Questions tagged [tunneling]
tunneling refers to a mechanism in which one network protocol encapsulates a different payload protocol.
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ssh tunnel: listening on the ssh server [migrated]
Here is what I am trying to do:
ssh me@server1 4000:server2:4000
With this command, I can connect to server2:4000 by connecting to localhost:4000
What I want to do is to connect on server1:4000
Is ...
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SSH over HTTPS or Directly open Non Standard port
We have a situation where we have an architecture that calls for a Web based UI for querying some data and the data input is through rsync over SSH. I think it would be easier to manage and more ...
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What is the better tunnel endpoint?
I'm trying to understand the consequences or implications of setting up tunneling endpoints for the below topology. The tunneling may be used for anything (encryption, VPNs, etc.) assuming the general ...
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If a computer gets infected with malware, can the host firewall block the malware from communicating back to its controller on the internet?
I'm trying to figure out how secure a host firewall is, hence the question in the title.
I read that many firewalls allow outbound connections to port 80 to allow browsing, would that be enough for ...
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ProxyCommand implemented in which OpenSSH Version
Scenario:
You as a pentester are in a situation where you want to do multi hopping to jump over several ssh servers to your target. The systems are somehow outdated so you want to check what you can ...
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Are all encrypted tunnels also considered virtual private networks (VPN)?
A few days ago, a colleague and myself were having a discussion specifically on site-to-site VPNs. My understanding, and how I was taught, are that all encrypted tunnels are virtual private networks ...
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Does opening an IPsec tunnel compromise the rest of my VPN?
Let's assume:
I allow all of my VPN users to connect to various internal services (VPN's IP is allow listed)
My VPN will be connected to a 3rd party network via IPSec Site-2-Site Tunnel. The purpose ...
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Best way to avoid DPI/tunnel detection?
guys, I live in Russia and that pretty much says it all.
I was using a standard self-hosted VPN on a DO droplet, but now I'm afraid that since VPN usage in Russia started to spread like a wildfire ...
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How to set up a restricted account for reverse SSH port forwarding in a safe way?
I have a server (M: Main) that I trust very much (I have it home, locked, with an alarm, etc), to which I can SSH from the internet.
I also have a number of "remote servers" and "IoT ...
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Force connetion through SSL Tunnel [closed]
All machines are Linux-based.
I want to force ssh (or telnet) to the 192.168.100.20 server from the laptop through the SSL Tunnel. What command should I use?
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Can I use a VPN to access services only available to a specific network? [closed]
I am a member of a library which has access to online databases that I use for work. The databases can only be accessed when you are on library's WIFI network. If I try to use the same databases from ...
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Could someone the real IP address when using tunnel protocols like ngrok, localtunnel or serveo?
Could someone get the real IP address that is hidden behind the URL generated by tools like ngrok, localtunnel or serveo?
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How can you attack or redirect the client from the server over an RDP or SSH conneciton? [closed]
I have a penetration testing scenario where I am on the network with two machines, Machine A and Machine B. I have complete control over Machine B and am trying to leverage that to get access to ...
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SQL Server connections with TLS vs. through an encrypted tunnel?
I'm developing an application that will connect to Microsoft SQL Server in a local network:
I'm considering whether these connections need to use TLS
Or whether to leave it to the customer's ...
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SSH reverse tunnels: can the intermediate server eavesdrop on an SSH session?
Suppose there are three computers: (1) my laptop, (2) a server that has a public static IP address, and (3) a Raspberry Pi behind a NAT. I connect from (1) to (3) via (2) as explained below.
On the ...
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pivoting without metasploit to get reverse shell
I have an exam next week. I need help.
This is my lab:
attacker machine (kali) : 192.168.1.81
1st hacked machine (Windows 10) : 10.10.10.130
target (Windows 7) : 10.10.10.135 (...
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Is HTTPS over LAN effective?
From my understanding, while HTTPS does not stop a mitm, it makes it so the mitm cannot read the plaintext requests. But, the mitm could still tamper with the public/private keys anyways, so in came ...
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Security practices with ngrok?
I know many developers use a tunnelling software called ngrok, yet many don't know how it works or what it's doing. An example of its use is in testing webhooks on a development server
I found this ...
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Tunnel between two applications, one of them is a 3rd party app
I have written an application, that calls a 3rd party application with process.Start().
Inside the Arguments I pass needed credentials.
like so:
proc.StartInfo.Arguments = $"-c: -h: -x: -m:{...
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Attack scenario when using split tunnel VPN
Background
As many others I am working from home and we use a VPN to access services from the company intranet (SMB fileshares, git repo, project management etc).
To improve things like video calls I ...
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Is accessing Cockpit through SSH tunnel secure?
I can't find a definite answer on accessing cockpit from outside machines securely. Just allowing it through the firewall like that doesn't seem safe. It only uses basic user and password ...
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WireGuard / CVE-2019-14899: How secure the protocol really is?
I've been using OpenVPN and SSH tunnels for a multitude of scenarios over the years and recently I've been earning a lot of buzz around the simplicity and security of WireGuard. Now I've found some ...
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Managing SSH private keys on a public host
I have a web server which is running on a private subnet in AWS VPC, let us call it worker.
I can access the worker VM through a Bastion VM which is in the same VPC but in a public subnet.
Then, I ...
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StrongSwan, IPsec remote certs and cert_policy
I'm looking for a way to limit the certs that my IPsec can accept. I'm using StrongSwan (swanctl version 5.7), I want to accept only certs coming from a remote with a name of yoji.*.example.com
I ...
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Disable Encrypted Protocols Through Firewall
In my company, we have two internal domains with a firewall between them. When requesting firewall rules for an application with components on domain A and domain B, I was told that encrypted ...
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Custom IPv6 network and security risks
I draw a custom network (I would use that for developing and testing, my ISP does not support IPv6), there IPv4 and IPv6 are present.
'A' device has firewall: incoming blocked, only accept access (SSH)...
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Automatically change connection of VPN when accessing certain websites
So I am quite new to VPNs, just downloaded and installed NORDVPN despite the latest admission of security breach for a trial period.
I am also running BitDefender TS on my computer.
I wanted to know ...
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Is it possible to tunnel my whole linux machine through http proxy? [closed]
For some reason i access my internet through a HTTP proxy.
Is there a way to tunnel my whole Linux machine (currently am using ubuntu 18.04) through http proxy.
If i change proxy setting in the ...
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Split tunneling to speed up Windows update
We have almost 10 years worth of Win7 updates that need to be done and the amount of bandwith can't be handled by our VPN. Are the security risks of enabling split-tunnel a lot smaller when its just ...
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Why is GRE tunneling is needed when having a BGP based solution against DDoS?
I understand that GRE tunneling is very handy when sending the data back to the client after scrubbing because it's designed to ensure that the data is sent reliably by initiating a private point-to-...
user168683
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how to force openvpn client to use TLS instead of SSL connection [duplicate]
i'm trying to use openvpn client to connect TLS VPN server
here is my .ovpn file
client
tls-client
dev tun
proto tcp
remote example.com 443
resolv-retry infinite
auth-user-pass
persist-key
...
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What's the difference between SSH tunneling and login into the same SSH server and executing commands?
Consider these 2 scenarios.
(1)
Let's say I login into an SSH server named A normally using
ssh [username] @ [IP address of A].
And now I connected to another server named B which is accepting ...
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What's the security concern of browsers using the HTTP CONNECT method?
The XMLHttpRequest spec says that attempted usage of the CONNECT method should throw a security error.
Is there a security issue with client-side JavaScript sending CONNECT requests to servers? It ...
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Deanonimizing VPN/tor traffic [duplicate]
What a VPN does is take the encrypted traffic from the client, decrypt it and forward it to the server, while tor bounces the traffic in multiple nodes decrypting a layer at each node.
I have some ...
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Problems with getting reverse shell
I got a badUsb, my current solution is: it downloads netcat.exe and establishes a netcat connection between test-box and me with the help of localxpose tunneling (when I'm not in the same network).
...
user187425
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VPN vs SSH tunnelling for hotel wifi
I know it's recommended to use a VPN with a hotel WiFi but if I'm in a hurry and don't have time to setup my own VPN server would an SSH tunnel (invoked with ssh -D) work just as well to secure my web ...
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Is telnet secure through SSH tunneling
Firstly sorry, maybe dumb question, but I have one service running on my server which can be operated only by telnet (port 23), but I know that telnet is insecure, so I blocked port 23 in iptables ...
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Is the same key used for Authorization and Encryption? (SSH Tunnel)
I am a bit confused on how SSH encryption works.
From reading this question, I see you can use a private key to authenticate with the -i flag.
I also know think that SSH encrypts data using ...
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Tunnel ssh over http with custom headers
I'm trying to set up corkscrew to make an SSH tunnel over HTTP, but I need to add custom headers after the "CONNECT" statement and before the ssh tunnel.
Does corkscrew support it? If yes, how can I ...
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How to obfuscate SSH tunnel Mac?
I am looking to test a DPI (deep packet inspector). I currently have it set up to block SSH connections (which it does successfully).
I have learned that DPI can be bypassed by obfuscating/encrypting ...
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Are there any feasible ways to block the stunnel utility at the network level?
The stunnel utility written by Michał Trojnara allows, if I understand correctly, to "wrap" non-SSL protocols (such as ssh) in an SSL connection.
For example, imagine that all network ports on a ...
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Tunneling SSH over Shadowsocks
This post on unix.se explains how to tunnel SSH over shadowsocks.
This post on sec.se discusses some of the vulnerabilities of shadowsocks (namely its vulnerability to brute force).
After reading ...
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tunnelling HTTP request through DMZ from a secured area
In my topology I have a secured area where all the servers are. There is also a DMZ with a few reverse proxy servers. I now need to make one of the servers in the secure area open to make HTTP calls ...
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Negative consequences of forced encryption of unencrypted secvices
Are there any negative consequences to encrypting an unencrypted service/protocol like FTP, VNC, telnet, and so on by using forced encryption like ssh tunneling or OpenVPN tunnels?
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In DNS Tunneling, What's the DNS Response packet size?
In DNS Tunneling server use RR (CNAME, TXT, NULL) to send back data to the client. My question is what's the size of response packet and how much data can be sent using DNS response in DNS Tunnel ?
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Trying to tunnel a reverse shell out of an internal network
I am practicing performing a pentest and getting stuck trying to get an interactive reverse shell from an internal machine to my attacker machine.
This is what I have done so far:
Me(attacker): 67....
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Pivoting with Metasploit
I am trying to exploit a Windows VM on a different subnet behind a dual home Linux VM where I already have a shell. To keep it simple, I have a meterpreter reverse_tcp shell on the Linux VM (192.168....
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VPN tunneling, routing and sniffing
I did not understand some things regarding the VPN.
How is the VPN tunnel established? My computer and the end VPN server need to exchange some info to establish a tunnel? (some kind of handshake or ...
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DNS Tunneling - Mitigation
I believe the root cause for DNS tunneling is because the internal hosts are allowed to do recursive queries of external domains. For DNS tunneling to work, an internal host should be able to send ...
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Is it sensible to tunnel TLS traffic over another TLS?
I'd like to secure my application's traffic using TLS with pre-distributed self-signed certificates (as a drop-in replacement of plain TCP).
In some cases, two clients won't be able to talk to each ...
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