The tunneling tag has no wiki summary.
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How to troubleshoot GRE tunnel issues?
I commonly run into issues where a GRE tunnel (CentOS server to server, not router based) works and pings fine from both ends but the IP / Range being tunneled does not function.
This almost always ...
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2answers
64 views
Windows Jump Host
A Jump Host is a special purpose computer on a network typically used to manage devices in a separate DMZ. So, I'm looking for the proper way to implement this for a target running on Windows.
I was ...
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0answers
30 views
Command to check tunnel is alive or not? [closed]
I used this two commands but not got any idea.
COMMAND="ssh -p $SSH_PORT -q -N -R $REMOTE_HOST:$REMOTE_HTTP_PORT:localhost:80 $USER_NAME@$REMOTE_HOST"
pgrep -f -x "$COMMAND" > /dev/null ...
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0answers
14 views
SSH Connection, Tunneling and Shell Access [duplicate]
It is possible that I might misuse a term while asking this question; I ask for your patience.
At work, a colleague set me up with a program called plink.exe so that I can connect to an SSH server ...
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1answer
37 views
Forwarding SNMP ports over SSH
I access my work network through a VPN and have access to every host in there through SSH. Currently I need to access around 3000 hosts via SNMP, but corporate sec policies restrict SNMP access ...
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1answer
49 views
SSH Tunnel can't connect - connection times out, even though regular login works
I am trying to set up an SSH tunnel with a SOCKS proxy in Firefox, so I can surf the internet securely from public wifi. Both client and server are running Ubuntu 12.04 LTS.
After setting up port ...
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0answers
77 views
Can I tunnel all traffic through an OpenVPN TAP connection?
We require a TAP setup in order for NetBIOS, Bonjour, and CIFS to function across our OpenVPN client/server connection. I am aware of the technical differences between TAP and TUN. But I was ...
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2answers
96 views
What is the difference between SSH and SSH Tunneling
As the title says, I don't really understand the difference between them. For example, if I connect to a specific server through SSH without tunneling I get the same shell as I get with tunneling.
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1answer
144 views
strange output on ssh tunneling: output failed; connect failed: Connection timed out;
I use ssh user@xx.yy.zz.41 -p 1234 -D 9898 command for tunneling, and I set firefox socks5 ip to 127.0.0.1 and its port to 9898. It works successfully ,but in terminal I have error in output:
...
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37 views
what are determined by USER and GROUP options for tun/tap device?
During the creation of tun and tap interfaces one can specify USER and GROUP for the device. For example:
# ip tuntap add mode tap dev tap0
# ip tuntap add mode tap dev tap1 user martin
# ip tuntap ...
0
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1answer
120 views
Route all internet traffic through SSH tunnel
I currently have set up an Amazon EC2 Virtual Private Cloud. Because of IP limitations I can't provide all the instances in the VPC an elastic IP. I have one public facing server and I have a bunch of ...
0
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1answer
211 views
why is stunnel doing this
I am trying to setup stunnel to encrypt traffic from rsyslog (using the relp protocol), but whenever I try starting stunnel and sending logs to the remote server, i get the following:
Remote ...
2
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1answer
135 views
Does a HTTP tunnel solution exist that doesn't use CONNECT, HTTPS or chunked encoding? [closed]
I am looking for a way to get a fast OpenVPN connection out through a restrictive firewall (this is not a workplace and I am not breaking any code of conduct).
Currently I'm using port 443 direct to ...
1
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1answer
440 views
SSH tunneling with Synology
I try to tunnel SMB and AFP services through SSH to acces my NAS shares on my machine.
I already do it successfully with my ReadyNAS using the following command line (ran as my user on my mac) :
ssh ...
0
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1answer
42 views
Rp_filter and linux tunneling
Can someone please explain with an example why reverse path filtering need to be disabled while using IPIP/GRE tunneling?
echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter
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0answers
25 views
access a firewalled network [closed]
i have to access a network which is behind a firewall. Any techniques how I can do this? I am thinking of doing a ssh reverse tunnel and then passing a layer 2 OPENVPN through it. The problem is that ...
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1answer
195 views
How to make a tun interface with ifconfig in OSX? [closed]
If I try to do this I get the following:
bash-3.2# ifconfig tun0 10.140.1.40
ifconfig: ioctl (SIOCAIFADDR): Destination address required
It sounds like this doesn't happen in Linux (probably this ...
3
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1answer
64 views
secure connections between vps servers
I have four VPS servers. Two of them are replicated glusterfs server and the other two are glusterfs clients.
What I want to do is to encrypt all communications between glusterfs servers and between ...
4
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2answers
123 views
How to link multiple SSH tunnels together in Linux
I have the following situation:
A -----|------ B -----|------ Work
Work can SSH into B, and A can SSH into B, but apart from that everything is firewalled. What I would like to do is in effect ...
-1
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2answers
80 views
How to bypass AllowTCPFowarding=no by installing own forwarder? [closed]
In the man pages for sshd_config, for the AllowTCPForwarding option, it states:
AllowTcpForwarding
Specifies whether TCP forwarding is permitted. The default is “yes”. Note that disabling ...
1
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1answer
206 views
Ssh socks server doesn't work [closed]
I want setup socks server on my localhost which forward all http traffic on my remote server for bypass firewall rules at my work net.
And so I start it as usually
sudo ssh -C2qTnN -D localhost:8080 ...
3
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2answers
129 views
IPv6 tunnel broker setup
I'm working on a solution to allow remote Linux nodes that are behind firewalls to be accessible for SSH and web server.
Can anyone suggest an IPv6 tunnel scheme that would work with NAT firewalls? ...
0
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0answers
37 views
Local client application unable to talk to cloud servers via port forwarding
I often connect to servers in the cloud and I am able to access web management consoles for particular applications installed on those servers by configuring tunneling in PuTTY. This way, I can ...
0
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1answer
1k views
Trouble with site-to-site OpenVPN & pfSense not passing traffic
I'm trying to get an OpenVPN tunnel going on pfSense 1.2.3-RELEASE running on embedded routers.
I have a local LAN 10.34.43.0/254. The remote LAN is 10.200.1.0/24. The local pfSense is configured as ...
2
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1answer
627 views
IPsec tunnel to Android device not created even though there is an IKE SA
I'm trying to configure a VPN tunnel between an Android device running 4.1 and a Fedora 17 Linux box running strongSwan 5.0. The device reports that it is connected and strongSwan statusall returns ...
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0answers
223 views
Reverse SSH tunnelling for browsing the internet on a distant server without internet connection
I need to connect myself (Mac OSX) through SSH on a distant server (Unix also) which has no internet access.
I would like to browse the internet on the server (updates and other stuffes), so I've made ...
0
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0answers
163 views
Reverse tunnelling with “stunnel” in linux
Scenario:
Central Log-Server(say logserv)- only private IP interfaces
Multiple client servers (logclient)- has public IPs.
Requirement:
Need to tcp logs of syslog application from logclient to ...
2
votes
1answer
510 views
What is the purpose of netcat's “-w timeout” option when ssh tunneling?
I am in the exact same situation as the person who posted another question, I am trying to tunnel ssh connections through a gateway server instead of having to ssh into the gateway and manually ssh ...
0
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1answer
181 views
Which software could I use to setup a 4in6 IP tunnel (RFC 2473) on GNU/Linux
Here is my problem. I have a server A that has two IP addresses. One public IPv4 and one IPv6.
Server B has only one IPv6 address.
I want to host most of my services on server B (because I have more ...
0
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1answer
2k views
How to share internet over VPN and inside a virtual machine (Windows)?
`
My final goal is to have a virtual machine at work in which anything that happen inside (tcp, udp, ping, ...) will use the Internet connection of a computer at home. So, if inside this VM should I ...
2
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1answer
105 views
How to silently buffer tunnel traffic on network split, and automatically renew the connection when possible?
I have a slow connection between two machines, one in Germany and another in China. Connection sometimes breaks apart, and the packet loss is about 5%, at times even reaching 20%. Chinese machine has ...
0
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2answers
261 views
Tunnel an SSH connection transparently (no ProxyCommand)
Here's the scenario: the user runs "ssh -i sshkey user@server1". I want the SSH connection to be tunneled through server1 to server2. Normally, the user could do this himself using:
ssh -i sshkey ...
1
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1answer
214 views
IP Tunneling for SMTP server on Windows 2008?
I have a Windows 2008 server that is running an SMTP server. The server has a public IP Address. I have 2 other windows servers, not in the same network, that are used for hosting client applications. ...
0
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2answers
52 views
Will Tunneling help in this scenario?
I have a computer running 24 hours at a site protecteed by firewall, this computer call it 'A' can connect to internet but unable to host a site since the port is blocked.
I have an idea to purchase ...
0
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0answers
45 views
vnc tunneling and port forwarding
I have two machine say A and B. machine A is a public gateway. machine B is in my network and running VNC server on port 6000. I want people should connect on machine A on VNC port say 5900 ...
0
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1answer
213 views
OpenVPN - Client connected to server, but not tunneling
For context, I am migrating my VPN server. I duplicated the old set up almost exactly, and now clients connected to the new VPN server cannot tunnel properly (but they connect just fine).
While ...
1
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1answer
85 views
Am I obliged to use ipv6 tunnel services if I want to be able to use it?
I was looking for configuring Slackware to use ipv6 but all instruction I found speak about using an ipv6 tunnel that encapsulate ipv6 request into ipv4 packet and send them to an external router that ...
2
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1answer
85 views
Create a tunnel to my dedicated windows server
I have a Win 2008 dedicated server. The remote access for MSSQL db is disabled. However I want to connect to it during development from my system. I need to create something like a tunnel from my lap ...
1
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1answer
53 views
Info on SSH tunelling etc in certain context
Im an electronics engineer, with very little knowledge of networking and assoc. terminology
I recently got a Lantronix XPort Pro for use in a project I am working on but have little to no knowledge ...
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2answers
313 views
Multiple authoritative DNS server on same IPv4 address
I'd like to maintain a DNS tunnel on my self-hosted server at example.com. I also have a DNS server on it, which serves everything for example.com.
I'm currently using dns2tcp for DNS tunneling, on ...
1
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1answer
81 views
Secure tunneling options between datacenters
My setup is main website server in one datacenter and mirrors in multiple other datacenters.
I'd like to know what are my options to transfer traffic secure and stable between servers?
Ssh tunneling ...
6
votes
1answer
1k views
mosh tunnel via proxy
I'm a growing fan of mosh and am increasingly using it when I have unreliable wifi links. What I am trying to figure out is how to build a tunnel through a server which is in a DMZ (connected to ...
0
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1answer
132 views
Using OpenLDAP's meta backend to map incoming user to someone else
I am attempting to set up an LDAP "tunnel" to work around an application that requires a configuration slightly different to my environment.
I need to be able to bind as USER1 to an LDAP server & ...
0
votes
1answer
548 views
VoIP Tunnel Implementation for SIP Client
I am planning to provide an option for tunneling in my SIP client. I have tried to search on web for open-source implementation of this, but couldn't find one.
My questions are:
1) If I go writing ...
0
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3answers
769 views
Keeping an SSH Tunnel open, and running a remote command
A computer behind a firewall (at a remote location) connects to my server to open a tunnel... the intention is that from the server I can connect to the computer over SSH.
The computer makes the ...
1
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1answer
209 views
VPN, Tunneling to hide 'real IP' through my proxy server while showing the client IP on 'real' server side
I would like to hide my 'main server' behind the load balancer, call it 'proxy server'
Although I use some closed-source software on 'main server' and it needs the client IP address to operate well.
...
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1answer
88 views
Bizarre client IP switch-up on VPN
Let A.B.C.D be the public IP of my VPN server. Let W.X.Y.Z be the IP of the client before it connects to the VPN.
My VPN server's IP address on the LAN in 10.8.0.1, and the client is 10.8.0.6. I ...
0
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1answer
45 views
How Tunneling can be configured or set up in this scenario
I have a scenario like there are two servers
1.On the first server where apache and tomcat are running on different ports.For eg ip would be 172.168.2.19
2.There is a second server where jboss and ...
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1answer
62 views
what is HTTP tunneling and the importance of tunneling [closed]
what is HTTP tunneling and how to configure it
where is this http tunneling used and the importance of http tunneling
3
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3answers
110 views
SSH port forwarding through Windows machine
is it possible to connect to an SSH server only accessible from inside a network, using a Windows machine without SSH as a gateway?.
Let me clarify my question with a sketch:
Me (Linux machine)---> ...
