Scanning public IPs and rogue gateways in LAN
2 posts · Closed
Andres Guest
Excellent app! I have two questions:
How can I scan all public IPs in the LAN range?
How can I scan VPNs/proxy and rogue gateways in my LAN?
Andrew SoftPerfect
From your questions, it is not very clear what you mean.
- A LAN range is usually one of these: 10.x.x.x, 172.16.x.x or 192.168.x.x. These IP addresses are private and not routable, so there are no public IP addresses in a LAN range.
- Scanning for open VPN services would require you to probe some TCP/UDP ports, which are specific to every VPN type. This can be done with a different application of ours - Network Scanner.
- Scanning for open proxies would likewise require you to probe common proxy ports, usually, those are TCP ports. Again, this can be done with the Network Scanner.
- Scanning for rogue getaways, assuming you refer to a device configured to route packets, would require sending a specially crafted packet (e.g. TTL = 1, Destination = 1.1.1.1) and analysing the response.
On the whole, what you are asking requires a sound understanding of networking, and you would need advanced tools like Nmap. Unfortunately, that is not something we can further advise on.
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