New answers tagged routing
8
That seems to be a NetGear log entry, there are two possibilities for this:
SYN Port Scan: Someone (very likely automated, by an infected machine) attempting to scan your machine. They send a SYN packet to you, then your machine responds with an ACK packet. In order to prevent a connection from being established, they send you an RST (Reset) packet. (More ...
2
When used in tunnel mode IPsec treats the IP packet as a payload. Therefore, all this information is encrypted. In order to be routed correctly, the IPSec-enabled entity then build a new packet.
This IP packet is built to be send to the tunnel end, e.g. another IPSec gateway. So as to achieve this, the new IP packet will have a brand new IP-Header, with ...
5
It is not that the header has to be encrypted in tunnel mode; rather, if the header is not encrypted, it is not really a tunnel.
Tunnel mode is about having two routers linked together with an encrypted tunnel. They exchange packets for other hosts. Schematically, router A is the exit router for network netA, and router B is the exit router for network ...
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