Session Report
Summary:
Test run at: 2020-09-07 13:52:10 GMT
Client Prefix (v4): 185.203.122.x/24
Client AS (v4): 36351 (SOFTLAYER)
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 (185.203.122.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 185.203.122.x/24 | /31 | 36351 | natblock |
| 185.203.122.x/24 | /30 | 36351 | natblock |
| 185.203.122.x/24 | /29 | 36351 | natblock |
| 185.203.122.x/24 | /28 | 36351 | natblock |
| 185.203.122.x/24 | /27 | 36351 | natblock |
| 185.203.122.x/24 | /26 | 36351 | natblock |
| 185.203.122.x/24 | /25 | 36351 | natblock |
| 185.203.122.x/24 | /24 | 36351 | natblock |
| 185.203.123.x/24 | /23 | 9063 | natblock |
| 185.203.120.x/24 | /22 | 42366 | natblock |
| 185.203.126.x/24 | /21 | 197075 | natblock |
| 185.203.114.x/24 | /20 | 207996 | natblock |
| 185.203.106.x/24 | /19 | 201602 | natblock |
| 185.203.90.x/24 | /18 | UNROUTED | natblock |
| 185.203.58.x/24 | /17 | 205689 | natblock |
| 185.203.250.x/24 | /16 | 62299 | natblock |
| 185.202.122.x/24 | /15 | 51300 | natblock |
| 185.201.122.x/24 | /14 | 41164 | natblock |
| 185.207.122.x/24 | /13 | 31727 | natblock |
| 185.195.122.x/24 | /12 | 206081 | natblock |
| 185.219.122.x/24 | /11 | 206481 | natblock |
| 185.235.122.x/24 | /10 | 46261 | natblock |
| 185.139.122.x/24 | /9 | 47794 | natblock |
| 185.75.122.x/24 | /8 | 198722 | 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.
