07-10-2019
Couldn't you take your output, grep for the word 'closed' and then get the top line head -1
9 More Discussions You Might Find Interesting
1. SCO
sco unix 5.0.x, several weeks ago, I add a telnet-like service in inetd.conf, it runs well for 100 network terminals.
But nowdays, the terminals can connect to server successfully after booting machine, but several hours later, can not connect. "netstat -p tcp -a" can NOT find the port in... (1 Reply)
Discussion started by: shark_gao
1 Replies
2. 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
3. Solaris
Hi Everyone,
In my environment, I have few T5220. On the iLOM Management Card, I have both Network and Serial port are cabled, I don't have any issues while I try to connect using Network Management port, but when I try to connect the serial port for the same server which is actually connected... (3 Replies)
Discussion started by: bobby320
3 Replies
4. Shell Programming and Scripting
Hello
I'm beginner in the linux scripting and i would like to get help. I want to create a script that can block one or more Port even see all the TCP port. The ports must be blocked even when starting my machine.
Of course requires a second script which will allow the ports that you want to... (0 Replies)
Discussion started by: houstaf
0 Replies
5. 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
6. 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
7. 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
8. 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
9. AIX
I'll start with I'm not an AIX expert, I inherited a lot of AIX servers to maintain.
My problem is on AIX 7.1 TL4 SP4 environments. I'm running named as a DNS forwarder only to internal DNS servers.
These AIX servers have a customized UDP ephemeral port range to avoid conflicting with the... (0 Replies)
Discussion started by: seanc
0 Replies
RBASH(1) General Commands Manual RBASH(1)
NAME
rbash - restricted bash, see bash(1)
RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a file name containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO
bash(1)
GNU Bash-4.0 2004 Apr 20 RBASH(1)