ntop should handle ppp, maybe... intop, well, it's unsupported, so YMMV.
We had a discussion a couple of weeks ago on PPPoE vs PPPoA vs PPP itself. There is some code in the development version that might work for you, but I don't remember if it's in 2.1.51 - you may have to grab a current snapshot from http://snapshot.ntop.org. And, IIRC, we never closed the loop - nobody with PPPoE ever responded to my query. It could be that the handling of some flavors of PPP is now broken... What to look for... 1. (Let's get the simple stuff out of the way) Does a packet sniffer (e.g. tcpdump et al) show packets on that interface. I know you're connected, but all ntop does is use libpcap, so checking w/ tcpdump is an easy way to see the raw data that ntop should be handling. 2. Check ifconfig and see what your defined interfaces are... you should also see increasing counts. 3. What's your ntop command line? Are you giving a -i parameter to tell ntop to look at the right interface(s)? 4. In the log (at least with the newest versions), there should be messages like this: Oct 16 16:34:13 tigger ntop[9316]: Device 0(eth0) DLT_ is 1, assuming mtu 1514, header 14 Oct 16 16:34:13 tigger ntop[9316]: Device 1(eth1) DLT_ is 1, assuming mtu 1514, header 14 what does your log say? (If the header length is wrong, ntop is probably mis-counting the packets or throwing them away). 5. bring up the text info page (textinfo.html) cut&paste that... -----Burton -----Original Message----- From: [EMAIL PROTECTED] [mailto:ntop-admin@;unipi.it]On Behalf Of kihan Sent: Thursday, October 17, 2002 4:29 AM To: [EMAIL PROTECTED] Subject: [Ntop] question about interfaces hello, i have only one question for you about ntop. i have setup ntop on my linux gateway, everthing seems to work fine, but ntop does not collect any data. when i use intop i get follwoing output, which shows that packets are collected, but no more information. so can anyone answer me if ntop does not work with modem interfaces (external isdn modem, ppp0 interface), or i'm missing something??? sorry if i this question is stupid, buw i'm a ntop newbie... ;-) thanks for any help, kihan ps: i have compiled the newest versions of libpcap (0.7.1) and ntop (2.1.3). kernel: 2.4.12 with lvm, soft-raid and xfs, netfilter enabled i have open ssh-connections from outside (remote from my company) and i'm surfing on my web-server, so there is traffic, but ntop does not report any. _______________________________________________ Ntop mailing list [EMAIL PROTECTED] http://listgateway.unipi.it/mailman/listinfo/ntop
