Session Report
Summary:
Test run at: 2020-08-31 16:40:35 GMT
Client Prefix (v4): 185.17.157.x/24
Client AS (v4): 200761 (REALCOMM)
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 (185.17.157.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 185.17.157.x/24 | /31 | 200761 | natblock |
| 185.17.157.x/24 | /30 | 200761 | natblock |
| 185.17.157.x/24 | /29 | 200761 | natblock |
| 185.17.157.x/24 | /28 | 200761 | natblock |
| 185.17.157.x/24 | /27 | 200761 | natblock |
| 185.17.157.x/24 | /26 | 200761 | natblock |
| 185.17.157.x/24 | /25 | 200761 | natblock |
| 185.17.157.x/24 | /24 | 200761 | natblock |
| 185.17.156.x/24 | /23 | 200761 | natblock |
| 185.17.159.x/24 | /22 | 200761 | natblock |
| 185.17.153.x/24 | /21 | 56340 | natblock |
| 185.17.149.x/24 | /20 | 20860 | natblock |
| 185.17.141.x/24 | /19 | 48757 | natblock |
| 185.17.189.x/24 | /18 | 201236 | natblock |
| 185.17.221.x/24 | /17 | UNROUTED | natblock |
| 185.17.29.x/24 | /16 | 199420 | natblock |
| 185.16.157.x/24 | /15 | UNROUTED | natblock |
| 185.19.157.x/24 | /14 | 199359 | natblock |
| 185.21.157.x/24 | /13 | 42429 | natblock |
| 185.25.157.x/24 | /12 | 9009 | natblock |
| 185.1.157.x/24 | /11 | UNROUTED | natblock |
| 185.49.157.x/24 | /10 | 200030 | natblock |
| 185.81.157.x/24 | /9 | 198375 | natblock |
| 185.145.157.x/24 | /8 | 64245 | 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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and invite users to join the Spoofer
Users Mailing List for discussion and announcements.
