Re: [CentOS] packet traversal

2013-12-06 Thread Andrew Holway
On 6 December 2013 19:25, Robert Clove wrote: > Hi All > > I don't know whether i am asking on a correct list or not i have a query > that how to know that what system call are called when packet enters the > system or when we send a packet from a system? These slides might help you with your goo

Re: [CentOS] packet traversal

2013-12-06 Thread Robert Clove
Tcpdump won"t tell the system calls On Saturday, December 7, 2013, wrote: > Robert Clove wrote: > > Hi All > > > > I don't know whether i am asking on a correct list or not i have a query > > that how to know that what system call are called when packet enters the > > system or when we send a pac

Re: [CentOS] packet traversal

2013-12-06 Thread m . roth
John R Pierce wrote: > On 12/6/2013 11:28 AM, m.r...@5-cent.us wrote: >>> I don't know whether i am asking on a correct list or not i have a >>> query that how to know that what system call are called when packet enters >>> the system or when we send a packet from a system? >> Hi, there. Sounds li

Re: [CentOS] packet traversal

2013-12-06 Thread John R Pierce
On 12/6/2013 11:34 AM, m.r...@5-cent.us wrote: > If you know the process, you could use strace. that will only show user mode calls, which are basically select() and read(). as I said, the packet transversal is all done in the network related kernel modules, under the covers where strace can't

Re: [CentOS] packet traversal

2013-12-06 Thread John R Pierce
On 12/6/2013 11:28 AM, m.r...@5-cent.us wrote: >> I don't know whether i am asking on a correct list or not i have a query >> >that how to know that what system call are called when packet enters the >> >system or when we send a packet from a system? > Hi, there. Sounds like you want to do a tcpdum

Re: [CentOS] packet traversal

2013-12-06 Thread Wes James
On Fri, Dec 6, 2013 at 12:25 PM, Robert Clove wrote: > Hi All > > I don't know whether i am asking on a correct list or not i have a query > that how to know that what system call are called when packet enters the > system or when we send a packet from a system? > > Thanks > This link might hel

Re: [CentOS] packet traversal

2013-12-06 Thread m . roth
Robert Clove wrote: > On Saturday, December 7, 2013, wrote: >> Robert Clove wrote: >> > >> > I don't know whether i am asking on a correct list or not i have a >> > query that how to know that what system call are called when packet enters >> > the system or when we send a packet from a system? >>

Re: [CentOS] packet traversal

2013-12-06 Thread Robert Clove
Tcpdump won"t tell the system calls On Saturday, December 7, 2013, wrote: > Robert Clove wrote: > > Hi All > > > > I don't know whether i am asking on a correct list or not i have a query > > that how to know that what system call are called when packet enters the > > system or when we send a pac

Re: [CentOS] packet traversal

2013-12-06 Thread m . roth
Robert Clove wrote: > Hi All > > I don't know whether i am asking on a correct list or not i have a query > that how to know that what system call are called when packet enters the > system or when we send a packet from a system? Hi, there. Sounds like you want to do a tcpdump, or some such, on et

[CentOS] packet traversal

2013-12-06 Thread Robert Clove
Hi All I don't know whether i am asking on a correct list or not i have a query that how to know that what system call are called when packet enters the system or when we send a packet from a system? Thanks ___ CentOS mailing list CentOS@centos.org http