Tagged Questions

0
votes
0answers
28 views

PBX randomly loses network connectivity and restores itself

I'm using a QBX appliance, which is just a microATX desktop system with FreePBX connecting to asterisk and some other slapped together stuff running on CentOS 5.4. It's horribly out of date (which I ...
2
votes
3answers
79 views

SSH is suddenly not working anymore: “Write Failed:Broken Pipe”

I use a macbook pro at home and regularly ssh into the machines at my lab. For the past 3-4 days however, whenever I SSH into the machine in the lab, I get a Write Failed:Broken Pipe error, hardly ...
0
votes
2answers
26 views

can't update with this error messg

I got this message: not enough free disk space.... The upgrade needs a total of 31.8 M free space on disk '/boot'. Please free at least an additional 31.8 M of disk space on '/boot'. Empty ...
1
vote
2answers
143 views

How to transparently monitor SSH access/network traffic in Gentoo/general linux?

What's the most effective way to monitor SSH access in Gentoo Linux? My Gentoo box is operating locally behind my broadband router. I have SSH port forwarding on the router and a DNS entry pointing ...
0
votes
0answers
56 views

Local host always being added to /etc/hosts.deny when trying to SSH

I have a rather odd problem with my server. For some reason the local hostname for my workstation keeps getting added to the /etc/hosts.deny and when I try to SSH I get: ssh_exchange_identification: ...
2
votes
2answers
61 views

Remote access SSH problem

I have been asked to setup a lab with 1 PC (fedora 18 OS) and 4 SGI (IRIX 6.5 OLD OS). I am using a switch to connect them to university's network, and I asked tech guys to assign static IPs to them. ...
2
votes
1answer
130 views

Route SSH to host through interface

is it possible to route all outgoing requests for SSH (port 22) to mydynamicdns.afraid.org via wlan0 instead of eth0 when both are connected? Since my IP is dynamic, I would like to use a name ...
3
votes
1answer
197 views

Tunnel AFP over SSH over Internet

I can't seem to figure out how to connect to AFP over SSH. Here is my setup: [Raspberry Pi] <---> [router] <---> (Internet) <---> [Client] I'd like to be able to connect to my ...
7
votes
3answers
149 views

OpenSSH - map aliases in ~/.ssh/config to IP addresses in command line

Is it possible to query ~/.ssh/config in the command line? Let's say I would like to retrieve what IP address does the particular alias point to in a separate program, is it possible?
2
votes
1answer
253 views

SSH locking up: suspect local problem, not remote

On my work computer, I regularly SSH into two unrelated servers. Sometimes the SSH session locks up (does not respond to keyboard input). When locked up, I can SSH in via a second open terminal, that ...
0
votes
0answers
111 views

Host reachable via SSH from my desktop but not my laptop

I try to use ssh to log in to a remote host. This works for my Ubuntu desktop, however, it fails from my Fedora 14 laptop. The failure means after I type ssh username@host and pressed Enter, ...
2
votes
1answer
197 views

How to copy a partition over network

I want to copy a Windows 7 partition that came installed on my laptop to my desktop computer. I've tried: # bzip2 -c /dev/sda5 | nc 192.168.1.1 2222 # on laptop # nc -l 2222 | bzip2 -d > ...
0
votes
1answer
239 views

Why does sshd accept local network inbound connections and refuse external inbound connection?

When I try to connect to my server from the internet, I always get: debug2: ssh_connect: needpriv 0 debug1: connect to address XX.XX.XX.69 port 22: Connection refused ssh: connect to host XX.XX.XX.69 ...
0
votes
0answers
19 views

SSH daisy chaining [duplicate]

Possible Duplicate: Common multiple SSH connections file handling issue I am on a workstation say ws and use two servers A and B. B has most of the tools I need for my work. Although, ...
14
votes
2answers
4k views

How does reverse SSH tunneling work?

As I understand this, firewalls (assuming default settings) deny all incoming traffic that has no prior corresponding outgoing traffic. Based on Reversing an ssh connection and SSH Tunneling Made ...
3
votes
1answer
1k views

How to configure pfsense to NAT servers?

How can I configure pfsense so it will NAT servers so they can be accessed outside of the company? I tried to play around with the NAT settings, but didn't get anywhere. I want to be able to access ...
3
votes
1answer
2k views

Start network service at boot time on CentOS

I've recently reinstalled CentOS onto a computer of mine. I have OpenSSH Server on it now, as did I before I reinstalled the operating system. Here's the difference: Before, SSH started without even ...
2
votes
1answer
416 views

Connection ec2 instance operation timeout error using ssh

After creating a new instance,I am trying to access my instance like below: ssh -i private_key.pem root@my_instance_public_domain but the operation is timing out,I have updated the private key file ...
3
votes
1answer
213 views

How do I transfer files to a SunOS server via sftp with FileZilla?

According to the admin of the webserver, I should be able to use Filezilla to transfer files to the server but I am getting an error. I set up Filezilla for transferring files sftp - using these ...
1
vote
2answers
536 views

SSH into Ubuntu VM remotely

I don't have much Linux or networking experience, but I'm trying to SSH into an Ubuntu virtual machine from outside of my home network. The Ubuntu virtual machine (running inside VirtualBox) is ...
8
votes
2answers
740 views

How to open a port early in boot process to unlock LUKS via SSH

I have a fully encrypted server running Debian 6 and have set up dropbear and busybox to unlock the LUKS container via SSH (as described in this tutorial and in this U&L answer). Unfortunately, ...
1
vote
1answer
154 views

How can I use the same IP from the Internet and intranet?

I have an Ubuntu firewall box (Alma), at the office, with a web server on it. It looks like this: [Internet] <-> [DSL Router] <-> [Alma] | ...
25
votes
2answers
2k views

How does SSH connection survive a network restart?

From a Linux SSH shell, type /etc/init.d/network restart to restart the network service. I expect my SSH connection to die since the network service goes down. But it doesn't. Very cool. But how does ...
2
votes
4answers
593 views

full access to remote computer without remote static IP

How can I access to remote computer that the remote computer is in a local network? I worked with reverse ssh : http://www.vdomck.org/2005/11/reversing-ssh-connection.html I don't want just SSH but I ...
1
vote
2answers
2k views

How to connect two computers via internet with ssh?

I want to connect another computer via internet that doesn't have a public IP. Is there any away to do this?
16
votes
4answers
6k views

How to speed up X over SSH on a slow network connection?

Are there any specific recommendations on speeding up X applications over ssh on a slow network connection? In this specific case, I am accessing a server located in west coast from a laptop in east ...
2
votes
1answer
2k views

How do I recover/kill an SSH session after losing connection?

I lost my connection while I was logged via SSH into my university server. Classic. Now I can't log in since the session appears to be still running and I get the error "Too many logins for ...
3
votes
1answer
189 views

Reverse ip lookup

I was wondering if it is somehow possible to lookup the ip of a machine I ssh'd into from. This is the scenario, I'm at home, I've VPN'd into a server that I ssh into constantly in the office but now ...
1
vote
1answer
101 views

How to “set” this home network mesh up

I don't know much about networking security other than keeping unused ports closed is good. This is what I'm trying to accomplish: I need to be able to keep my server (the dotted line) with limited ...
1
vote
1answer
428 views

Only allow ssh/vpn on OpenWRT

If I don't want to use wireless encryption, but I still want security and I want to use sshuttle (on the clients, see: https://github.com/apenwarr/sshuttle/) for tunneling everything through an SSH ...
3
votes
4answers
864 views

ssh hanging then time out

I am new to ssh on linux. I have two computers connected on a switch. The first one is 192.168.1.2 and the second is 192.168.1.3. When I use the ping command I got a reply and everything is good, but ...
5
votes
2answers
294 views

Configuring a vncserver so it's only accessible from my ssh tunnel

Since I use vnc through an ssh tunnel, is there any way I can block the open vnc port that the remote machine is listening on without it affecting my ability to use the ssh tunnel? Both machines are ...
3
votes
3answers
656 views

Accessing a linux machine with a name (not ip address)

When I access a linux machine with sshfs, I take the following steps. Get the ip address of the linux (the ip address is dynamically allocated to linux) Run sshfs id@ip_address:/HOME_DIRECTORY Can ...