Ethereal-users: Re: [Ethereal-users] Analysing network through ethereal connected through modem
Moshe Haviv said:
> Unfortunately there is no such option. I asked the same question a year
> ago. The ETHEREAL developers answered that they did bit have any option
> for MODEM port packet collecting/sniffing and there are no plans for
> adding a new interface for modem.
There are no plans for adding anything for collecting raw data on a modem.
However, that's not necessarily what Atif Nadeem asked for:
> Im using ethereal for network analysis. Ethereal does not give me any
> option to capture the packets through modem interface rather only gives
> network adopter interface option. I want to capture the packets when I
> connect to internet through PSTN modem. Can anyone please help me?
He might have wanted to capture network packets being sent over a PPP link
that uses the modem; on a number of platforms, Ethereal *does* support
that, at least once the dial-up connection has been made and enough PPP
negotiation has taken place that a PPP network interface is available on
which to capture. (In Mac OS X, for example, the PPP interface isn't
available until that happens.)
On Windows, whether you're able to capture on a PPP device depends on the
version of WinPcap and the version of Windows; the WinPcap FAQ has this
entry:
http://winpcap.polito.it/misc/faq.htm#Q-6
