Fedora :: Gsoap - Limit Or Disable The Ability Of The Program To Open A Port To Start Communicating On FC15
Jul 18, 2011
I'm running Fedora 15, and am trying to run a program that uses gsoap/soapcpp2 2.7.17 to communicate with different parts of the program. As far as I know everything has compiled correctly and I am using the same versions of the required libraries as several working installations. However, every single time the program tries to open a port, the program is unable to do so. This happens no matter what port I specify.
if there is anything in fedora that would limit or disable the ability of the program to open a port to start communicating. I have tried disabling the firewall with no change to the behaviour.
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Jul 7, 2011
I tried all possible solutions for disabling the worst sound ever (BEEP!). I have this problem only when the login screen appears and after I clicked on my account's icon to write my password and login. I tried to disable it (alert sound) from 'sound' in 'system settings' by muting it or even changing the sound to the other options and nothing happened. Then I search for this problem and found a solution that remove the module by executing
Code:
rmmod pcspkr
but I get an error because Module pcspkr does not exist in /proc/modules
so I checked in /etc/modprobe.d/blacklist.conf and it has the following line under sound drivers
Code:
# sound drivers
blacklist snd-pcsp
As I understand, that is the new name of pcspkr and it is blacklisted - how is it still able to play this terrible BBBEEEEPPPP sound at login?
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Mar 5, 2011
I am having trouble with computers communicating on the wireless lan. However, if I ssh into the wireless access point and then ssh into another computer on the wlan, that works fine. The draw backs to that is I am restricted to only ssh and without X forwarding. So what I would like to do is set up ssh port forwarding so that computer2 with vnc server 5900 on the lan will be accessible through 40000 on mycomputer using the wireless router's ssh as the go-between with ssh port forwarding. How can I accomplish that? Every time I read about this, I think I understand it, and but then I must have done something wrong because it's not working the way I thought. I have successfully done ssh port forwarding in the past without using a third computer as a go between. Both the wlan access point/router and computer2 are running an ssh server.
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Jun 21, 2011
I upgraded Sunday evening from FC14 to FC15 using the yum preupgrade method. Services such as httpd, vsftpd, sshd, named and even the VNC server are all running. I can connect via VNC client and get a downgraded gnome desktop, but from the console, I cannot start X or gnome desktop.I have searched many threads over the last day+ and found many references to problems with nVidia drivers - and I have a nVidia adapter. but I am not sure what is next to do and need a lead.
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Aug 20, 2010
How do I set permision for a prog. to open a port? I need to permit Bitpim to open a port when I run it.
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Jun 20, 2009
I am running lmgrd on CentOS5, but it returns Failed to open the TCP port number in the license. The port is 27000, how can I open that port?
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Nov 1, 2010
sudo ssh -L 750:192.168.123.103:873 username@192.168.123.103It does exactly what it's supposed to do, but how do i edit / remove this rule?Is there some config file where i can alter the forwarding? How does it get stored?Im using Ubuntu 10.10Server Edition (allthough i recon it would be pretty much the same across all versions
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Dec 24, 2010
I installed Mepis to a separate partion (shares swap) and now the option to use, originally installed, Ubuntu does not appear at start up. Is there a way get this option back?
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Oct 9, 2009
I just installed TuxGuitar - very cool - and to get the sound to work I had to install Timidity++ as well. Before I start TuxGuitar I have to execute:timidity -iA -Osin a terminal window first, which is kind of a pain to do every time I run TuxGuitar.How do I get this line to execute on startup such that timidity is running when I start up? I tried adding that line to rc.local
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Nov 4, 2010
I need to adjust what exactly ufw LIMIT port# does.I like the fact that the port is getting limited, but ufw overdoes it a bit. Is there a config file somewhere I can edit?
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May 20, 2010
I want to put a bandwidth limit on the 8000 port. The limit not have to be global! It must be per connection! For example if i put a 20kB/s limit on the 8000 port and I have 3 clients connected to the port, i want that each have the 20kB/s. How can I do that? I readed something about TC, but i don`t know how to use it... I`m a little noobie Sorry for my bad english
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Aug 24, 2010
I have ALFA awus036h wireless usb card which uses rtl8187 driver. after connecting it to my fedora13(64) machine and adjusting wicd preferences to enable wlan1 , i get the card connected to my wireless network, but actually cant browse any web site( the browser keep saying : looking up www.......), also PINGing return nothing. i tried handling the card using the built-in driver (kernel 2.6.33.6) and the driver shipped with the card, but both gave me the same result.
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Jan 22, 2010
I found that I can not use the UDP port on FC 12.I new install one FC 12 , but when I use the next command nmap -sU localhost.I found all udp port has been filtered.I don't know how to open the udp ports . for I need use some udp port.I use iptables , but not working. Why ?
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Feb 5, 2010
Im new to RHEL5, but comfortable with linux in general. Im trying to setup a dedicated memcached server for my webservers.
currently our setup is as follows:
a load balancer,
two servers attached to the load balancer
a new server to run dedicated memcached
Ive installed memcached and started the service.
[Code]...
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May 17, 2010
I've searched through the forums and found a few threads that kind of helped, but I'm still pretty lost when it comes to TC. I'm trying to do and also break it down and explain what each part of the command does so that I can learn along the way. What I'm trying to do is limit any connection from source port 6001 to 30KB/s.
I'm currently running a game server and it has no built in bandwidth limiting feature, which means if someone logs in and needs to download the map it destroys my bandwidth for the rest of the servers players. The game server is running on port 6001.
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Jan 11, 2011
I am at a loss how to prevent Denial of Service attacks to port 25 and not block legitimate connections from 2 Barracuda 800(s) and block smart phones such as iPhones/Blackberrys/iPhones that use the server smtp.server.com for email.
Presently for port 25
RH-Firewall-1-INPUT -p tcp -m state --state NEW -m tcp --dport 25 -j ACCEPT
The 2 Barracuda 800(s) make port 25 connections all the time, plus users with smart_phones have the incoming server type:
IMAP
pop.server.com
smtp.server.com
Is there a way to keep Denial of Service attacks from happening with iptables rules without causing blocking to the Barracuda(s) that make constant port 25 connections & smart phones that poll? I was thinking if I allowed the Barracuda(s) in these lines
-s (barracuda)24.xx.xx.xx -d (emailserver)24.00.xx.xx -p tcp -m tcp --dport 25 -m state --state NEW -j ACCEPT
Where the source would be the Barracuda going to the email server. It would be allowed, then I am left with how to allow other connections like Smart_Phones that connect via Port 25. I am thinking if I put rules in place doing connection counts in a minute it would result in errors connecting to the server and people would start complaining. Plus any limiting may result in blocking real traffic. Then would I need to allow the ISP range in the above example to accept port 25, I am still left with how to drop a flood/denial of service attack.
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Sep 5, 2010
How to number of connections for a single ip on port 80 to CentOS 5.5 with iptables? connlimit did not work on CentOS and nginx does not provide a module for that
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Aug 5, 2009
If I forward port 80 to port 3128 for squid with an iptable rule, does port 3128 have to be open on the firewall or is this all routed behind the firewall?
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Apr 17, 2011
I want to open the port 18680 on my remote Fedora 14 machine. I didsudo iptables -I INPUT -p tcp --dport 18680 -m state --state NEW,ESTABLISHED -j ACCEPTsudo iptables -I OUTPUT -p tcp --sport 18680 -m state --state ESTABLISHED -j ACCEPTsudo service iptables saveThe status returned is OK.I have also opened the port on my security group on Amazon. Also, I rebooted the machine.When I use the browser to view the application running at port 18680 the browser cannot connect.
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Feb 25, 2009
I tried to see if my port was open but got a message saying Error: I could not see your service on 58.164.165.88 on port (80) Reason: Connection refused could someone us out here
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Jul 30, 2011
I'm curious is it possible to access your router settings. I'm trying to open up a port. I have done this in my firewall now I need to open up my port through my router. I'm using fedora 15.
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Nov 25, 2010
I am looking to disable my start-up splash screen and shut-down splash screen. I have modified my /etc/grub.conf file by changing:
splashimage=(hd0,0)/grub/splash.xpm.gz
to
#splashimage=(hd0,0)/grub/splash.xpm.gz
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Dec 23, 2010
I'm trying to limit access to port 8443 on our server to 2 specific IP addresses. For some reason, access is still being allowed even though I drop all packets that aren't from the named IP addresses. The default policy is ACCEPT on the INPUT chain and this is how we want to keep it for various reasons I wont get into here. Here's the output from iptables -vnL
[Code]...
Note the actual IP we are using is masked here with 123.123.123.123. Until I can get everything working properly, we're only allowing access from 1 IP instead of 2. We can add the other one once it all works right. I haven't worked with iptables very much. So I'm quite confused about why packets matching the DROP criteria are still being allowed.
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Aug 4, 2011
In Fedora 15, when I plug a USB drive, Nautilus will automatically open and show whats inside of it. I'm working in a project where I have to plug and unplug USB drives many times, and Nautilus opening every time is really annoying. I tried to use gconf-edit and set the keys apps>nautilus>preferences>media_automount and media_automount_open to false, but it didn't work.
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Mar 25, 2010
Fedora
Release 12 (Constantine)
Kernel Linux 2.6.32.9-70.fc12.i1686
GNOME 2.28.2
[Code].....
OK so I installed Razertool but when I try to configure it, it says: There was an error communicating with the device: Operation not permitted You may need to change the permissions of the device (see the README)
and in the GUI it reads: FIrmware Version ?.?? (NO DEVICE) As for other things like CPU and Graphics, how can I confirm these are running properly? My computer seems to lag a bit. As for graphics, everytime I try to enable the desktop effects it errors and says: Accelerated 3D graphics is not available
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Mar 29, 2011
I need a program that will limit download speed per connection. So that each download is limited to 100kbit/s for e,g. I tried trickled, it only limits whole application (and doesn't work with firefox). Also tried pyshaper, doesn't work. Is there such software?
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May 16, 2011
Linux bash inline command to execute a program and limit the resource.As I know, to limit the resource I can use ulimit command.But, the problem is when I set the CPU time limit 1 second, and then I want to execute another program with CPU limit 2s, the ulimit command return an error like this: bash: ulimit: CPU time: cannot modify limit: Operation not permitted and absolutely my program killed in 1 second.So, How can I make the second program running with the CPU time limit 2 seconds?
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Jun 2, 2011
I have already tried trickle and wondershaper. I need a program that can limit the speed of download/upload of an already running program. Similar to the how NetLimiter in Windows limits already running processes. Using Linux.
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Apr 14, 2010
I have sendmail running on my centOS 4.6. My lamp server also runs on it. I want to send mail through php mail function. when i execute php page, which fires the mail function, it takes so much long tim1 say even 1 minute, and at last displays that message sent successfully. Suppose, destination address is [URL].... I did not get any mail there. My server is running in LAN. I checked the status of sendmail, it shows me that it ios running. when i issue "nmap localhost" it shows me that SMTP port 25 is open, but when i issue "nmap myserver" (192.168.1.20 myserver ( written in hostfile)), it does not show that SMTP port is open.
I checked the /var/log/maillog, one person in my previous post advice me to see that. There it shows that message is accepted for delivery...but i do not get any mail in my destination, even not in spam folder. One more confusion is that, in my case my server is in LAN and if I am at all enable to open the SMTP port on it, does i need to open SMTP port on my router (which connects my LAN to internet) also needs to open? I think no, because SMTP is application layer protocol, it will wrap my mail in IP packet, which router just need to forward. am i right?
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Feb 8, 2010
I only began using Linux with the release of FC8. I've upgraded into every new version (upgrade, no clean installs), after the new versions had been out a while. I struggle with command lines, updates, cups and other very cool tools that are only difficult because they have so many options. I'm Windows guy at work, a system admin and db administrator, plus the company expert on Excel. But, all in all, I hate Windows, and I'm loving Fedora, even if I struggle.
This last upgrade really kicked me in the pants. The first thing I noticed was all of my software sources were gone. I did some research around the forum and tried a few things, but it's still not working. Unfortunately, I may have uninstalled Yum in the process, but not rpm. I've tried to re-install the yum packages, but still no luck.
This morning before leaving for work I noticed that a boot log indicated that cups had failed. I went in to restart the service (through gui) and it said it was running. So I stopped the service and re-started. I tried to access port 631 through Firefox and it wouldn't open. I need to check the firewall to see if it's an open port, but beyond that I don't know.
Now I'm wondering if I should just do a clean install. I haven't done this, mainly because I didn't want to hassle with setting up my printer again (although, it's a Brother and they have the drivers and good instructions), and I didn't want to lose any emails that I've received via Thunderbird. The printer is really a non-issue now, as I'll have to set it up anyway. I have a backup of the /usr folder and all the documents. Question is, if I restore the Thunderbird folder after a clean install, would it bring back my email?
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