[tcpdump-workers] how to construct tcpdump readable packets

2006-04-06 Thread Latha G
Hi all, Is there any way to construct manually a tcpdump readable packet? As we know the header structres, we can fill those header information and put it in a string(packet).. then how to convert this packet to a raw packet such that it can be read by tcpdump? Thanks in advance. -- Regards, La

Re: [tcpdump-workers] Strange behavior of pcap filter

2006-04-06 Thread Guy Harris
On Apr 6, 2006, at 2:22 PM, J S wrote: I am developing an active monitoring system, which implements pcap filter. What do you mean by "implements pcap filter"? The requirement is to send probes with a high monitoring rate e.g. 40 msec and the probe packets have data of 12 bytes. For each

Re: [tcpdump-workers] Strange behavior of pcap filter

2006-04-06 Thread Ian McDonald
On 4/7/06, J S <[EMAIL PROTECTED]> wrote: > Hello, > > I am developing an active monitoring system, which implements pcap filter. > > The requirement is to send probes with a high monitoring rate e.g. 40 msec > and the probe packets have data of 12 bytes. For each packet sent by the > sender the re

[tcpdump-workers] Strange behavior of pcap filter

2006-04-06 Thread J S
Hello, I am developing an active monitoring system, which implements pcap filter. The requirement is to send probes with a high monitoring rate e.g. 40 msec and the probe packets have data of 12 bytes. For each packet sent by the sender the recipient sends a reply packet. I have noticed a stran

Re: [tcpdump-workers] How to use "pcap" on a router ???

2006-04-06 Thread Guy Harris
kashif wrote: I have configured my PC running RedHat Linux 9.0 into a router by turning on the ip_forwarding facility of it. It got TWO LAN cards...and if i run two instances of *pcap* one for each LAN card for capturing packets, it works fineBut i intend writing an application wherein i nee