Session Report
Summary:
Test run at: 2020-08-24 23:04:45 GMT
Client Prefix (v4): 125.212.217.x/24
Client AS (v4): 7552 (VIETEL-AS-AP)
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 |
/31 |
| 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 (125.212.217.x/24) can spoof 1 neighboring addresses (within your /31 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 125.212.217.x/24 | /31 | 7552 | yes |
| 125.212.217.x/24 | /30 | 7552 | natblock |
| 125.212.217.x/24 | /29 | 7552 | natblock |
| 125.212.217.x/24 | /28 | 7552 | natblock |
| 125.212.217.x/24 | /27 | 7552 | natblock |
| 125.212.217.x/24 | /26 | 7552 | natblock |
| 125.212.217.x/24 | /25 | 7552 | natblock |
| 125.212.217.x/24 | /24 | 7552 | natblock |
| 125.212.216.x/24 | /23 | 7552 | natblock |
| 125.212.219.x/24 | /22 | 7552 | natblock |
| 125.212.221.x/24 | /21 | 7552 | natblock |
| 125.212.209.x/24 | /20 | 7552 | natblock |
| 125.212.201.x/24 | /19 | 38731 | natblock |
| 125.212.249.x/24 | /18 | 38731 | natblock |
| 125.212.153.x/24 | /17 | 7552 | natblock |
| 125.212.89.x/24 | /16 | 6648 | natblock |
| 125.213.217.x/24 | /15 | 17411 | natblock |
| 125.214.217.x/24 | /14 | 4515 | natblock |
| 125.208.217.x/24 | /13 | 9781 | natblock |
| 125.220.217.x/24 | /12 | 4538 | natblock |
| 125.196.217.x/24 | /11 | 2518 | natblock |
| 125.244.217.x/24 | /10 | 9316 | natblock |
| 125.148.217.x/24 | /9 | 4766 | natblock |
| 125.84.217.x/24 | /8 | 4134 | 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.
Feedback:
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and invite users to join the Spoofer
Users Mailing List for discussion and announcements.
