Session Report
Summary:
Test run at: 2020-08-18 10:39:28 GMT
Client Prefix (v4): 193.148.16.x/24
Client AS (v4): 9009 (M247)
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 (193.148.16.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 193.148.16.x/24 | /31 | 9009 | natblock |
| 193.148.16.x/24 | /30 | 9009 | natblock |
| 193.148.16.x/24 | /29 | 9009 | natblock |
| 193.148.16.x/24 | /28 | 9009 | natblock |
| 193.148.16.x/24 | /27 | 9009 | natblock |
| 193.148.16.x/24 | /26 | 9009 | natblock |
| 193.148.16.x/24 | /25 | 9009 | natblock |
| 193.148.16.x/24 | /24 | 9009 | natblock |
| 193.148.17.x/24 | /23 | 9009 | natblock |
| 193.148.18.x/24 | /22 | 9009 | natblock |
| 193.148.20.x/24 | /21 | 201975 | natblock |
| 193.148.24.x/24 | /20 | 3324 | natblock |
| 193.148.0.x/24 | /19 | 34740 | natblock |
| 193.148.48.x/24 | /18 | 10753 | natblock |
| 193.148.80.x/24 | /17 | 41114 | natblock |
| 193.148.144.x/24 | /16 | 3352 | natblock |
| 193.149.16.x/24 | /15 | 20655 | natblock |
| 193.150.16.x/24 | /14 | 42947 | natblock |
| 193.144.16.x/24 | /13 | 766 | natblock |
| 193.156.16.x/24 | /12 | 224 | natblock |
| 193.132.16.x/24 | /11 | 702 | natblock |
| 193.180.16.x/24 | /10 | 158 | natblock |
| 193.212.16.x/24 | /9 | 2119 | natblock |
| 193.20.16.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:
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.
