10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
hi,
i would like to create a bash script that check which port in my Linux server are closed (not in use) from a specific range, port range (3000-3010).
the print output need to be only 1 port, and it will be nice if the output will be saved as a variable or in same file.
my code is:
... (2 Replies)
Discussion started by: yossi
2 Replies
2. Solaris
please find the below o/p for your reference
bash-3.00# fcinfo hba-port
HBA Port WWN: 21000024ff295a34
OS Device Name: /dev/cfg/c2
Manufacturer: QLogic Corp.
Model: 375-3356-02
Firmware Version: 05.03.02
FCode/BIOS Version: BIOS: 2.02; fcode: 2.01;... (3 Replies)
Discussion started by: sb200
3 Replies
3. Red Hat
In my Linux system ephemeral port range is showing different ranges as follows
$ cat /proc/sys/net/ipv4/ip_local_port_range
32768 61000
cat /etc/sysctl.conf | grep net.ipv4.ip_local_port_range
net.ipv4.ip_local_port_range = 9000 65500
Which will be the effective ephemeral port... (5 Replies)
Discussion started by: steephen
5 Replies
4. Programming
Hello, I am writing a program which runs with root privileges, and it creates a child with lowered privileges and has to redirect it's stdout and stderr to a file and then run bash.
The problem is, whenever I read this file, I want to see all of the current output, even when the program is still... (10 Replies)
Discussion started by: madd-games
10 Replies
5. UNIX for Dummies Questions & Answers
I want to limit all *outbound* traffic on eth0 (or all *.*) on port 25 to a specific (allowed) range...
I.E.
192.168.1.5 (local ip) tries to connect to 1.2.3.4:25 (outside real world ip)
It can proceed because 1.2.3.0/24 is the allowed range
Now, 192.168.1.5 (local ip) tries to connect to... (1 Reply)
Discussion started by: holyearth
1 Replies
6. AIX
Hi Guys,
Please could you tell me if it is possible to have a single rule/filter to allow a certain port range instead of a separate rule for each port?
I'm sure it must be possible but I am unable to find the syntax.
Thanks
Chris (4 Replies)
Discussion started by: chrisstevens
4 Replies
7. AIX
May I know what is the TCP/UCP port range for any default AIX NFS? Based on rpcinfo -p, I got the following output:
program vers proto port service
100000 4 udp 111 portmapper
100000 3 udp 111 portmapper
100000 2 udp 111 portmapper
100000 4 ... (4 Replies)
Discussion started by: famasutika
4 Replies
8. UNIX for Advanced & Expert Users
my apps use port 40001; however, for example, firstly, I ftp to other server, it made a high port locally, remote is port 21, unfortunately, it hit my port 40001 and my apps is unable to startup. This chance is very very little, but I hit it. Can resevse my port 40001? otherwise command don't use it (5 Replies)
Discussion started by: goodbid
5 Replies
9. Solaris
Is there a way in solaris 9 to prevent a user to login via ssh, telnet, rlogin, and only be able to su as that user, for example
have DBA joe blow login as jblow, and then su to oracle
BUT
not vice versa
have DBA joe blow login as oralce (6 Replies)
Discussion started by: csaunders
6 Replies
10. UNIX for Advanced & Expert Users
This is for 3 os's, AIX, Solaris, and AIX, didnt want to post three seperate times on the same subject, anyways, I want to force the user MQM to su, i.e. not be able to rlogin/telnet to the box as user MQM, only login as there ID(chris for example) and su to MQM, does anyone know how to do this,... (4 Replies)
Discussion started by: csaunders
4 Replies
CURLOPT_DNS_SERVERS(3) curl_easy_setopt options CURLOPT_DNS_SERVERS(3)
NAME
CURLOPT_DNS_SERVERS - set preferred DNS servers
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_SERVERS, char *servers);
DESCRIPTION
Pass a char * that is the list of DNS servers to be used instead of the system default. The format of the dns servers option is:
host[:port][,host[:port]]...
For example:
192.168.1.100,192.168.1.101,3.4.5.6
The application does not have to keep the string around after setting this option.
DEFAULT
NULL - use system default
PROTOCOLS
All
EXAMPLE
TODO
AVAILABILITY
This option requires that libcurl was built with a resolver backend that supports this operation. The c-ares backend is the only such one.
Added in 7.24.0
RETURN VALUE
Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, CURLE_NOT_BUILT_IN if support was disabled at compile-time,
CURLE_BAD_FUNCTION_ARGUMENT when given an invalid server list, or CURLE_OUT_OF_MEMORY if there was insufficient heap space.
SEE ALSO
CURLOPT_DNS_LOCAL_IP4(3), CURLOPT_DNS_CACHE_TIMEOUT(3),
libcurl 7.54.0 December 21, 2016 CURLOPT_DNS_SERVERS(3)