Session Report
Summary:
Test run at: 2020-08-18 06:19:53 GMT
Client Prefix (v4): 5.61.41.x/24
Client AS (v4): 28753 (LEASEWEB-DE-FRA-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 |
/29 |
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 (5.61.41.x/24) can spoof 7 neighboring addresses (within your /29 prefix)
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
5.61.41.x/24 | /31 | 28753 | natblock |
5.61.41.x/24 | /30 | 28753 | yes |
5.61.41.x/24 | /29 | 28753 | yes |
5.61.41.x/24 | /28 | 28753 | natblock |
5.61.41.x/24 | /27 | 28753 | natblock |
5.61.41.x/24 | /26 | 28753 | natblock |
5.61.41.x/24 | /25 | 28753 | natblock |
5.61.41.x/24 | /24 | 28753 | natblock |
5.61.40.x/24 | /23 | 28753 | natblock |
5.61.43.x/24 | /22 | 28753 | natblock |
5.61.45.x/24 | /21 | 28753 | natblock |
5.61.33.x/24 | /20 | 28753 | natblock |
5.61.57.x/24 | /19 | 58061 | natblock |
5.61.9.x/24 | /18 | 60748 | natblock |
5.61.105.x/24 | /17 | UNROUTED | natblock |
5.61.169.x/24 | /16 | 58243 | natblock |
5.60.41.x/24 | /15 | 8374 | natblock |
5.63.41.x/24 | /14 | 62336 | natblock |
5.57.41.x/24 | /13 | 50372 | natblock |
5.53.41.x/24 | /12 | 58224 | natblock |
5.45.41.x/24 | /11 | 200310 | natblock |
5.29.41.x/24 | /10 | 12849 | natblock |
5.125.41.x/24 | /9 | 44244 | natblock |
5.189.41.x/24 | /8 | 12668 | 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
able to spoof routable, non-adjacent source addresses through the
first 1 IP hop(s).
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
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