07-15-2003
Networking sysadmin/blocking/IM
What's the latest talk about instant messaging services in teh workplace, regarding blocking it, shutting off ports, etc? Is there a forum somewhere for this? Can't you shut down ports on linux or unix for IM services?
7 More Discussions You Might Find Interesting
1. News, Links, Events and Announcements
We have Labour day, Secretary Day Etc. But there is another day upcoming, which is System Administrator Day. (System Administrator Appreciation Day Friday - July 26th, 2002)
http://www.sysadminday.com/
" Nice to hear that all our hardworks are getting noticed "
:cool: (2 Replies)
Discussion started by: killerserv
2 Replies
2. UNIX for Dummies Questions & Answers
Is there a way, as sysadmin, to put out system msgs, ie scheduled downtime, backup info, etc, whenever users log in? (5 Replies)
Discussion started by: kymberm
5 Replies
3. News, Links, Events and Announcements
Hi All,
I just joined this forum, and I think its great!
I wanted to let you know in honor of Systems Administrator Appreciation Day (which is next Friday, as you probably know), I'm organizing a meetup in New York City to celebrate.
I've made a page with more information here: ... (0 Replies)
Discussion started by: MPSimmons
0 Replies
4. What is on Your Mind?
A big
Thank You to the admins of unix.com, for keeping the platform of a great community running smoothly and error-free.
In case you don't know what I'm talking about: SysAdmin Appreciation Day (5 Replies)
Discussion started by: pludi
5 Replies
5. Solaris
Hello all
I recently installed a fresh copy of Solaris.
I noticed that /etc/passwd does not contain an entry for sysadmin Group #14.
Why isnt it there? Other websites state that by default it should be there !
Help!
Regards,
Junaid
---------- Post updated at 01:04 AM ----------... (1 Reply)
Discussion started by: Junaid Subhani
1 Replies
6. AIX
Please i searching a book
which covering system administration of aix7 or 6
:lvm,virtualization,fs,etc
Ebook and amazon ok.
Do you know something good?
Thanks (1 Reply)
Discussion started by: Linusolaradm1
1 Replies
7. Programming
among the below socket programming api's, please let me know which are blocking and non-blocking.
socket
accept
bind
listen
write
read
close (2 Replies)
Discussion started by: VSSajjan
2 Replies
LEARN ABOUT MOJAVE
pcap_getnonblock
PCAP_SETNONBLOCK(3PCAP) PCAP_SETNONBLOCK(3PCAP)
NAME
pcap_setnonblock, pcap_getnonblock - set or get the state of non-blocking mode on a capture device
SYNOPSIS
#include <pcap/pcap.h>
char errbuf[PCAP_ERRBUF_SIZE];
int pcap_setnonblock(pcap_t *p, int nonblock, char *errbuf);
int pcap_getnonblock(pcap_t *p, char *errbuf);
DESCRIPTION
pcap_setnonblock() puts a capture handle into ``non-blocking'' mode, or takes it out of ``non-blocking'' mode, depending on whether the
nonblock argument is non-zero or zero. It has no effect on ``savefiles''. If there is an error, -1 is returned and errbuf is filled in
with an appropriate error message; otherwise, 0 is returned. In ``non-blocking'' mode, an attempt to read from the capture descriptor with
pcap_dispatch() will, if no packets are currently available to be read, return 0 immediately rather than blocking waiting for packets to
arrive. pcap_loop() and pcap_next() will not work in ``non-blocking'' mode.
When first activated with pcap_activate() or opened with pcap_open_live() , a capture handle is not in ``non-blocking mode''; a call to
pcap_setnonblock() is required in order to put it into ``non-blocking'' mode.
RETURN VALUE
pcap_getnonblock() returns the current ``non-blocking'' state of the capture descriptor; it always returns 0 on ``savefiles''. If there is
an error, -1 is returned and errbuf is filled in with an appropriate error message.
errbuf is assumed to be able to hold at least PCAP_ERRBUF_SIZE chars.
SEE ALSO
pcap(3PCAP), pcap_loop(3PCAP), pcap_next_ex(3PCAP), pcap_geterr(3PCAP)
18 October 2014 PCAP_SETNONBLOCK(3PCAP)