Session Report
Summary:
Test run at: 2020-08-22 21:34:55 GMT
Client Prefix (v4): 37.58.58.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 |
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 (37.58.58.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 37.58.58.x/24 | /31 | 28753 | natblock |
| 37.58.58.x/24 | /30 | 28753 | natblock |
| 37.58.58.x/24 | /29 | 28753 | natblock |
| 37.58.58.x/24 | /28 | 28753 | natblock |
| 37.58.58.x/24 | /27 | 28753 | natblock |
| 37.58.58.x/24 | /26 | 28753 | natblock |
| 37.58.58.x/24 | /25 | 28753 | natblock |
| 37.58.58.x/24 | /24 | 28753 | natblock |
| 37.58.59.x/24 | /23 | 28753 | natblock |
| 37.58.56.x/24 | /22 | 28753 | natblock |
| 37.58.62.x/24 | /21 | 28753 | natblock |
| 37.58.50.x/24 | /20 | 28753 | natblock |
| 37.58.42.x/24 | /19 | 49333 | natblock |
| 37.58.26.x/24 | /18 | 25577 | natblock |
| 37.58.122.x/24 | /17 | 36351 | natblock |
| 37.58.186.x/24 | /16 | 16347 | natblock |
| 37.59.58.x/24 | /15 | 16276 | natblock |
| 37.56.58.x/24 | /14 | 25019 | natblock |
| 37.62.58.x/24 | /13 | 5432 | natblock |
| 37.50.58.x/24 | /12 | 3320 | natblock |
| 37.42.58.x/24 | /11 | 35819 | natblock |
| 37.26.58.x/24 | /10 | 39232 | natblock |
| 37.122.58.x/24 | /9 | 28812 | natblock |
| 37.186.58.x/24 | /8 | 48728 | 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:
We welcome questions and feedback to the Spoofer Information Mailing List
and invite users to join the Spoofer
Users Mailing List for discussion and announcements.
