Networking :: See Intranet Site From Behind Gateway?
Jul 28, 2010
There are a lot of boxes in this network and we have intranet site. If I connect computer directly to the network with everything set to automatic. I can see this intranet site. But I've installed a switch. One box has two net adapters and it takes internet, intranet and all from one adapter, the other adapter is connected to switch. Now, I have connected to this switch two computers. Internet is working fine. But I cannot get to this intranet site from these boxes. I can get into shares of other computers in the network but they cannot see me. Everything is hidden behind the gateway. But that's not the problem for me. All I want is to get to this intranet website. How can I do it?.
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May 1, 2009
I am using Fedora 10. I have a network design like that:
WinServer --- (r1)router(r0) --- (eth1)LinuxPC(eth0) --- intranetPC
All netmask is 255.255.255.0
WinServer network is 192.168.1.0/24
intranetPC network is 10.10.0.0/24, gateway is IP of the LinuxPC(eth0): 10.10.0.2
Router:
r1 -IP: 192.168.1.253
r2 -IP: 10.10.0.253
LinuxPC
eth0 -IP: 10.10.0.2
eth1
-IP: 10.10.0.40
-GW: 10.10.0.253
I search in Internet several days to find how to configure the LinuxPC to a gateway. The LinuxPC can ping and connect the WinServer and intranetPC correctly, but the intranetPC cannot ping and connect the WinServer network.
I used the webmin to configure the Gateway.
I used the iptables to set allow all connect, than
iptables -t nat -A POSTROUTING -eth1 -j MASQUERADE
iptables -A FORWARD -i eth0 -j ACCEPT
echo 1 > /proc/sys/net/ipv4/ip_forward
In "/etc/sysconfig/network" add "FORWARD_IPV4=true"
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Sep 7, 2009
Am working as net admin in an institute.. I have Leased Line connection with Public IP? I configured Red Hat Enterprise Linux 5 as Internet Server. I successfully Configured squid and as well as Internet Gateway in my Internet Server.. All are working fine in my client PC environment.. I have one Series Problem in my all Windows Client Pc.. When I try to surf Microsoft and Any Anti-virus site through squid(port no 3128) is fine?but when I try to surf the same Microsoft or any anti virus site through Linux Internet gateway then I got ?Page can not be displayed error?? but all other sites are surfed well through Gateway.. I felt some spy ware is attacked in my All windows Client PC.. So only it ll block Microsoft or any anti virus site through Linux Internet gateway(default port 80
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Sep 27, 2010
In one of our network we are using one firewall which works as gateway. All machines are able to access internet through this gateway. There is no filtering and any internet restriction. I would like to setup monitoring system which monitor and log bandwidth and sites access by client machine. Is there any tool which monitor internet access as well as sites which are access from client machines.
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Jul 27, 2010
I've been on a quest to enable full routing through my openvpn tunnel between my office and the colo. Masquerading will work, however it will throw off anything key based and makes a lot of things just more difficult and vague in general. Is there an easy way to do this via iptables? I tried using quagga hoping it would magically solve my problems, however it does not seem to do my routing for me . I just did a basic static route within zebra...
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Mar 25, 2010
I have three locations with a central office connected to two remote locations. At the central office I run on a cisco asa 5505 two site to site vpns. The remote end of the first site is a checkpoint firewall , and the remote end of the second site is racoon on debian. Both sites are up and working. However, where at the first site traffic goes both ways, at the second site it only works from the central office to the remote office.
For example, I can ssh from a host in the central office to a host in the first remote site (through checkpoint firewall,) then ssh back from that host at the remote office to any host in the central office. In contrast, after I ssh from a host in the central office to a host in the second remote office (through racoon), I cannot see the central office hosts (ping the ip address of a central office host, ssh, etc. all fail.) The vpn settings at the central office (the cisco asa 5505) are identical. So it seems to me that some routing magic is missing on the host running racoon at the second remote office. Where would such setting reside? racoon config files? iptables?
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Jul 7, 2010
I want to do is make an old computer of mine that I use for web development be accessible to anyone within my LAN only.
so in a nutshell i don't want the world wide web to be able to access this server since I use it for development work only and i do most of my actual development work on another system since most of the applications i use requires windows.
I know you can block incoming traffic to all IPs or add individual IPs to allow in, but how can i make the firewall only accept incoming traffic from those within my LAN network?
if you wish to know what I'm using to configure my firewall, I'm using firestarter on this server
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Jul 15, 2011
i've installed a PPTP VPN and have it configured under webmin. fine.i've connected from a remote laptop to the VPN and can access the local netowrk with it. greati really want to be able to access the outside world whilst tunneled through the VPN but clearly i need to do something else?
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Jun 16, 2010
I have a windows PC and a fedora 13 linux box. When connecting to the linux from windows, I'd like to type the hostname instead of the ip address. Apart from setting the hostname, what do I have to do to publish my hostname on the intranet. (set up a nameserver?)
Though hostname works on the linux box, even this fails: nslookup myhostname Also I'm a newbie. I've tried installing some packages like samba and dhcp, using yum...;service chkconfig... and then checking whether nslookup or nmblookup work with my hostname. But it's just guesswork. Under system -> Administration there is no network option. but it is not clear what package is needed to install it, or whether such a thing is supported in fedora 13. I did try system-config-network, but it has few options none of which pertain to hostname resolution. The fedora manuals dont seem to cover it, at least in recognizable plainspeak to me.
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Nov 29, 2010
I have client workstations on separate intra-net LANs. Both intra-nets use network address translation (NAT) or masquerading on the LAN. The private network IP address should not matter (unless it does). When LAN-1 connects with an exterior web site, it will leave a record of the ISP public IP address. A LAN-2 connection could read this record, but how would it know how to reach into LAN-1? How can a network application running on a LAN-1 workstation find and connect with a network application running on a LAN-2 workstation? There is a utility called "woof" where one workstation presents a limited feature web browser for access by other hosts on the same LAN.
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Feb 19, 2010
I am using Ubuntu on a Windows network.
One of the computers have apache server (working), it has 192.168.1.6 IP, and the name of the computer on the network is "servidor"
I can't access from ubuntu, if I type http://servidor or 192.168.1.6, it goes to [URL], but I can access shared folders, just the host intranet server I can't
I have vmware with windows xp, and I can access http://servidor from there, but not from Firefox in Ubuntu.
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Mar 11, 2011
(ubuntu10.10)i want to use use the Intranet and Extranet at the sanme time at school,how to set ?my Intranet ipv4 :10.62.14.79 255.255.255.0 gw 10.62.14.1my Extranet is DSL(use DHCP)my problem is when i use one of them,i must break the other.
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May 14, 2010
Both server (web01), in DMZ, and client (app01), intranet, are Linux OEL5.5.
A few hints follows:
1- I ssh to web01, in DMZ, from a intranet machine on my desktop, export my DISPLAY, and try to bring up xclock; nothing happens.
2- traceroute from web01 to app01 fails.
3- NFS mount from web01, nfs server, to nfs client, app01, fails.
How should my network configuration on web01 or app01 be to make this NFS mount from web01 to app01 work?Each server has 4 NICs, I've only used eth0.
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Apr 17, 2010
I want to learn how to build a Linux network from scratch that includes file and printer sharing, intranet. I have an intermediate-level knowledge of Windows networking. Can anyone suggest a book or online tutorial that I can learn from? Now let me be clear: I am finding no shortage of tutorials on the web. However, too many are old or incomplete.
A little extra info: I am a teacher/network admin for a small private school with about 50 student computers (that I wish to become Linux machines in the future) and about 10 staff computers (mostly Windows laptops--I do not expect the staff to convert to Linux as readily), I currently do not have an intranet implemented.
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Jun 25, 2010
I have to ubuntu machine (9.10 and 10.4) with a openvpn tunnel between them.This is the situation:
Code:
NetworkA 192.168.0.0/24
|
UbuntuA br0:192.168.0.3 (openvpn bridge between eth0 and tap0)[code].....
UbuntuA has one only interface etho and there are two openvpn instance: one bridge istance with br0 and another instance with tun0.
UbuntuA is not the gateway for networkA. UbuntuB is the gateway for NetworkB.I need to comunicate between pc on networkB e those on networkA.This is the "ping situation" (no pc tested has an active firewall):
ubuntuA vs ubuntuB: OK
ubuntuB vs ubuntuA: OK
pc on NetworkA vs ubuntuA and ubuntuB: OK[code].....
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Jan 20, 2011
I am trying to create an intranet that will serve about 100 clients. If it is possible, I would like it to be set that anyone on the intranet would be able to type helpdeskin their browser bar and be taken to the intranet site. I have Webmin and there are just too many options to figure out how to do this. They may as well have written it in Chinese. File server? Email? Impossible.
I can get to the intranet locally by typing in the local IP, but no one wants to remember numbers.
Then, I need to get that intranet accessible via the internet. A domain name has already been purchased and our cable company has assigned us 5 static IPs. The issue here is getting the IP to link up with the server. The intranet has to be configured in such a way that it can be administered remotely. Again, with Webmin, I am clueless. I was going to try to use ISPConfig, but seeing as how you have to pay for the install directions
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Oct 3, 2010
Maybe a site-to-site Ouija board connection.
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Jul 11, 2011
I am trying to get a Linux (Slackware 13.37) working in a Windows networking environment. The IT support for this organisation does not extend to Linux support, so I'm limited in what help I can get for this.
I'm trying to get to the point where I can get to the internet to download what I need on this Linux machine.
The situation is this (*fictitious addresses used) -My Linux machine uses a fixed IP address (10.100.150.21)
My Windows machine uses a DHCP assigned IP address (10.100.150.213)Both Linux and Windows machine are configured to access the gateway server (10.100.150.1)So, I can ping the Linux machine from the Windows machine and vice-versa.I can ping the gateway machine from the Windows machine.I can browse Windows Shares on the network via SMB from the Linux machine.I CANNOT ping the gateway machine from the Linux machine with the Destination Host Unreachable message being the error message.
For actual internet access I need to access a proxy server but since the Linux machine can't even ping the gateway server, it fails to ping the proxy.Now, I have been told the gateway is a HW based router and for Windows machine they use some software for authentication to connect to the network. This software isn't available for Linux, so that's why I've been told to use a fixed IP address.My experience of networking is pretty basic and most of the Linux setup is done via running Slackware's setup program.
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Aug 2, 2009
I have a server with 192.1.9.10 ip address and I want to define two gateways with ip: 192.1.9.4 and 192.1.9.254 on it but I don't know how I can do it. I don't have professional information in linux.
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Jan 1, 2011
I've rent a server from a Germany data center,They use a single IP as their gateway that is not in range of my servers IP,Strangly server is working well and when I use 'route -n' command the gateway which is in other subnet appears properly./etc/sysconfig/network contains no gateway IP and I don't know how they set the default gateway while after reboot the gateway is the same, also the IP is static and there's now DHCP.I need to know how they did it so I can do the same on my VPSes.
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Jul 12, 2011
I have 2 lancard eth0 connected to local lan eth1 connected to bsnl broadband connection, I have centos 5.3 here I configure broadband in dial up mode. I am unable to ping outside world and unable to access some site but able to access internet like google etc, configure file is as:
eth0 Link encap:Ethernet HWaddr 00:14:85:96:1C:A7
inet addr:182.x.x.24 Bcast:1182.16.255.255 Mask:255.255.0.0
inet6 addr: fe80::214:85ff:fe96:1ca7/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:736487 errors:0 dropped:0 overruns:0 frame:0
TX packets:859918 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:122617961 (116.9 MiB) TX bytes:772581200 (736.7 MiB)
Interrupt:185 Base address:0x6000
eth1 Link encap:Ethernet HWaddr 00:08:A1:7B:A0:F9
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::208:a1ff:fe7b:a0f9/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:658246 errors:0 dropped:0 overruns:0 frame:0
TX packets:620456 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:728744445 (694.9 MiB) TX bytes:100768525 (96.1 MiB)
Interrupt:193 Base address:0x4000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:21198 errors:0 dropped:0 overruns:0 frame:0
TX packets:21198 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5867015 (5.5 MiB) TX bytes:5867015 (5.5 MiB)
ppp0 Link encap:Point-to-Point Protocol
inet addr:59.xx.xx.xx P-t-P:59.xx.xx.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1460 Metric:1
RX packets:793 errors:0 dropped:0 overruns:0 frame:0
TX packets:968 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:528818 (516.4 KiB) TX bytes:148274 (144.7 KiB)
[root@venus ~]# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
59.xx.xx.1 * 255.255.255.255 UH 0 0 0 ppp0
192.168.1.0 * 255.255.255.0 U 0 0 0 eth1
169.254.0.0 * 255.255.0.0 U 0 0 0 eth1
182.xx.0.0 * 255.255.0.0 U 0 0 0 eth0
default * 0.0.0.0 U 0 0 0 ppp0
I am unable to ping gateway of ISP IP i.e gateway of static IP.
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Sep 9, 2010
I have one scenerio ,I want to use my Linux PC as residential gateway .I have only one NIC connected to my PC(I cannot connect more) to handle this problem I am using switch . All the devices including my PC are connected using switch (Please refer attached file). I am not sure how can I achieve this ? I am familiar with NAT and DHCP but do not know is this possible in this case?
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Sep 19, 2010
how do i configure Open VPN to automatically use a certain VPN for ONLY firefox, ONLY on a particular site? I don't want it to be applied system wide and screw up my IM client and all the sites that i have remembered passwords with, only for a site or 2 where there are regional restrictions.
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Jan 2, 2010
I have a gateway computer that I've been trying to fix up - whenever I try to install Windows XP/2000/Ubuntu, it finds a bunch of errors. I'd really like to get this computer working, it has a 300GB HD, TV inputs, USB ports out the wazoo, and all that other good stuff. Can someone help me with what to do or have a suggestion on what to replace?
I have formatted the hard drive (the Windows installation did it.) The windows installation is to the point where its copying the installation files to the disk, then it gives me an error that it can't find/can't copy the file. The Linux installation just gives me cryptic errors before it even does anything.
I just want to get it to a point where it's usable I really don't care what operating system.
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Jan 26, 2010
FTP is not working through a gateway and I think I found that I need to modprobe ip_masq_ftp. However, when I do try to load ip_masq_ftp I get the error: FATAL: Module ip_masq_ftp.o not found.My question is: how do I get ip_masq_ftp?More questions: Do I have to build a new kernel? If I do need to build a new kernel do I just include the ip_masq_ftp module or are there other modules that I need?
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Jun 21, 2010
What i need to do is setup a gateway with 2 red networks, reason being 1 is my internet connection and the other is my bDSL connection for our IP phone system and i need an IP range of traffic routed to the bDSL rather than internet, i can do this on individual PC's but id like to do it at the firewall level so i dont have to configure each machine on the network.
basically i want all traffic to go to internet except for say 203.x.x.x which i want routed to the bDSL router and let it handle it. Ive dome some reading and it seems ipcop and smoothwall cant do it so i was hoping with some tricky work maybe i can get ubuntu to do it for me.
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Feb 12, 2011
I can ping my IP, and other PC in the same LAN, but I CANNOT ping the gateway on my 10.04LTS ubuntu. Other PC in the same LAN(Ubuntu 10.04LTS) could ping the gateway and my IP. I thought that (1)network cable is OK because I could ping the other PC in the same LAN.(2)Gateway is OK because other PC could ping it. (3)setting of operating system might be somehow wrong.
I have tried to restart the network several times and still not works. I followed the HOW-To debug tips and following is the results. Any suggestions?
1. ifconfig
eth2 Link encap:Ethernet HWaddr 00:1d:7d:aa:d5:d3
inet addr:140.112.61.75 Bcast:140.112.61.255 Mask:255.255.255.0
inet6 addr: fe80::21d:7dff:feaa:d5d3/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
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Mar 14, 2010
I am coming across a strange error with my gateway. When I do a "ping", this is what I get below:k-63a5b848c6cb4:~ # ping simba PING simba.gateway.2wire.net (192.168.1.69) 56(84) bytes of data.
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=1 ttl=64 time=0.041 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=2 ttl=64 time=0.029 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=3 ttl=64 time=0.023 ms
[code]....
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Sep 3, 2010
Im having a issue with routing internet traffic from my router two different subnets (vlans).
Theres my setup:-
Server:
Both eth0,1 are running dhcp (two scoopes) that works fine!
The output of route -n is:
I have ip_forwarding on aswell, but i can ping the ip on the server running that dhcp scoope ie ping 192.168.4.1 works great but i just cant get the internet on the clients.
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Aug 16, 2010
a wireless router (box) is went stuck, I found that when it is stuck it uses strange IP local address remote address 10.112.112.112, today is also went stuck but this time the gateway was 10.112.112.112. I had to switch off, switch on teh router to function properly. I am using DSL connection normally the gateway is likie that 78.8.... and my IP (dynamic) like 78.8.240..... Is there any default meaning of 10.112.112.112 in teh net connections?
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