Session Report
Summary:
Test run at: 2021-02-27 16:13:01 GMT
Client Prefix (v4): 85.203.46.x/24
Client AS (v4): 13213 (UK2NET-AS)
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server) |
Source address type |
IPv4 |
Private -
RFC1918 |
blocked |
Routable |
blocked |
Largest spoofable neighbor prefix length |
/24 |
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 (85.203.46.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
85.203.46.x/24 | /31 | 13213 | yes |
85.203.46.x/24 | /30 | 13213 | natblock |
85.203.46.x/24 | /29 | 13213 | yes |
85.203.46.x/24 | /28 | 13213 | yes |
85.203.46.x/24 | /27 | 13213 | yes |
85.203.46.x/24 | /26 | 13213 | yes |
85.203.46.x/24 | /25 | 13213 | yes |
85.203.46.x/24 | /24 | 13213 | yes |
85.203.47.x/24 | /23 | 133752 | natblock |
85.203.44.x/24 | /22 | 43350 | natblock |
85.203.42.x/24 | /21 | 1239 | natblock |
85.203.38.x/24 | /20 | 39855 | natblock |
85.203.62.x/24 | /19 | UNROUTED | natblock |
85.203.14.x/24 | /18 | UNROUTED | natblock |
85.203.110.x/24 | /17 | 30801 | natblock |
85.203.174.x/24 | /16 | 43557 | natblock |
85.202.46.x/24 | /15 | 43420 | natblock |
85.201.46.x/24 | /14 | 12392 | natblock |
85.207.46.x/24 | /13 | 25248 | natblock |
85.195.46.x/24 | /12 | 35706 | natblock |
85.219.46.x/24 | /11 | 6739 | natblock |
85.235.46.x/24 | /10 | 25086 | natblock |
85.139.46.x/24 | /9 | 2860 | natblock |
85.75.46.x/24 | /8 | 6799 | natblock |
Meaning of status in Received column:
yes | Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) |
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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