2
votes
0answers
110 views

Detect network clients connect and disconnect

I have a linux gateway/server, which sharing PPPoE internet connection between network users. Seeking for a proper way to detect when network clients are connected to and disconnected from the ...
1
vote
1answer
321 views

ppp0 strange default router address

I'm using 3G-modem to provide an Internet connection to my Linux box. So, when I issue ifconfig command, I see the following: ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 ...
1
vote
1answer
98 views

Cannot setup ssh gateway

I am trying to setup a ssh gateway. I have a physical host (H) and a number of VMs on it. The host can ssh to one of the VMs (A) and then ssh to others from it (lets call it B). I have this in ...
0
votes
1answer
51 views

What does gateway mean in linux route table?

Does it mean the next hop of the route? Can the gateway be the next next hop, if there is an internal router in the private network?
2
votes
3answers
3k views

Why there is only one Default Gateway?

I am novice in networking trying to figure how multiple network interfaces work. My doubt is when there are two or more NIC's on a machine, what is the meaning of default gateway present in the ...
0
votes
0answers
49 views

Host Not reachble on a Network Interface

I have two network interfaces on my linux system. When I select eth0 as default gateway , everything works fine. I can connect to the system from other computers, but when I select eth1 as default ...
1
vote
0answers
270 views

iproute nexthop not working - defining multiple default gateways

I have several point to point connections and I'd like to use all of them as default gateways. I saw this link which explains how to do this using load balancing by calling ip route with a nexthop ...
0
votes
1answer
97 views

Network communication slowdown after setting gateway on linux

We have two computers in local network, which need to communicate via TCP/IP. Communication is working regularly until we set up the gateway; TCP communication is much slower (takes 10-20 seconds for ...
1
vote
3answers
521 views

How to make my Ubuntu an internet gateway for my Android phone

I want to use the internet of my school on my Android, the problem is they have a Squid proxy, and many applications on my phone don't use the proxy at all. The obvious solution is to install a ...
0
votes
0answers
214 views

Debian + Unknown host google.com using bridge network

I am trying to install Debian Linux based OS in my XP machine using VM Ware and I trying to setup bridge connection to access the network. But I am getting the error "Unknown host google.com". ...
-2
votes
1answer
293 views

IP tables gateway

I am trying to make an iptables gateway. I ordered 3 dedicated server from my hosting company all with dual nics. One server has been given all the ip addresses and is connected directly to the ...
1
vote
0answers
184 views

Load-balancing: response packets not routed - iptables

I have a problem with iptables. I'm trying to setup a load balancer between 2 uplinks. I can mark packets and connections, use ip rule to choose routing table (so changing the gateway). But, when I ...
1
vote
2answers
2k views

Linux route add between static LAN and Wifi Gateway

I have two local machines connected to each other via wired ethernet and one of those machines is also connected to a wifi network which provides internet access. A pseudo-graphical representation ...
3
votes
1answer
185 views

Using a Ubuntu AWS instance as tunnel for RDP to simulate bandwidth

I have a bunch of windows instances on EC2 which I can connect to using RDP. I want to test the performance of RDP under various bandwidth and latency conditions. I know about thetc qdisc tool which ...
2
votes
2answers
632 views

Iptables port mapping from two PCs to one

We have 3 PCs, two of it are connected to internet (both of it have 2 NIC) PC1: eth0 - 1.0.0.1 (external IP) eth1 - 172.16.0.1 (internal IP) PC2: eth0 - 1.0.0.2 (external IP) eth1 - 172.16.0.2 ...
0
votes
2answers
294 views

DHCPD (Slackware) - Disabling auto-generation of gateway as DNS server

Good day, I am using a Linux workstation on Slackware 13.37. One "problem" I have had to deal with ever since 11.0 is the following: DNS servers are queried and determined at startup by DHCP ...
0
votes
1answer
584 views

Cant route into WAN with IPCop Router

i try to setup a IPCOP Router but i can't access the WAN from LAN but the LAN from WAN works fine. Example: WAN IP from IPCOP 192.168.1.130/26 WAN IP aliase from IPCOP 192.168.1.131 ... 190 /26 WAN ...
11
votes
3answers
8k views

How can I ping via an alternate gateway?

Our network has two modems, each one hidden behind a router. The primary router is on 10.1.1.1, the backup router is on 10.1.1.2, and are both configured to the 10.1.1.0/24 subnet. Both routers have ...
-1
votes
2answers
425 views

How to tell Guest OS to treat USB port as network card?

Computer 1 Motherboard 845GBV Host OS Windows XP Guest OS Linux slackware (via Virtual Box) Network via USB modem USB port 3/6 Computer 2 Motherboard Asus P7P55D-E Pro OS ...
3
votes
2answers
1k views

2 gateways 1 nic Ubuntu

Please note that this is ONE NIC and TWO Gateways Now this solution is super easy in Windows: * Connection Properties -> TCP/IP Properties -> Default Gateways -> Add (separated by metrics) I notice ...
3
votes
1answer
914 views

Linux: multiple network connections - 3G/4G / Wifi / LAN / etc; how can i set a preferred network connection to use?

I've been looking at how I can setup a laptop that has multiple network interfaces, but a problem exists if all the connections are active, i.e. 3G, WiFi and LAN are all connected, I would like it to ...