I have a server provided dns and sendmail service, dns keeping record for my public servers. I don't want my server to be open dns server, so I just add recursion and forwarders option to named.conf, like: allow-recursion {192.168.x.x/24; 123.123.x.x/28; 127.0.0.0/8;}; forwarders {publicDNSipA; publicDNSipB;}; After restart named, all sendmail user can't mail to other internet account (like xxxxx@gmail.com); but local account is ok
I have a perplexing problem that I was hoping some of you might help me solve. My servers run 10.10 and also serve as standalone LTSP hosts - none of this is terribly relevant I hope. Recently, a user complained of permission problems and so I ran a simple command:
Code: chown -R username:username /home/username/* and
I'm still a but confused about the standard way of removing it for left-associative operators: [URL] Especially about how to construct an AST from it by executing a peice of code for every nonterminal matched. And I'm still not totally convinced that it will be left-associative, I just barely understand it. Also, how would you remove left-recursion for something like this:
Code: expr ::= expr "(" param_list ")" | other stuff...?
i was hoping that someone in here could possibly help me out with my iptables rule set. First here is what i would like iptables to do, i want iptables to deny all packets or traffic from the outside coming in and for output allow the things i need like web and irc etc... Also, i would like iptables to deny access to all services like sendmail and ssh except i would like localhost to have access to everything. What i mean by localhost is that when i run my iptables script it loads fine except when i try ssh from localhost i get this output:ssh -l user localhostssh_exchange_identification: Connection closed by remote hostI know what most of you are thinking, why do i need to ssh into localhost from localhost just open another terminal, well i am getting myself familiar with iptables i want all services logged and blocked but not from localhost. I cant seem to figure out this problem and i have tried several different things. Here is my iptables script, I am hoping that someone out there can tell me what i am doing wrong...
#!/bin/bash iptables -v -F; iptables -v -A INPUT -i lo -j ACCEPT;
I've got a VPS node running 2.6.26-2-openvz-amd64 and several guest machines. My kernel keeps reporting a printk bug in syslog:
[Code].....
This is somehow being replicated on the guests machines. I've read that printk is a kernel function that prints out a message, during bootup Has anyone experienced similar problem or have a more experience with this? Does it have negative impact to the host performance?
The first is about implementing function calls. The way I currently have it is that functions are called with a C++ std::vector of nodes as the parameters. How would I turn a comma-seperated list of expressions into a C++ vector in the grammar?Second, how do you implement left-associative operators in a parser that does not allow left recursion?
And third, what would be the best internal representation of integers? A C++ int seems simplest, but limited. Using GMP seems more versatile, but I'm afraid it might seriously slow down the interpreter compared to C++ ints.
I have uShare 1.1a setup to talk to my XBox 360. If I share a directory that has no subdirectories, the video files display on the XBox. However, most of my files are in sub-directories on a different partition - I don't really want to copy them to the share, but uShare doesn't seem to recognise any sub-directories or files contained therein.
I have tried setting up symbolic soft links directly to the video files (although this is a pain, it is better than moving the files)...
Code: ln -s /home/jonftp/TV-Shows/Buffy/Season-1/Buffy-101.avi /home/share/Buffy-101.avi ...but these don't show up on the XBox either.
How can I get uShare to "drill down" the directory structure to list the files or how can I get uShare to follow symbolic links?
I am trying to do something outlandish with iptables (or so I think!).I have a source sending udp packets to a destination (say dst11). Using port mirroring I am able to get all these packets to a different machine (say dst22). I am able to see these packets on dst22 interface using tcpdump.I want to analyze the packets on dst22. So what I do is put dst22 interface in promiscuous mode (using ifconfig eth0 promisc). This in theory should get the packet through the MAC layer. Now using iptables I am trying to DNAT the packets in nat prerouting to change the packets destination IP to dst22's interface and change the destination port.
I have a problem with showing localhost (my website is on it) on the internet, so that everyone can see it. On Windows all you have to do is:open httpd.conf change ServerName 127.0.0.1 for your own IP and it works.On Linux there is is empty httpd.conf, and configuration file apache2.conf doesn't have any address to change.It looks like, that I have to enter my IP somewhere or some of my settings are wrong:first computer (vista) second computer (ubuntu 9.10), cable net providerwhat I did:-activated DMZ, in my router settings and added Host IP Address: 192.168.1.100 -active dhcp (no changes)Windows side:in TCP/IPv4 instead of automatic ip and dns I have entered my own:
This is a RHEL 5.4 install. I did a fairly routine install setting up a static IP address of 10.5.96.10, a subnet mask of 255.255.254.0, and a gateway of 10.5.96.1 with the standard DNS setup for this network. These are all standard network setting for this network and otherwise work fine on other systems. The IP, gateway, and subnetmask all appear correctly on all relevant configuration files. This server can not ping any other system on the network and can not ping its default gateway. No other systems can ping this one either. Also this system can not ping "localhost" or its own hostname. The hosts file contains the line:
[code]...
I can ping 127.0.0.1 and 10.5.96.10 and it works fine. Also the firewall is disabled. I know I probably can't get a straight forward fix with the information I have on hand right now, I'm more of a Debian guy, so there might be some Red Hat intricacies I'm not familiar with. I think I had a CentOS install some months back that had this issue and I don't remember how I fixed it, or if I even did. I might have just replaced it with Debian. That's unfortunately not an option this time around since it's not my box.
Firstly i had 777 permissions on that folder (and all files inside), but i don't like it, because everyone can see it and change it.
As Apache runs under user www-data:www-data, i tried to set the group and permissions:
sudo chgrp www-data www -R sudo chmod 770 www -R
After i done that, http://localhost started to show 403 - Forbidden. It just looks like apache is taken as "other" (from owner, group, other) in words of permissions.
What should i change (permissions, owners, whatever) to keep all files visible and changable only for me (user radek) and executable by apache?
As i can see, there's one Apache process running under root and many others under www-data.
I have a linux test machine which I would like to run a copy of a production webserver. This is a legacy application which does not use a property file for its server name. Throughout the application, the server name is hardcoded (example: open connection to myServer.myCompany.com).
Is there any linux trick which I can use to redirect all requests for a certain host back to localhost? I know in Windows that I can add an entry to the hosts file and have it redirect back to localhost. How do I do this in linux?
Made some network and hardware changes, and now I can't get the mailserver to work. It seems that sendmail can't loop to itself on 127.0.0.1. When I nmap localhost, I find that port 25 isn't open.
Naturally, nothing has changed on my system except for different routing, interfaces, etc.
So the question for sendmail gurus,is where should I be looking?
I'm trying to connect to my linux server but I'm having some major problems. The server had OEL 5 installed and my local pc is running Windows XP. I'm using PuTTy to connect to the server with Xming running on my loacl machine. I login as root and run the following command - export DISPLAY={ipaddress}:0.0I then run xclock and get the following error - Xlib: connection to "{ipaddress}:0.0" refused by serverXlib: No protocol specifiedError: Can't open display: {ipaddress}:0.0The strange thing is that on my bosses pc (who has got almost the exact same setup ie. PuTTy & Xming) is works perfectly.
I've tried searching for this peculiar behavior, but couldn't find a solution that works for it - I have installed Redhat on my system and have a listener running on port 7878. I wanted to check if the port is accessible from a machine on the network, and so i telnet-ed from a remote machine and it worked. Now comes the weird problem - I used the same command (telnet xxx.xxx.xxx.xxx 7878) locally and it was able to telnet. However, if I try to connect using localhost, meaning, "telnet localhost 7878" or "telnet 127.0.0.1 7878", it gives me the following error:
Trying 127.0.0.1... telnet: connect to address 127.0.0.1: Connection refused telnet: Unable to connect to remote host: Connection refused
Here is my /etc/hosts entry:
# Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost.localdomain localhost ::1 localhost6.localdomain6 localhost6
[Code]....
Not sure where the problem is. I expect telnet to connect irrespective of whether i use the IP address OR localhost when i use telnet locally.
I have installed Linux Mint 8 (based on ubuntu). And I have setup a webserver on port 8098.
I can connect to my webserver with http://127.0.0.1:8098, but when I try to connect to http://192.168.1.107:8098 from the same machine or another machine it doesn't work.
How can I get this working? Is there any default firewall settings that I have to change?
I have an application which is separated to several parts (processes) communicating over TCP/IP, using a pre-defined port on localhost.Is this always safe? Can some kind of a firewall (corporate, locally installed, Windows firewall, etc) block this traffic? Or can some user settings in the OS that can block this traffic?The OSes I'm interested in are Windows (XP through 7) and Linux (Ubuntu, RHEL, SUSE)
When I create a folder in the system, it's created successfully Code: [test@localhost localhost ]$ cd test/ -bash: cd: test/: Permission denied drw-rw-r-- 2 test testinstall 4.0K Sep 16 18:51 test
I'm in the process of setting up a new Debian box as a web server. I had apache2 and mysql set up and all of the SSl taken care of. After installing selinux I noticed that my browser and ftp in the terminal wont connect to localhost, other computers on my network can connect to the apache server via a global ip, but it wasn't pulling database info. When I checked, I found that mysql was stopped. When I try to start it, it times out.
After some googling and trying a bunch of setsebools I finally just disabled selinux in /etc/selinux/config. I rebooted and confirmed selinux was disabled, but still the same issues. If it helps the error php throws when trying to connect to mysql is "can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)"
I have an intel i7 with windows7 64b , then install VMware Workstation and create a machine with Oracle enterprise Linux 64b 5update4, now i want to inatall oracle db10gR2, but this message apears. [oracle@localhost database]$ Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using 'localhost:0.0' as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method) at sun.awt.X11GraphicsEnvironment.<clinit>(Unknown Source) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source)
telnet localhost 143Trying 127.0.0.1...Connected to localhost.localdomain (127.0.0.1). Escape character is '^]'.* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2005 Double Precision, Inc. See COPYING for distribution information.a login rakesh@sanjiv.com rakesha NO Login failed.i have problem when Installing Courier-imap/imaps with Courierpassd .
I'm running a Debian installation from which I installed zomeminder using Synaptic Package manager. I fixed several issues with deprecated functions and other miscellaneous stuff. Finally have it working fairly well.However, not quite....zoneminder keeps hanging up as a review the captures in iceweasel. I click on the id field in the table and the event view shows up. After I review several, clicking the delete button on each to move forward Iceweasel hang up with the pinwheel spinning. If I completely close out iceweasel I can then start reviewing again.The following error message appears in the apache2/error.log.
[Tue Jul 26 18:59:36 2011] [error] [client 127.0.0.1] socket_sendto( /tmp/zms-644018s.sock ) failed: No such file or directory, referer: http://localhost/zm/?view=watch&mid=1 [Tue Jul 26 18:59:36 2011] [error] [client 127.0.0.1] array (
I have setup a Linux Centos with apache server on it in a home network. Everything works fine. When I access the webserver I put in the address bar the IP address of the server which is 192.168.0.150 and when hit enter, it prompts the page where I have to put login information. The login information is set to: username: admin@localhost.local password: *************
It takes long time for authentication go through and load the page eventhough I am accessing the site in a same home local area network with fast ethernet connection. How can I change the localhost.local to something else like maybe [URL] instead and if I have to change settings in other files as well?
Could someone check this for me? I tried to send mail to localhost (ubuntu server) but when i tried to view it in log file, it gave me this:
Code: xanios@ubuntu:~$ tail -f /var/log/mail tail: cannot open `/var/log/mail' for reading: No such file or directory tail: no files remaining in my /etc/postfix/main.cf: Code: myhostname = ubuntu alias_maps = hash:/etc/aliases
