Networking :: Network Not Working In Gateway System
Jan 7, 2009
I have a network gateway system which runs redhat 7 (2.2.16)
Firewall running is ipchains
Internal network is eth0 192.168.5.1
External network is eth1 99.99.99.98 (example add)
My problem when I change the static address of the external network from 99.99.99.99 to 99.99.99.98 I am not able to connect to internet. From my preliminary investigation ip is not binded to network card., but I am not sure, is there a way to check binding accurately
Below is the ifcfg-eth1 file contents
DEVICE="eth1"
USERCTL=no
ONBOOT="yes"
BOOTPROTO="none"
NETMASK="255.255.255.0"
IPADDR="99.99.99.99"
IPXNETNUM_802_2=""
IPXPRIMARY_802_2="no"
IPXACTIVE_802_2="no"
IPXNETNUM_802_3=""
IPXPRIMARY_802_3="no"
IPXACTIVE_802_3="no"
IPXNETNUM_ETHERII=""
IPXPRIMARY_ETHERII="no"
IPXACTIVE_ETHERII="no"
IPXNETNUM_SNAP=""
IPXPRIMARY_SNAP="no"
IPXACTIVE_SNAP="no"
I have updated the address change in ipchains firewall scripts. Before IP change network was work fine with this firewall scripts.
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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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Jul 13, 2009
I have two network card in my computer.
1. eth0 is set to automatic obtain IP from provider (DHCP)
2. wifi0 is set to static IP (local) 192.168.1.1
My ifcfg-wifi0 is configure in /etc/sysconfig/network-scripts/ifcfg-wifi0 as below
# Atheros Communications, Inc. AR5212 802.11abg NIC
DEVICE=wifi0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.1.1
NETMASK=255.255.255.0
HWADDR=00:17:9A:75:48:37
my /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=pc1.homeserver.in
eth0 IP is connected to broadBand internet service provider device WiMax and IP change time to time from internet service provider. How can I get IP for gateway in /etc/sysconfig/network. I am using Redhat enterprise Linux 4.
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Mar 23, 2011
My workstation is on a network, let's say 10.100.0.0/24. I'm opening up an openVPN Tunnel to a test environment in my company, receiving a lot of routes to this network (address range 172.xx.yy.0). Everything is working fine so far. In this test environment I placed a number of virtual systems having their own private network (10.99.0.0/24). I have one machine in this virtual cluster which is able to forward incoming IP traffic to the others.
When I login to this gateway system, using the 172.xx.yy.zz address, I can logon to the others using the 10.99.aa.bb addresses. Fine so far. But I have to be able to call these machines with the 10.99.0.0/24 addresses from my laptop. So I tried to add a route like:
route add -net 10.99.0.0 netmask 255.255.255.0 gw 172.xx.yy.zz
Unfortunately I received an error messages:
SIOCADDRT: No such process
According to the entries in other forum articles (Google helps in most cases), I have to add a host route first:
route add -host 172.xx.yy.zz gw 172.well.defined.dest
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Feb 12, 2010
When a second network adapter is fitted, the boot script fails to configure the default gateway. Here's from /var/log/messages with DEBUG_ETH_UP="yes" configured for the boot script Code: Feb 13 10:22:23 ps1 logger: /etc/rc.d/rc.inet1: /sbin/route add default gw 191.168.1.1 metric 1 Feb 13 10:22:23 ps1 logger: SIOCADDRT: No such process
After boot the same command failed with the same message when done by root logged in via ssh but succeeded when run from the console After removing the second network adapter, the boot script is able to configure the gateway.
EDIT: or not. The problem now seems intermittent Now with only the onboard network adapter the same "SIOCADDRT: No such process" error is logged during boot and the "/sbin/route add default gw 191.168.1.1" command fails at the console too. Am experimenting with disabling the onboard adapter and fitting the NIC.
EDIT 2: definitely intermittent. Just rebooted with no hardware changes; same error during boot and route -n showed no default gateway but "/sbin/route add default gw 191.168.1.1" worked.
[Code]....
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Dec 19, 2010
I could not able to configure the default gateway ip address onto the system. i use the route command (" route add default gw 192.xxx.xxx.xxx eth0 ") to add a default gateway onto the routing table but it is "disappear" in the routing table when i had restart the service network.
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Jun 24, 2009
7.2 Home Network Gateway. Has anyone used this gateway and will it support both desktop and laptop I ask this question because I use my desktop at home and when traveling the laptop. The desktop has Fedora and the laptop has cut my tounge out vista.
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Oct 21, 2010
I've been struggeling with this for a few hours now, googleing and so on trying to find an easy way to just switch which device I want as primary for internet connections. After long battles I'm at a loss, this is the current automatic routing
Code:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
85.225.76.0 0.0.0.0 255.255.252.0 U 1 0 0 eth0
85.225.76.0 0.0.0.0 255.255.252.0 U 2 0 0 wlan0
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Dec 16, 2010
I have a laptop running OpenSuSE 11.2. I use the Yast menu to set up network settings via "traditional" ifconfig setup (not NetworkManager), because I found NM unusable in prior releases when doing network gymnastics such as router re-flashing, LAN reconfiguration, etc. where I needed control of the IP address, netmask, DHCP, tftp, etc. My laptop works fine with Yast "traditional" ifconfig configuration for eth0 connected to router to Internet. Works fine with Yast ifconfig configuration for USB WiFi as wlan1 to WiFi router to Internet. Also works fine for virtual machines on vmnets NAT-ed to the Internet. Works fine as long as there is only one network connection, that is.
Now, I have a second laptop. I want to network laptop #2 eth0 to laptop #1 eth0 for file transfer and/or Internet access WHILE laptop #1 is is linked to the Internet through wlan1. Unfortunately, I have not figured out how to get Yast/Network Configuration to do that. I have not been able to get Yast/Network Configuration to see both wlan1 and eth0 at the same time--when the Yast utility finishes, I do >ifconfig and >route, and I find that I have lost either eth0 or wlan1. Thus, when I do direct-connect file transfers, I loose the WiFi Internet connection on both machines.
I suspect that it might have something to do with Yast/Network Configuration utility not being able to handle two network interfaces on the host with different IP addresses. how to properly put an OpenSuSE machine on two networks simultaneously? And then how to turn on IP forwarding so that I can use laptop #1's WiFi as an Internet gateway for laptop #2?
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Feb 26, 2010
I have openSUSE 11.2 installed and i need to create a gateway server that allows virtual private network connections. I want to play with my friends some lan games, but we are in different networks, so i want to create this gateway server so we can connect with VPN clients to this server and play freely.
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Mar 31, 2011
is it possible to set up a "gateway" with just one network interface? Basically, I have a cable wireless router which is connected to the internet. I want to have my network use a transparent proxy, however, the transparent proxy is on an ARM computer with only one network interface. So the proxy will act as the "gateway", which then forwards all external request to the Cable modem.
[Code]...
Now, I need the cable modem to be in the same network, because I want to use it's wireless access point... Do I need to have two subnets? one between the Cable modem and the proxy, and then a second subnet as a virtual interface on the proxy to communicate with all the computers?
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Jul 17, 2011
I installed openSUSE on one of my work system. The network port wasn't working when I was installing, but works fine now (checked in Windows). But for some reason, I am not able to configure the network. I used both Dynamic and Static IPs (both work fine in Windows) but still no go. I am using Yast Control Center for this purpose. I can't even ping the default gateway when I am using custom settings. When I use dynamic settings, it says Unreachable Network.
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Jul 15, 2010
Why trying to avoid ranting about my Linksys router, I'll try and keep things short. I have a Linksys router in which the default firmware was terrible and would not correctly renew its DHCP lease. After getting feed up with that I flashed dd-wrt on the router and now it works better but randomly DNS queries would stop being resolved. To rule out the chances that it is my ISPs DNS servers I switched my DNS to openDNS, same problem happens (although I have to admit openDNS is a lot better than what my ISP has).
Anyways I'm about feed up with it and about an inch away from drop kicking the thing out my window. To avoid that I figured I will give it one more change and instead of using my Linksys as my network gateway I'll move all of that to my home server, and make the Linksys just an wireless AP. Besides setting up DHCP, DNS, and iptables on the server is there anything else I will need to know and setup on the server to make this work?
Side note anyone using openSUSE for DHCP know if setting up reserved IPs for certain MAC address is possible?
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Jul 25, 2011
I had an Ubuntu Server 32 bit installation and everything was working fine. Now that I installed Ubuntu Server 64bit on a new drive in the same machine, the ethernet card is not working!! This is insane cause when I put the hard disk with the 32bit installation back and booting from it, the ethernet card is working without any problems but in the 64bits installation it is not shown at all using "ifconfig -a"
lspci output:
Quote:
02:00.0 Ethernet controller: Atheros Communications AR8151 v1.0 Gigabit Ethernet (rev c0)
How can I check which module is being loaded in the 32bits installation to try to load it manually in the 64 bits installation?
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May 7, 2011
Sometimes my file share network stops working,and will then work again.I'm lost with this problem. The server pc is a Zenwalk pc.The other pc is a win7 pc. This error only occurs on Zenwalk. When i run puppy from the live cd the file shares are always visible,without fail.Under puppy i use pNethood. When the ping command is used there is no problem, and the pc name can be pinged.This is shown below:
[Code]...
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Sep 1, 2011
I am trying to connect to a vpn through vpnc.
It hangs at the end and I can see in /var/log/messages "modem-manager: (net/tun0) could not get port's parent device" and then eventually "withdrawing workstation service for tun0".
My settings are correct and other people seem to be able to connect.
I am not using KNetworkManager because of an issue on my machine regarding rfkill.
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Jan 29, 2011
I have a Broadcom Corporation NetXtreme BCM5721 network card on my server at work.Everything works fine for a few weeks, then randomly the network connection on the server will stop working. After it stops working, I will try to reconnect with the network manager, it shows a wired connection available, it shows the "connection in progress"animation, then the "connection disabled" icon.
I uninstalled the network manager and used manual configuration, but do you think the network manager was the issue? I can't have the server disconnecting randomly every few weeks with no way to know what the real problem is. Was there an issue with the network manager with 10.04?
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Jun 20, 2010
My main PC has AN Athlon X2 4600+ on an Asus M2npv-vm. Has been working fine for ages running Ubuntu. Today it the system locked up and I had to do a reset. Since then it will not connect to the router or cable modem. I can connect another PC to the router, so that looks okay.
What can I do to test the network connection from Ubuntu? It's not even getting an IP.
I suppose it could be something has died in the hardware, but want to eliminate other possibilities first.
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Aug 28, 2010
OK so I set up a server yesterday and got ndiswrapper loaded on it with the appropriate driver, I edited the /etc/network/interfaces file to contact my router with it's MAC address, WEP Key, etc... So the problem is I can ping addresses like Google and Ubuntu Forums but I can't use apt-get to install or update packages. When I try sudo apt-get update I get a whole bunch of Code: W: Failed to fetch <address>Temporary Failure resolving <address>My Wireless interface is wlan0 and also I can ping my server from my other computer running Linux and my server can ping that computer too.
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Oct 19, 2010
My problem is i use a command " route add -net to add a route oand gate way, how do i remove the route addid if it is incorrect but also my pc's use a standard static ip 192.168.1.X but my gateway is as a given 196.215.X.X if i add this gatway there is no internet but the same gateway is used on windows pc's
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Dec 27, 2009
i have installed openSUSE 11.2 on a dell dimension 2400. My Ethernet card wasn't working, so i am using a wireless interface, but it doesn't work either. It worked on a dell dimension 4400, but when it gets to the activate network my system freezes. Should i re-install my system, or should i post this under the hardware category.
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Mar 9, 2010
Right now I cannot ping to my default gateway. The machine also has SuSE installed on a separate partition. Networking with the same parameters runs fine in that installation.
I use a troubleshooting checklist for situations like this:
- network troubleshooting checklist
- (case of wired connection with static ip)
- make sure net cable is well plugged in on both sides. CHKD.
- make sure ifconfig eth0 details the static IP you want set and that the iface is running (this stage is quite a head start if you've got to it. It would suggest that you have rc.inet1.conf set up properly. CHKD.
- HAL checked against eth0, and it also specifies eth0 for this interface.
- no problem pinging to 127.0.0.1
- type "route" and see if your default gateway comes up. SEMI-CHK: it does come up but takes a long while .. that's bad sign. It still means your rc.inet1.conf is OK, but here's something else up.
- check /etc/resolv.conf for your nameservers .. just in case some over-zealous program has decided to overwrite it. CHKD, all OK .. I use the google nameservers 8.8.8.8 and 4.4.8.8
Despite using what I thought were decent tools of the trade, if I unplug the cable they give the same output!
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Apr 25, 2010
I would like to have a sms gateway that is sending sms without using a cellphone(GMS) on my side.
Is there a pack that can be used this way?
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Feb 12, 2011
I've got a Gateway CX2724. The sound works perfectly out of the speakers and headphones, but I can't get the internal mic to work for the life of me.
I asked around on other threads and tried a few modifications to /etc/modprobe.d/alsa-base.conf and none of these get the mic working when appended:
From the ALSA-Configuration instructions
Code:
options snd-hda-intel model=ref
Ideas taken from this thread
Code:
options snd-hda-intel probe_mask=1
Code:
options snd-hda-intel model=test enable-msi=1 probe-mask=1
This also doesn't work (modified from this thread.)
Code:
options snd-hda-intel model=ref probe_mask=1 position_fix=1
This also doesn't work (from "Extra Hints to get sound working.")
Code:
options snd-hda-intel model=laptop position_fix=1 enable=yes
When I use alsamixer to turn "mux" all the way up and have my headphones plugged into the microphone jack (don't have an external mic... ) in the front of the computer, I am able to record things but the volume is greatly muted. Perhaps the external jack is set to default for the microphone instead of using the internal mic?
I also have the output for alsa-info.sh if you want it - this was mentioned in the alsa configuration file (/usr/share/doc/alsa-base/driver/ALSA-Configuration.txt). Info about alsa-info.sh here.
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Aug 16, 2010
Ok I am a complete Noob when it comes to anything other than a windows based unit, so please be patient with me. I am able to connect to the Internet using a wired connection.
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Feb 1, 2011
we have several servers working on 172.15.2.X series .Our mail server ip is 172.15.2.4 & plateform is linux as it is squirrelmail server.other server which have the same series of ip are working on win2k3 plateform.however I try to recognise this problem by iptraf tool but can't get positive result.
Sometime the ip of all 172.15.2.X series could not ping from outside and LAN as well .
We has been temporarily resolving this problem by
1 changing gateway on all servers as well on firewall.
OR
2 change the ethernet card on mail server and configure same ip on new one .however we have only two NIC card on mail server .The problem resolved temporarily for one OR two hour after it same problem on that card also.than again we have to do same step on switching on another NIC card and reconfigure IP and do down first one.
OR
Take shut down for few time the mail server. But by these all above are not permanent solution BKZ After few hours mailserver starts blocking the gateway again. Than we want to know that what issue can be with this server
1 Are we need to configure VLAN?
2 Is that hardware problem?
3 Is this traffic overflow problem whcih is chocking the gateway of whole network machine having same gateway?
I am sending the few attachment to you please revert ASAP.But keep in mind one thing that attached document indicate the good running mailserver configuration.may be you could not found any problem in this conf.
In order to resolving this problem I have tried by changing duplex mode to
1 > 1000 MB/ps full duplex utonegotiation off
&
2 > 1000 MB/ps full duplex autonegotiation on
but can' get positive Result. I have also tried by IPbinding but it was useless. I think some thing wrong is happening in mailserver which make gateway chocked and 172 series server got also affected by this because they could not get path of gateway as it got choked by mail server's over broadcasting .Although I have make ready the old mailserver it is working but it is cabinet server & not reliable so please suggest for that problem.
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Jun 4, 2010
Basically I'm working as part time administrator in a company, and still am at college. To keep the story short, the company I work with used to have a linux gateway, namely Untangle. We tried to upgrade to E-Box, which is supposed to have more options than Untangle, but it doesn't seem to work as it should. What I'm trying to ask here is this. I need a gateway system that handles QoS, Content filtering, Mail Filtering, DNS, Wan failover / load balancing, LOGS (important), Firewall and maybe the handling of separate users or groups. The ideal solution would be one that like the E-box, has a central control system, without the need to adjust code in CLI for configuration. I have some experience on CentOS and Fedora, so I am able to do some configuration, like installing Samba, DHCP and VNC.
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Sep 16, 2010
I can very well configure squid transparent proxy on gateway server.But i want the squid transparent proxy on non-gateway system as i already have hardware firewall installed.i.e i want to redirect all the traffic coming through my gateway (hardware firewall) 192.168.200.1 to my squid server 192.168.200.3 on port 3128.How it is possible? Without transparent proxy by directly giving proxy ip in browser i can access internet but how to do it in transparent mode?
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Jul 6, 2010
I got connecting to our NAS over NFS working perfectly. Direct NAS Reading & Writing - How? But on Saturday I found out it had stopped working. For no apparent reason, not straight after an update either I don't think. When I manually try to mount --verbose:
mount 192.168.100.14:/IHL /mnt/IHL --verbose
mount: no type was given - I'll assume nfs because of the colon
mount.nfs: timeout set for Tue Jul 6 14:48:32 2010
mount.nfs: text-based options: 'addr=192.168.100.14'
mount.nfs: Unable to connect to 192.168.100.14:111, errno 111 (Connection refused)
mount.nfs: mount to NFS server '192.168.100.14:/IHL' failed: System Error: Connection refused
Corresponding fstab line that used to work just fine. 192.168.100.14:/IHL /mnt/IHL nfs auto 0 0 For now, I can drop back to Samba but this is a PITA as I can't open OpenOffice documents and write to them directly on the NAS. The fact smb://192.168.100.14/IHL works proves networking wise we're cool too. There is no firewall between this PC and the NAS, the NAS is instructed to allow my PC's LAN IP full access. OpenSuse's software firewall has been told to allow NFS Client too. Why would this setup break out of nowhere? How can I debug this best? I see nothing relevant in /var/log/messages How can I get it to work again? A hopeful reboot didn't do its usual wonders...
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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
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=4 ttl=64 time=0.015 ms
Is the gateway doing something strange?
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