I'm trying to stop all the services on port 80 by I'm not entirely sure how.Infact, I don't really know what's running on port 80... I tried throwing a netstat -a in a prompt but I don't see port numbers anywhere so I can't figure out which PID to kill.Any ideas on how I can figure out what's running on port 80, and stop it?
View 14 RepliesI am using Fedora12 with latest update, and am using kde4.3.4.
To decrease the memory consumption on one of my system I disabled many services presently only following services are running:
NetworkManager
abrtd
acpid
akmods
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Now I want to stop some default running process like modem-manager, seapplet, ksmserver, krunner and sometime knotify4. I could not locate the initiation point of these services. So that I can manage (start/stop) these services.
On my CentOS 5.4 box I run dns, ssh, and smtp servers. This box also has to be able to resolve and browse websites. So basically it needs iptable rules for
TCP 22 25 80 443
UDP 53
My question is, which of these services work nicely with connection tracking? I'm a little confused about how connection tracking works. For example say this iptables rule for smtp
Code:
iptables -A INPUT -s 0/0 --sport 513:65535 -d $myip --dport 25 -j ACCEPT
versus
Code:
iptables -A INPUT -s 0/0 --sport 513:65535 -d $myip --dport 25 -m state --state NEW,ESTABLISHED -j ACCEPT
So with connection tracking what exactly does it do that my first iptables rule does not do?
Also for centos is that port range correct? 2.6 Linux kernel randomly chooses a port 513-65535 when it connects to an external smtp server or say browses a site.
How can Vsftpd services & Xinetd.d services can be differentiated?
View 5 Replies View RelatedBoot of a new minimal system hangs on "Stopping save kernel messages" or "stopping system v runlevel compatibility". I have ubuntu minimal iso x86_64 from usb stick created with unetbootin (don't have a cd drive on the machine in question), and after that I didsudo aptitude install gnome-terminal network-manager-gnome gdm geditsudo rebootnever got a system back. Annoyingly I can't boot into the recovery mode either, and it seems the keyboard is only semi-responsive (i.e. many dead keys when at the grub menu).qualms about reinstalling, but I've done this a few times and ended up at the same place every time.
View 6 Replies View RelatedIn December I finally filled up my root partition and broke Suse 11.1. I therefore resized my partitions and installed Suse 11.3 on /root. I didn't not touch my /home partition.
I notice that when I leave my machine and come back the screen has locked. I have tried to turn off the screensaver, but it hasn't worked. I have Googled, but unfortunately the screen shots don't look like what I have and the instructions to stop this do not seem to match what I am seeing on the screen.
Is there a way to do this via the command line?
So I want to get mount/umount option under right click services menu. I went to Dolphin -> Settings -> Configure Dolphin -> Services -> Download New Services and from there I installed KDE CDEmu Emulator and MountISO. But neither of them is showing up in actual context menu. Neither in Dolphin -> Settings -> Configure Dolphin -> Services for that matter. I tried to install them as normal user and as a root. I went to have a peak in /usr/share/kde4/services/ServiceMenus/ but they aren't there as well... It's just me or lots of things seems to be not quite working in 11.3?
View 9 Replies View RelatedI want to launch a gnome-terminal with a korn shell, and I want to specify in advance a command to execute, and then hand control back over to ksh. ex.
Code:
gnome-terminal --execute ksh -ic ls
I expect that to run ksh, do an 'ls' for example, and then give a prompt. I thought the -i switch (for interactive) meant that the shell would resume control, but this doesn't happen. The window just closes quicker than I can see what was output.
Client is running Oracle VM Server 2.2.1 (kernel 2.6.18-128.2.1.4.37.el5xen). Storage is a NetApp 3210 (NFS configured to use TCP). Iptables on client has udp and tcp ports 111, 2049 and the NFS server ports opened. Info retrieved using: rpcinfo -p NetApp When trying a manual mount.
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stopping iptables also works (I can manually mount the share without using proto=tcp). Is the mounting process somehow trying to negotiate first using udp which the Netapp doesn't respond and hence it fails by timing out? Can I configure iptables such that I don't have to use the proto=tcp option? Or is there another configuration file I can tweak so that I don't have to use the proto=tcp option?
I have report running through a Unix server. In this it takes out certain data of the database and sends it to each of the user's mailbox. But if some user replies or has set his out of office reply then this server keeps on sending h the same mail again and again. I need stop it.
View 5 Replies View RelatedPossibly related to this previous question, I would like to be able to run a task for a specified amount of time, then stop/kill it, then start it again. Specifically, I run the Folding@Home application on my Linux workstation. Periodically, it will have trouble logging-in to the home server, and will sit idle for a long time, but not release memory/resources it has claimed (yes, I realize this is likely a bug in the tool, but I can't fix that currently). Typically just the act of killing and starting the tool will allow it to check-in again. So, I would like to be able to run something like:
run_for <time> ./fah6
Does such a tool exist, or should I write a wrapper than nukes the fah6 client after, say, a week and restart it?
I have just installed Ubuntu 10.04 and it works fine. Next, I attempted to install Apache 2.2.16 server on the machine. I was able to get Apache installed but I cant't get it to start. The command I used to get it to start is "apachectl -k start" and got the response "command not found". Then I used the absolute path which is "/home/Administrator/Downloads/apache/bin/apachectl -k start" and got the response"httpd: could not reliably determine ther server's fully qualified domain name, using 127.0.1.1 for ServerName(13)Permission denied: make_sock: could not bind to address 0.0.0.0:80.no listening to sockets available, shutting down". Please advise me on what to do. My eyes hurt from looking at the screen for so long trying different options and reading almost all the apache install instructions that exists. Just ready to have it up and running.
View 7 Replies View RelatedVERY new to linux, erm but I have an issue that needs solving!I recently moved to university, where their network blocks sftp port 22, this means that I cannot connect to my FTP server which is running a version of linux.Now I've got this ftp server connected to a seedbox and it was created using the following walk through..Code:I have written this guide for a friend, but I though it would be useful for others as well.
There are several guides floating around, but I found that most always cock up in some way. This one is tried and tested to work on Debian Etch (on an OVH rps, but should apply to most servers).If there is a new stable release of rtorrent/libtorrent then I will update this guide to show you how to update it (without reinstalling the whole server).
At the bottom there are also instructions to install ftp access & some network monitoring software.Basically, I would really like someone to be able to construct the commands on how to change the listen port for sftp connection on linux or add another port to the list that Linux would use so that I could put in through putty.
I tried to make "ssh tunneling", but failed and got this message.
Quote:
Administrator@windstory-PC /
$ ssh -R 7869:localhost:7869 windowsstudy@192.168.0.4
windowsstudy@192.168.0.4's password:
Warning: remote port forwarding failed for listen port 7869 Last login: Wed Jul 21 01:56:04 2010 from 192.168.0.2 -bash-3.2$
1. system environment
192.168.0.2 - windows 7 + copssh
192.168.0.4 - centos 5.4 x86 + openssh
2. Guide for setting "ssh tunneling"
[URL]
3. Added this to sshd.conf
Quote:
AllowTcpForwarding yes
4. "netstat -na|grep 7869" at 192.168.0.4
Quote:
[root:maestro:~]# netstat -na|grep 7869
tcp 0 0 0.0.0.0:7869 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:7869 127.0.0.1:53539 ESTABLISHED
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5. result of "ssh -vvv -R 7869:localhost:7869 windowsstudy@192.168.0.4"
Quote:
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
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6. I added 7869 for telnet service as follow;
Quote:
mytelnet 7869/tcp # My Telnet server
I can see this phenomenon on 2 different systems running 11.3 .In simple mode and also in expert mode.
View 9 Replies View RelatedI want to do a simple port redirect, i.e. whatever comes trough whatever interface on port AAAA will get redirected to port BBBBI thought that iptables -t nat -I PREROUTING --source 0/0 --destination 0/0 -p tcp --dport AAAA -j REDIRECT --to-ports BBBBhowever it doesn't work, e.g. nc -v -w2 -z localhost AAAA gives:
nc: connect to localhost port AAAA (tcp) failed: Connection refused
while
nc -v -w2 -z localhost BBBB
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I have a mail server i need it to send message via port 587 not port 25, i make some changes to my postfix server which i use and it is already successed making a telnet to 587 port like it :
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I would like to know how would i disable service which helps mounting of removable devices automatically?I dont want to disable mounting but i would like to disable automatic mounting of devices.I would like to do this as security major on one of our production server.
View 9 Replies View RelatedI want to configure following serivices on non-standard (or not well-known)port uisng RED-HAT LINUX INETD: TELNET, SSH, SNMP, FTP
1) Is there any issue/limitation doing this?
2) Any caveat or peculiarities related to any of the services?
i have a server which i dont know what was installed on it, it was sent for me to find out.
View 5 Replies View Relatedi am using rhel 5 in my pc how i can enable the net connectivity on my pc
View 1 Replies View RelatedIn red Hat linux i want to implement NIS server. For that purpose i check the current running services under (Server settings,Services) but NIS was not listed in it.please let me know is there different name of NIS service or i have to install it separately
View 7 Replies View Relatedchecking of services in Nagios. You all know the check_[service] command right? In the commands.cfg and windows.cfg. To check for the different types of services/ports, we just replace the [service] in check_[service] with the name of the port? I only know of check_http, check_ssh, check_ftp etc. Some ports like Finger, snmp etc, all these we also write it as 'check_finger', 'check_snmp'? 2) And, if that is the case, do we have to install additional plugins to monitor the ports defined earlier? 3) Lastly, if i want to monitor finger,snmp in windows server, would i need to download any software?
View 2 Replies View Relatedi know that there is already a command for it but it comes out with a lot of letters that makes it hard to find the services that are runningi'm talking about services like DNS, APACHE, DHCP, SAMBA, SSH etcis there a command that will list these services and related services that are running instead of showing a bunch of jumbled and lettered mess thats hard to comprehend
View 6 Replies View Relatedhow can i find all services are installed or not in redhat linux.
View 1 Replies View RelatedIn order to preserve resources and to have more secure machine I want to disable services which are of no use to me. But being relatively new to Linux I want to make sure I'm disabling those really unnecessary and that my actions wont have a negative impact on overall system health / usability.code...
View 13 Replies View RelatedAccording to security manual only DNS, files, or LDAP should be allowed in nsswitch file however it seems like i have many other services configured in nsswitch files.
below are the content from nsswitch file. What services can be removed considering the system stability.
Code:
passwd: files
shadow: files
group: files
hosts: files dns
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I have been trying to install the KDE desktop via terminal services, but am failing because I have forgotten the syntax. Could some one please help? I know I did this for Gnome before, so I think it would be just as easy to install KDE with all it's dependencies.I am running Mandriva One Spring 2009 on my laptop and Mandriva Free 2010 on my desktop. I want to install KDE environment on both.
View 3 Replies View RelatedWe have our web site hosted by Go daddy and they provide us with the mail service as well. But there are a lot of constraints with the mail service with regards to the number of mail boxes, size per box, relays per user and so on.To avoid this, we are looking at other options. One is to have our own mail server but it will require a lot of infrastructure and expertise. But Amazon web services looks nice. They have infrastructure needed and all. One thing on my mind is the reverse look up of the mail servers. They wont be associated with the domain as both would be on different hostings. I am open to both windows exchange server as well as Linux server. Has anyone done this before or has any idea about it? I have gone through some of the threads in their forum and there are a lot of mixed views about it.And main concern everyone views is the reverse lookup. This could lead to all the mails sent from my server tagged as spam at the recipient end.I could not make out in which forum to write and hence in newbie. If this is enough about networking or server please move it.
View 9 Replies View RelatedIn system monitor, there are numerous processes. Some such as metacity and nautilus are using 12-21 mb memory. Since my server is a 512 mb computer, which services or processes can I safely remove or end ?
View 14 Replies View Related