OpenSUSE Network :: 11.4, CUPS, And The Firewall?
May 25, 2011
1. Under openSUSE 11.2, I allowed printer sharing through CUPS by setting the Firewall to Allow Services of CUPS in the External Zone section. I don't see the CUPS option in the Allow Services of the Firewall under 11.4, any zone. Is my system missing something?2. If I turn off the Firewall, the client computer can see the printers, even get the broadcasted names. If I put port 631 in TCP of the Advanced setting of the External Zone, the client computer can see the printer too, but I know I read somewhere that putting 631 in the External Zone is basically allowing printer requests from the entire internet.
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Feb 24, 2010
I have a printer configured on my Ubuntu server using CUPS amd made it available to the local network. The printer is recognized on my other Ubuntu machine without any problems.
But on my Suse laptop, the printer is not recognized. Using the YaST printer Configuations, I choose the option "Recieve Printer Information from Remote CUPS servers. But no printer is found.But... when I choose Do All Yout Printing Directly via One Remote CUPS server and enter the correct IP address (192.168.1.100), the printer is found andI am sure the printer info is broadcasted because it shows up on my second Ubuntu PC. But why is it not recognized by default on my Suse machine
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Mar 25, 2011
I suspect this is an initial configuration bug. All firewall logs seem to be going to all
three files. That causes a lot of clutter in the log files, and makes it difficult to see whether there are any serious problems being logged.
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Apr 7, 2011
I want some advice for making my system more secure. I want deactivate any network connection that is unnecessary. Only my browser and the update ability of zypper should have access to the internet. On windows there are personal firewalls.
How can I block internetaccess for all other programmes on openSUSE?
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Jul 26, 2010
Samba is working correctly if Susefirewall2 is off. I have added Samba client and Samba Services for extern access but samba is not working when firewall is now on. Which services should I also add ?
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Oct 27, 2010
I have a CUPS server with several end users. The problem is that the printer stops printing if someone trys to print in letter size. (You have to insert letter paper or abort the print job on the printer.)
No, I'm looking for a way to force printing jobs to A4 paper size.
how to do this? Maybe with custom cups filters, but I don't know how this is done.
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Jan 10, 2011
Ok have setup my printer under suse 11.3 just fine and printing perfectly, and have added the printer to a windows 7 client, but had to get the disk to install the windows driver. Is there any way that i can put the windows driver on the linux machine so that when i go to a windows client and want to add the printer, i can just connect to the printer and the windows driver will be installed over the network like it does with windows servers?
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Aug 5, 2010
I have a HP P1005, which is connected to my desktop computer. I have it configured using hp-setup and set it to share across the network. However no matter what I do on an other computer connected to the network I'm unable to detect the printer. With OS 11.2 it all worked smoothly and practically out of the box. Only need was to add CUPS as an allowed service. This option is taken out, apparently it posed a security risk beats me if you only allowed local traffic. In order to open up the port I added in the internal and external zone the following: code...
Still the printer is not detected. If I turn the firewall off on both machines, no printer. If I try to ping it from the host machine it asks whether or not I enabled the firewall (which is turned off!!).
cupsd is running on the server printer. Localhost:631 is correctly configured and printing from my desktop works fine.
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Jul 6, 2010
I'm trying to setup a cups printing server, but I want the default admin to not be root. Google has given me a couple hints and the cups administration page a little further but I'm now stuck at the end.What I want is a user called admin who belongs to the group printadmin as cups server administrator.What I have done1) I have created a local user called admin user yast user interface , and a group called printadmin. Added admin to the group printadmin2) I changed the line in /etc/cups/cupsd.conf.SystemGroup sys roottoSystemGroup printadmin 3) Changed all instances of of Authtype from Basic to Digest (Allows me to have a file called passwd.md5 in /etc/cups/ with the name of the allowed cups admins inside)4) Ran the following command to create and add admin.Code:lppasswd -a -g printadmin dmin This is what I receive after running the commandlppasswd -a -g printadmin administratorEnter password:Enter password again:lppasswd: Die Kennwortdatei wird verwendet!
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Jul 20, 2010
I have been using Opensuse since 11.0, and I never had any problems with the setup of CUPS printing (university based). Now for the first time, after many months of flawless printing using 11.2, after installing 11.3 the printing has stopped working. I use the same method: Print via print server machine -> CUPS server (IPP) and I test the connection. In my 11.2 it shows "OK", in 11.3 (I also tried with firewall off) I am getting the following (I have substituted the actual values with xxx for privacy).
[Code]...
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Sep 21, 2010
I want to setup my Epson Stylus (515W)-A letter before the 5 but not sure what. Basically when I open CUPS I click on add on new printer, I enter add printer but then the page says access denied. Also this is a network printer.
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Mar 29, 2010
I am trying to add a custom allow rule in the firewall for a range of IPs from 74.201.102.0 - 74.201.103.255, what exactly am I supposed to enter in the source box? I believe I have to add two separate rules for 102 and 103, and I put /24 at the end of both, is this correct to get the whole range of IPs?
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Jan 11, 2010
the remote printer appears in cups but if I try to do a test page i get a page not found error. it even says ready under yast printers.it is set up on a remote desktop using cups
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Mar 29, 2010
switched recently to 11.2 and it works fine for me as workstation I want to set up a router separating a part of the network and also acting as a firewall/proxy... Configured 2 Ethernet Interfaces, checked Ip forwarding in Yast but it does not forward the packets from the "internal" to the "external" network. Hovewer after I set up my router as default for machines on internal network I can ping the external interface but no adress on external network (particularly the one of the default router) !!! From the router I can reach both networks and the net via default gateway on external. Tried to:
a) switch firewall completely off
b) iptables -P FORWARD ACCEPT
c) masquarading internal adresses to the external network
my interfaces configuration looks like:
eth0 Link encap:Ethernet HWaddr 00:13:D4:E3:A2:7B
inet addr:192.168.1.34 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::213:d4ff:fee3:a27b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[Code].....
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May 19, 2010
We have reason to ask this of you following some strange firewall behaviour - But don't panic If you use openSUSE 11.2 and you think: Your Firewall should be running You are not sure but think it should be check and report back here.
This is how to check:
Go to Yast > Security and Users > Firewall
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May 27, 2010
I did a shields up test and it told me that 1056 ports were stealth but that my pc responded to ping and was visible on the net. How do i fix this?
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Jul 13, 2010
I can't get my openvpn work if the firewall is on , and I also don't see any option to allow openvpn service in firewall allow service.
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Jul 24, 2010
I'm trying to get OpenMPI (a parallel programming library) working on my home system. I have just two machines on it now, t61 and quad, connected through a router. (Which is also connected to cable modem for internet.) I can ssh between the machnes, mount directories with NFS, etc. However, I just can't get the OpenMPI to run. The OpenMPI message board suggested that the most probable cause is that the firewall is blocking TCP. I don't know how to tell if that's the problem, and can't find any manual for the SuSE firewall, while the various Wikis &c that pop up in a search don't provide any information that addresses my problem.
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Aug 19, 2010
Ok here's my setup :
SuSE 10.0 X86 32 acting as my internet gateway and firewall.
eth0 is my internal interface network 192.168.0.0/24 IP 192.168.0.254 dsl0 is my internet connection and is a single ip PtP connection to my ISP.
My internal network is masquaraded onto the external network.
I run an smtp server on my gateway box that I need to be accessable to both the internal and external networks.
However I want to prevent machines on the internal network from establishing connections to external smtp servers, but still alow them to connect to the smtp server on the gateway to send email.
NOTE I do not want to force attempts to connect to [URL] 25 to be re-directed to my internal server I just want to drop or reject the connection.
The firewall up until now has just been configured through YaST, but am not afraid to edit script files if needed
The reason for doing this it to prevent spambots from being able to send through my isp, I keep my own machines clean but sometimes get asked to disinfect machines for other people (family members etc), where I need to connect to the outside world to get updates/virus defs etc, but don't want them spamming from my network.
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Aug 26, 2010
can I deny the access to my server for a specific OS? I have one PC which I want to give it acces from winxp, but if it's boot into ubuntu I want to deny all access to my server, same IP, same ethernet card
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Sep 8, 2010
I've setup vnc over ssh tunnelling however the Suse firewall seems to be blocking it. On the local host I have this in ~/.ssh/config:LocalForward localhost:5900 remotehost.com:5900 The problem is that this only works when I either disable the firewall or add an exception for VNC. Both of these actions defeat the whole purpose of ssh tunnelling since they leave my VNC port open to the outside world (very insecure).
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Oct 22, 2010
I'm in the situation where I'm trying to create 2 private networks using ESX server, all behind a NAT router (static ips are used). I used an openSuse11 vm as a router and was able to configure it so that a machine on one private network was able to access the public network. The problem I have now it that I need to be able to access a machine on the private network from the public network using a different set of IP's.
So if a machine in the private network has an IP of 10.1.0.222 I should be able to ping it using 10.99.0.222 or some other IP. I have never done this before and after reading up on iptables and linux routing I feel more confused than before. Is it possible to add IPs to eth0 (public) and have them mapped to machines on a private network eth1 or eth
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Mar 5, 2011
I'm looking forward to the release of openSUSE 11.4, which I'm looking to install as an Internet facing gateway on a mini-ITX machine with 2 Ethernet cards. As such I've been reading up on the YaST Firewall trying to find out to configure it, and there's one thing I'd like to be able to do: 'stealth' all the firewall ports.
In other words, if someone were to hypothetically do a port scan of my external IP address, I would rather they not know whether any of the ports on my gateway are open or closed, so instead of replying with the status of those ports the packets get dropped. I've been able to do this with a product called Astaro Security Gateway, which I currently have installed on a second hand Dell Optiplex machine, but I am now looking into the possibility of installing this as a virtual machine inside an openSUSE 11.4 host (extra level of security) and would like the same functionality for the host OS.
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Mar 11, 2011
How I can refuse an outgoing connection on opensuse firewall by default outbound policy is permissive, and the p2p I explicitly deny an outgoing, according to protocol, remote port and local port.
But I can add rules as how to run opensuse firewall rules are permissive only for inbound traffic and so I can not specifically deny an outgoing connection.
Before using fwbuilder is very powerful and configurable but now I'm with suse for convenience but want to know if you can do what I want, if not I will have to use fwbuilder.
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May 25, 2011
I have done a new install of 11.4 and as with previous versions, I have to go to YAST2 and disable the firewall before I have internet and local network access. Finally I must find out how to do this correctly.
How to I change the default firewall to allow me internet and local network access without disabling it completely? Also I am unclear about the function of Novel Network Armor? What does this do?
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Jan 30, 2010
I tryed to setup a second IP address with yast on a openSUSE 11.2 on eth0 as eth0:2nd but with a different firewall zone. But SUSE firewall just see eth0.
I want to define with services are available on with IP address. Also with custom rules I can't specify a destination IP.
So now can I do this with yast? Or have I todo this manually without SUSE firewall?
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Apr 27, 2010
I have a couple of openSUSE 11.2 machines and each is directly connected to the Internet (they are not behind a router, firewall, etc). I want them to be able to communicate without any firewall restrictions, but keep the firewall rules for all other IP addresses. Is this possible? the software package I'm trying to use randomly chooses a port to use in the range of 32768-61000 and I don't feel comfortable having a port range that wide open on both machines.
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Sep 27, 2010
I have properly configured my router to open a port for Transmission and Vuze. The OpenSuSE firewall settings are somewhat confusing, however. How do I add a port specifically for the BT protocol? I know it's the firewall causing issues, because when I shut it down, my BT apps roar to life, and die with a whimper when I turn it back on. In Ubuntu, opening a port in the router is automatically configured in the firewall; that is apparently not the case with this distro.
So, when I go to Yast Firewall, I see "allowed services" under the tabs available. When I hit that tab, I see a dropdown menu that contains services such as NetBios Server and Samba Server. Am I choosing one of those available and adding a port to it? Am I adding a custom service via the Advanced settings, and if so, why isn't there a way to label the service so that it shows up under allowed services?
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Dec 3, 2010
.i need to configure squid in my company how to install and configure squid in my SUSE server...
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Jan 1, 2011
I've got my server mostly configured with Samba file shares - I can access from Linux and OSX computers. I've enabled Samba Clietn and Sambar server in the openSUSE firewall settings (on the server), but Windows 7 can't seem to connect. I've been trying to tweak registry keys in Windows and such, but had no luck. However, when I turned off the firewall on the server, I was instantly able to connect. Is there some other service or port I need to open for Windows 7?
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