Session Report
Summary:
Test run at: 2020-09-08 17:51:11 GMT
Client Prefix (v4): 91.210.107.x/24
Client AS (v4): 49335 (KABELSPEED)
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 |
/24 |
| 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 (91.210.107.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 91.210.107.x/24 | /31 | 49335 | yes |
| 91.210.107.x/24 | /30 | 49335 | yes |
| 91.210.107.x/24 | /29 | 49335 | yes |
| 91.210.107.x/24 | /28 | 49335 | yes |
| 91.210.107.x/24 | /27 | 49335 | yes |
| 91.210.107.x/24 | /26 | 49335 | yes |
| 91.210.107.x/24 | /25 | 49335 | yes |
| 91.210.107.x/24 | /24 | 49335 | yes |
| 91.210.106.x/24 | /23 | 49335 | natblock |
| 91.210.105.x/24 | /22 | 49335 | natblock |
| 91.210.111.x/24 | /21 | 41084 | natblock |
| 91.210.99.x/24 | /20 | 50712 | natblock |
| 91.210.123.x/24 | /19 | 48004 | natblock |
| 91.210.75.x/24 | /18 | 25538 | natblock |
| 91.210.43.x/24 | /17 | 44395 | natblock |
| 91.210.235.x/24 | /16 | 39122 | natblock |
| 91.211.107.x/24 | /15 | 48654 | natblock |
| 91.208.107.x/24 | /14 | 47700 | natblock |
| 91.214.107.x/24 | /13 | 49498 | natblock |
| 91.218.107.x/24 | /12 | 48082 | natblock |
| 91.194.107.x/24 | /11 | 43144 | natblock |
| 91.242.107.x/24 | /10 | 202722 | natblock |
| 91.146.107.x/24 | /9 | 198047 | natblock |
| 91.82.107.x/24 | /8 | 12301 | 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.
