i have problem with my configuration iptables, i have configured for transparent like this,
for masquerade -> iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
for transparent -> iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-ports 3128
how to make a rule if there 1 address i dont want to redirect to port 3128? in other words 1 specific address just run on port 80.
I wish to intercept/forward emails that is sent to one user on multi user mail server.I only want email from one specific address or group,to be redirected and it will be redirected to another user on same server.The email should not arrive in original users inbox.".forward" file can not give me such solution,because ".forward" file will forward all mails to another specific mail id,which i don't want. I want only specific users mails onto another local user.Is this possible in sendmail?Anybody have clear idea of "virtusetable" & "aliases" file?
View 1 Replies View RelatedI configure squid to work with squidGuard , and all thing work properly , but there is problemfirst look to this squidGuard.confdhhome /usr/local/squidGuard/dblogdir /usr/local/squidGuard/log
src blacklist {
ip 10.0.0.5
}
[code]...
how to redirect network traffic to a new IP address using IPtables. I am using Baffalo router and the rtos used is DD-WRT. Basically, I want it so that any connection going through my router to a specific IP (say, 192.168.11.5) will be redirected to another IP (say, 192.168.11.7) so any outgoing connections made by a program that is attempting to connect to192.168.11.5 will instead connect to 192.168.11.7.
View 2 Replies View RelatedSomething strange with my firewall i used firestarter I dont know why i cannot ping outside on a specific IP address here is my setup. I have IP from ISP
119.92.56.77 - eth0
192.168.50.1 - eth1
with DHCP features from 192.168.50.1 - 254. my problem is i cannot ping this specific IP address which is 119.93.232.234 if you can try there and pinging is ok but here cannot because that IP address (119.93.232.234) they used that to connect to our openvpn which is the IP is 119.92.56.78 <---- this system linux(centos) or IP has no firewall enabled. meaning i separeted this connection. which my setup is like this for OPenVPN
[code]...
I have my firewall setup so that only specific subnets/IP addresses can access the system. My issue is that I have remote user/laptop who needs to access the system, but is constantly on a different subnet/dhcp IP address. Is there configuration for iptables where I can enter the mac address of the laptop to allow access to the system and not specify a subnet or IP address?
View 3 Replies View RelatedI want to setup 1Gbps our lab network and we purchased 'Buffulo Giga layer switch ' with 24ports. Is there a way to tell DHCP to assign specific IP to a particular MAC address of a machine ? We want to use DHCP and whatever the port we use ,it should have same IP ..
View 1 Replies View RelatedI hv Cent OS 5.3 installed as server. I hv a network of approx 100 desktops and laptops. For a security purpose i want to block certain laptops from gaining a the network access using dhcp. Can we block the ip address leasing if a specific MAC address request for a ip lease?
View 7 Replies View RelatedRecently I need to redirect domain name that is a mobile minisite called m.domain.com/abc to external hosting web server ip with like 123.123.123.123/abc in our apache web server. This website is hosting in external. Our apache is 2.0.53, because I am new in Linux, so I don't know how to work out this. I want to know that how can I achieve this? Is it just use the DNS to map it or need to config our apache to work out this? I really urgent to know what can I do for it?
View 5 Replies View RelatedI have nine barcode scanners, each of whose input I want to send to a separate instantiation of a program I wrote. Each device shows up as /dev/hidraw_ (I'm using Ubuntu 10.4). The problem is that they all act as simple keyboard input, and I can't seem to redirect the output from one to a specific instance of my program. I've tried something like cat /dev/hidraw5 > ./myapp, and that doesn't work. I've tried actually opening the device in my program using open("/dev/hidraw5"), and it returns success, but subsequent reads don't do anything, and the scanner output is just printed to the console.
View 1 Replies View Relatedtell postfix to send email sent to one email address to another email address. What I really need to do is tell postfix that every email sent to [URL] and [URL] be sent to [URL] I tried transport maps like this: [URL] but that did not work. I then tried canonical maps like this:
recipient_canonical file:
/^((dbsupport|helpdesk).*)thisdomain[.]com$/ admins@thatdomain.com
sender_canonical file:
/^(.*@).*thisdomain[.]com$/ ${1}thatdomain.com
but it did not work either. I am really exhausted and I need to find a solution for this one since it is my boss asking me to get this working. This is what if in /var/log/mail in box1:
Dec 28 16:10:25 box1 postfix/pickup[19291]: 54D258F726: uid=0 from=<root>
Dec 28 16:10:25 box1 postfix/cleanup[23489]: 54D258F726: message-id=<4D1A5241.mailIBZ11LRR6@box1.thisdomain.com>
[code]....
i am using openssh 5.2-p1, i want to restrict user "admin" to login to the server from a specific IP address, for this purpose i have tried the following blocks in sshd_config file.Following is the part of the sshd_config file which i have modified
#The following commands will only allow specific IP to login to ssh.
#AllowUsers admin user1 user2
#AllowGroups
# override default of no subsystems.Subsystem sftp internal-sftp
Match Group sftpgroup
ChrootDirectory /home
AllowTCPForwarding no[code].....
i want to restrict admin user to login to the server only from 172.16.100.221 IP which can be done by using AllowUser line, but i dont want to use AllowUser line,
Location and syntax of named.conf in Ubuntu's version of BIND 9. I already have an HTTP server (in the form of Apache) along with forum software set up on my Acer netbook. However, the only way I can access the forum software is if I type in my IP address. How do I set up my named.conf to get the IP address to redirect to a domain? I already have my resolv.conf configured to allocate a domain to the IP address, but testing the ping of the site returns a "No such domain" error.
View 1 Replies View RelatedI have a bootable utility toolset that I put together with Fedora 14, one of its primary functions is to map a user designated share via script and access information from it. The command that I used, that functioned perfectly, in Fedora 14 was:
Code:
sudo mount -t cifs -o user=provided.account.name //file-server.mydomain.com/share/images /mnt/source
[code]...
I have this very weird problem: I'm not able to SSH to 1 specific server on the web. I can access everything, but not that specific server.
When I try to SSH, I get this code...
When I reboot to Windows, I can SSH using Cygwin. I'm using Ubuntu 10.04 Lucid and OpenSSH client 1:5.3p1-3ubuntu6.
I tried sniffing the network with Wireshark, but I cannot understand why the TCP connection cannot be set up. I'm sure it's an Ubuntu problem as I'm able to connect to that server on the same machine, but different OS.
I am using ubuntulite for an old pc. The speed and performance is excellent!! But there is one problem. I am not able to edit my ip address. The computer is on lan and i have to assign a static ip to my system so that it connects to the net. The gui is not working. So I want to edit the ip through the terminal. How to edit the ip throught the terminal<command line>.
View 9 Replies View RelatedI want to force my IP address to 192.169.0.99but my router always allocates me 192.168.0.2I have attached a screen showing my settings.I'm using the broadcom wireless card to connect to the router?Any thoughts, I have tried to change the setting with and without the network manager.
View 3 Replies View RelatedI have just installed Ubuntu 9.10 (64 Bit) and I'm trying my best to get this Linksys WMP300N wireless adapter to work.I have searched and gone through a number of threads here with some level of progress but I still can not get this to work.Adapter info is BCM43XG [14e4:4329] rev 01I have installed driver bcmwl5.inf using ndiswrapper and ndisgtk.I had absolutely no success trying to use network manager applet so uninstalled it and went with Wicd instead which at least sees my SSID network with a strong signal.My network is encrypted using WPA and I entered the passphrase which seems to pass authentication but it keeps trying to get an IP address until finally it just tosses a failed message.I feel as though I'm really close but it just won't connect.
iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
[code].....
I'm using Ubuntu 9.10, and I want DHCP to assign an IP address automatically. I can ping my router, and get a reply. I just have no idea how to do this.I'm trying to get my Ubuntu machine onto my Windows network.
View 9 Replies View RelatedSo I got Ubuntu 9.10 on my laptop working really neat and wanted to upgrade my desktop to 9.10 as well. So I reinstalled Ubuntu there and now I can't connect to my network anymore....
I have a usb wireless adapter (currently Sitecom as I bought a new one today to hopefully fix it, but ended up at exactly the same problem as with my old adapter). The network manager I'm using now is Wicd since some topics I was looking through were about malfunctioning GNOME network-manager (which I removed) and suggested to try this. The GNOME network-manager kept prompting to insert my WEP network key which was a correct one. When I removed all security from the network it didn't prompt anything anymore but just failed to connect. The Wicd network manager is so nice to tell me that it cannot obtain the IP address however, so I suspect that this is my main issue... but I have no idea what I can do about this? Tried using a static IP and then I get the message "Connection failed: Could not contact the wireless access point."
I feel powerless as my knowledge here is just lacking..
how to block a specific MAC address
View 2 Replies View RelatedI recently setup motion on one of my computers with a USB camera. On that computer if I type [URL] I can see my live video. If however I type [URL] on that computer or any other on my wireless network, I get a page cannot be displayed. I checked that UFW was disabled and I am able to ping the motion computer from any other computer on my network. Also I am not sure if it matters but I do have apache installed on my motion computer as well. why I cant view my live video from different computers I am using Ubuntu 10.4 on all computers
View 4 Replies View RelatedI run an centos server. From the console I can ping google.com and get a reply. But when I ping another address say xyz.com, the IP address is resolved (11.22.33.44) but there is no reply. In the same network in our office from my desktop I ping [URL] and there is a reply.I turned of the firewall but still the same problem.
View 9 Replies View RelatedI have vps box with debian. I have two ip addresses, but first (default) is currently unavailable. In that case there is many problem. Fortunately wget has --bind-address option so I can download. My question is how can i configure apt-get, aptitude to use specific address?
View 1 Replies View RelatedI would like to COMPLETELY block a specific IP address using iptables. I found this one:
Code:
iptables -A INPUT -p tcp -s xxx.xxx.xxx.xxx -j REJECT --reject-with tcp-reset
Will this work? How do I undo the changes later?
I have create distro groups in zimbra and have add member sin there. when i connect an account on mapi etc. [URL] i have create a persona in order client to send from [URL] rather than [URL] How can i restrict inside postfix to relay using [URL]?
View 1 Replies View RelatedI am trying to get apache to listen to specific IP address and I have read up of the listen command (http://httpd.apache.org/docs/2.0/bind.html) I can get virtual sites to work but not the apache it self.
View 5 Replies View RelatedI'm having really weird and frustrating DNS issues with my clients unable to properly resolve the server's ip address. They can resolve each other's, and outside systems, but not the server - at least, not correctly, and not all the time.
I have one Ubuntu server set up that does both DHCP and DNS serving to the Windows systems. The server has DNS forwarding turned on to forward to OpenDNS's servers (I've tried using my ISP's dns servers but the problem remains).
The server is *not* set up as a firewall; I am actually using a DLink router for that, and the Dlink is *not* set up to serve up DHCP nor DNS.
What I am getting is that my clients - and there are nothing but Windows clients - will not resolve the name of the server. For example, if I do: ping linuxserver
I get back a false IP address of 192.168.0.64 (and I've seen once a 192.168.2.49).
If, however, I put a dot in there: ping linuxserver.
I get back the *correct* IP address of 192.168.0.2, and thereafter, ping'ng linuxserver without the dot will work. Until the dns cache expires, either naturally or with ipconfig /flushdns on the windows clients.
The client *are* getting valid dhcp leases and can resolve everything happy-happy, they just will not get the proper address of the server 100% of the time.
I'm trying to troubleshoot some strange networking problems. The pattern seems to be that only newer distributions are affected. CentOS 5.4 and Ubuntu 8.04 work fine out-of-the-box. But Arch, Sidux, AntiX, Fedora, etc. show the same pattern of errors.Certain websites cannot be found unless I disable ipv6 in Firefox. And certain addresses cannot be resolved using various terminal commands (wget, apt-get, yum, etc.). What I would ideally like is a permanent solution, perhaps changing some settings on my router, so that I don't have to deal with this each time I test-drive a new distro. I have a hunch the issue has something to do with my DSL provider (Fairpoint) filing for bankruptcy.
One more piece of information that may or may not be relevant: I recently switched a website from one hosting company to another. I noticed there was a delay of several days where I saw the old version at the old host, but viewing the site at a friend's house or the coffee shop showed the new site on the new host. This leads me to suspect DNS issues perhaps, but this is not an area of expertise.
I'm running gnome desktop on squeeze system. When I boot my system seems to be using my internet modem as its dhcp server. The rest of the machines on my lan are correctly using my router for that purpose. As a result, what happens then is that my debian machine frequently gets a duplicate ip address assigned to it. I would like to specify to my debian computer that I want it to use the specific fixed ip address of my router for dhcp purposes.
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