tcpdump mailing list archives
Re: Proposed new pcap format
From: "Loris Degioanni" <loris () netgroup-serv polito it>
Date: Tue, 13 Apr 2004 11:22:38 -0700
Hi,
In some email I received from Loris Degioanni, sie wrote: [ Charset ISO-8859-1 unsupported, converting... ]Ok, I'm going to add a 8-byte hash option for the packet block. Can
anybody
suggest the hashing algorithm?You obviously sent this before reading another email I sent on this. Today, some people might want MD-5, others SHA-1 and in the future, there may be other hashing algorithms that are better to use. And there are times when we might want it off (algorithm 0, for example.) As such, I believe this option should be a (type,value) pair, if we can agree that the hash value in the option header is a hash over the entire record returned by the kernel (with the value of the hash set to 0.) And yes, the kernel computes the hash.
I agree, but since we a are trying to define a standard, we probably want to define a default hashing method. The main reason is that I don't think we'll be able to include in libpcap (and possibly the capture drivers) the support for 6 or 7 different methods, so maybe we could choose one. Loris
Darren
- This is the tcpdump-workers list. Visit https://lists.sandelman.ca/ to unsubscribe.
Current thread:
- Re: Proposed new pcap format, (continued)
- Re: Proposed new pcap format Ronnie Sahlberg (Apr 13)
- Re: Proposed new pcap format Ronnie Sahlberg (Apr 09)
- Re: Proposed new pcap format Guy Harris (Apr 09)
- Re: Proposed new pcap format Loris Degioanni (Apr 11)
- Re: Proposed new pcap format Darren Reed (Apr 12)
- Re: Proposed new pcap format Michael Richardson (Apr 12)
- Re: Proposed new pcap format Ronnie Sahlberg (Apr 13)
- Re: Proposed new pcap format Darren Reed (Apr 13)
- Re: Proposed new pcap format Guy Harris (Apr 13)
- Re: Proposed new pcap format Michael Richardson (Apr 16)
- Re: Proposed new pcap format Darren Reed (Apr 12)
- Re: Proposed new pcap format Loris Degioanni (Apr 13)
- Re: Proposed new pcap format Darren Reed (Apr 13)
- Re: Proposed new pcap format Guy Harris (Apr 13)
- Re: Proposed new pcap format Jefferson Ogata (Apr 13)
- Re: Proposed new pcap format Jefferson Ogata (Apr 13)
- Re: Proposed new pcap format Stephen Donnelly (Apr 13)
- Re: Proposed new pcap format Fulvio Risso (Apr 14)
- Re: Proposed new pcap format Jefferson Ogata (Apr 14)
- Re: Proposed new pcap format Stephen Donnelly (Apr 14)
- Re: Proposed new pcap format Jefferson Ogata (Apr 14)
- Re: Proposed new pcap format Ronnie Sahlberg (Apr 14)