121.37.x/24 | /8 | UNROUTED | 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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