Ethical Hacking Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package. | Computer Forensics Training at InfoSec Institute Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors. |

| Subject: | Re: serial-line protocols |
|---|---|
| Date: | Mon, 30 Aug 2004 14:34:52 +0530 |
hi May be i was not clear in conveying our need. We first need to tap the PPP link to get the frames and then access the IP datagram. In case of an ethernet tap, the 7-byte ethernet preamble is an indication of the beginning of a frame and hence the tap is in sync with the link. In case of PPP-links how is this acheived. Thanks Raj On Mon, 30 Aug 2004 00:43:07 +0800, Fook Ming EE <eeefm@singnet.com.sg> wrote:
Hi, I think you got to do it at IP level instead of link-level of PPP. Cheers, FM -----Original Message----- From: Raj Malhotra [mailto:ral.mal@gmail.com] Sent: Thursday, August 26, 2004 8:08 PM To: focus-ids@securityfocus.com Subject: serial-line protocols Hi, We have two routers connected by fibre running a serial-line protocol like PPP. If we need to deploy a NIDS running on a linux-box having a 10/100/1000 ethernet card, would an optical-tap with a protocol converter suffice? With a serial-line protocol would any synchronization at the protocol converter be necessary?
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | SUMMARY Switch Port Mirroring, Andy Cuff |
|---|---|
| Next by Date: | Re: Firewall vs. IPS - Differences now (ISS, Intrushield 2.1?), Mike Frantzen |
| Previous by Thread: | RE: serial-line protocols, Fook Ming EE |
| Next by Thread: | session logging IDS, Raj Malhotra |
| Indexes: | [Date] [Thread] [Top] [All Lists] |