Session Report
Summary:
Test run at: 2020-08-24 14:32:40 GMT
Client Prefix (v4): 192.71.26.x/24
Client AS (v4): 56630 (MELBICOM-EU-AS)
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 (192.71.26.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 192.71.26.x/24 | /31 | 56630 | yes |
| 192.71.26.x/24 | /30 | 56630 | yes |
| 192.71.26.x/24 | /29 | 56630 | yes |
| 192.71.26.x/24 | /28 | 56630 | yes |
| 192.71.26.x/24 | /27 | 56630 | yes |
| 192.71.26.x/24 | /26 | 56630 | yes |
| 192.71.26.x/24 | /25 | 56630 | yes |
| 192.71.26.x/24 | /24 | 56630 | yes |
| 192.71.27.x/24 | /23 | 61102 | natblock |
| 192.71.24.x/24 | /22 | 3224 | natblock |
| 192.71.30.x/24 | /21 | 42708 | natblock |
| 192.71.18.x/24 | /20 | 51747 | natblock |
| 192.71.10.x/24 | /19 | 42708 | natblock |
| 192.71.58.x/24 | /18 | 43893 | natblock |
| 192.71.90.x/24 | /17 | 3246 | natblock |
| 192.71.154.x/24 | /16 | 2841 | natblock |
| 192.70.26.x/24 | /15 | 2200 | natblock |
| 192.69.26.x/24 | /14 | 14746 | natblock |
| 192.67.26.x/24 | /13 | 19370 | natblock |
| 192.79.26.x/24 | /12 | UNROUTED | natblock |
| 192.87.26.x/24 | /11 | 1103 | natblock |
| 192.103.26.x/24 | /10 | 393790 | natblock |
| 192.7.26.x/24 | /9 | UNROUTED | natblock |
| 192.199.26.x/24 | /8 | UNROUTED | 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:
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.
