With no meaning to be offensive or rude, but :"I was recently assigned to be network administrator where I work" - the network admins I know have at least two certifications and many years of studying, practicing, etc. Being a netadmin is a bit different from being sysadmin or a programmer, so my point is that this reassignment doesn't speak good for your employer. But since you're in the jam already, let's try to help you.
You say that you can't get utorrent to work, usually torrent clients require some ports opened for P2P communication. There are lot of devices mentioned in your post - do you have access to all of them, for example to check any ACLs, firewalls ? Start with a simple telnet session probe to the destination IP, as in :
- check the response and let us know, certainly, replace the respective IP address and port number. For port scanning, you can consider using nmap.
hi all
1) how to determine available ports in a box (solaris)
do i have to go for a netstat on all the ports?
2) how to block a particular port for a particular type of connection.
Any help would be greatly appreciated
Thanks (7 Replies)
Hi folks!
We have SCO Open System V 5.0.5 here.
When I type "netstat -n" I found a line mentioning a conection at the port 1025, as follows:
tcp 0 0 quartzo.1025 200-203-8-90.csl.aas ESTABLISHED
Here we use only conections thru ports 22,23 and 25. I would like to... (0 Replies)
Hello,
I have a script where I get the full directory path of the script being executed:
BASE=$0
echo "BASE:" $BASE
The output looks like this:
BASE: /webapps/appsdev/ACURA/rlz/oses3.sh
I'd like to truncate the shell name, leaving just the directory path. The directory path can be... (2 Replies)
I got the following code, it partially works. Can someone tell me why it partially doenst work?
#!/bin/sh
file=$1
if
then
echo "File is a directory"
else
echo "File is not a directory!"
fi
heres the output:
philip@philip-laptop:~/Desktop$ sh exFive.sh test.java
File is... (4 Replies)
Hi guys
I have a bunch of x4100's x4140's etc with solaris 10 update4 running on them but I suspect that when a lot of these boxes were originally built, the jumpstart process used an update2 miniroot, now as far as i understand it, the miniroot used at jumpstart is the miniroot that stays on... (1 Reply)
Hi,
I want to block all outgoing connection ( the IMAP ) to my exchnage . I have to do it in my solaris server; from solaris host no outgoing connection can be made to the imap server.
Please help me to configure that.
I am new in solaris.
Kind regards,
Akhtar (2 Replies)
Hi,
I went to a computer store and the salesman sold me a SATA cable and told me that all SATA cables are the same. Another salesman at a different store told me a cable rated for SATA 2, which I bought, MIGHT work as well as one rate for SATA 3 but it is not guaranteed. I decided to run a... (3 Replies)
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 XFREE86
services
SERVICES(5) Linux Programmer's Manual SERVICES(5)NAME
services - Internet network services list
DESCRIPTION
services is a plain ASCII file providing a mapping between human-friendly textual names for internet services, and their underlying
assigned port numbers and protocol types. Every networking program should look into this file to get the port number (and protocol) for
its service. The C library routines getservent(3), getservbyname(3), getservbyport(3), setservent(3), and endservent(3) support querying
this file from programs.
Port numbers are assigned by the IANA (Internet Assigned Numbers Authority), and their current policy is to assign both TCP and UDP proto-
cols when assigning a port number. Therefore, most entries will have two entries, even for TCP-only services.
Port numbers below 1024 (so-called "low numbered" ports) can be bound to only by root (see bind(2), tcp(7), and udp(7)). This is so
clients connecting to low numbered ports can trust that the service running on the port is the standard implementation, and not a rogue
service run by a user of the machine. Well-known port numbers specified by the IANA are normally located in this root-only space.
The presence of an entry for a service in the services file does not necessarily mean that the service is currently running on the machine.
See inetd.conf(5) for the configuration of Internet services offered. Note that not all networking services are started by inetd(8), and
so won't appear in inetd.conf(5). In particular, news (NNTP) and mail (SMTP) servers are often initialized from the system boot scripts.
The location of the services file is defined by _PATH_SERVICES in <netdb.h>. This is usually set to /etc/services.
Each line describes one service, and is of the form:
service-name port/protocol [aliases ...]
where:
service-name
is the friendly name the service is known by and looked up under. It is case sensitive. Often, the client program is named
after the service-name.
port is the port number (in decimal) to use for this service.
protocol is the type of protocol to be used. This field should match an entry in the protocols(5) file. Typical values include tcp and
udp.
aliases is an optional space or tab separated list of other names for this service. Again, the names are case sensitive.
Either spaces or tabs may be used to separate the fields.
Comments are started by the hash sign (#) and continue until the end of the line. Blank lines are skipped.
The service-name should begin in the first column of the file, since leading spaces are not stripped. service-names can be any printable
characters excluding space and tab. However, a conservative choice of characters should be used to minimize compatibility problems. For
example, a-z, 0-9, and hyphen (-) would seem a sensible choice.
Lines not matching this format should not be present in the file. (Currently, they are silently skipped by getservent(3), getservby-
name(3), and getservbyport(3). However, this behavior should not be relied on.)
This file might be distributed over a network using a network-wide naming service like Yellow Pages/NIS or BIND/Hesiod.
A sample services file might look like this:
netstat 15/tcp
qotd 17/tcp quote
msp 18/tcp # message send protocol
msp 18/udp # message send protocol
chargen 19/tcp ttytst source
chargen 19/udp ttytst source
ftp 21/tcp
# 22 - unassigned
telnet 23/tcp
FILES
/etc/services
The Internet network services list
<netdb.h>
Definition of _PATH_SERVICES
SEE ALSO listen(2), endservent(3), getservbyname(3), getservbyport(3), getservent(3), setservent(3), inetd.conf(5), protocols(5), inetd(8)
Assigned Numbers RFC, most recently RFC 1700, (AKA STD0002).
COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
Linux 2010-05-22 SERVICES(5)