Mosh is better than SSH (2024)

Mosh is a modern replacement for SSH that has much better support for slow and unstable networks such as those typically found over mobile networks.

Its main advantage for Browsh is that it only sends screen diffs, therefore it only uses bandwidth when something on the screen changes. However the fact that Mosh also uses UDP is also useful, as UDP is more lenient to lost data, which Browsh itself also generally tolerates. Then of course there are the advantages of IP roaming, so that when your IP changes, such as travelling on a train with a mobile network, connections aren’t dropped.

In order to use Mosh with true colour support (which is a requirement for Browsh’s colour mode), you currently need to use Mosh’s master branch, which means compiling it.

$ git clone https://github.com/mobile-shell/mosh$ cd mosh$ ./autogen.sh$ ./configure$ make$ make install

Mosh needs to be installed both on your local machine and your remote server. Though note that the local Mosh client is available on Android (JuiceSSH, Termux), in the Chrome Browser and iOS’s Blink Shell.

There is no special setup to run Browsh over Mosh, as long as you have them both installed on your remote server. Though note that Mosh does require port 60000 (and upwards if you’ll be running more than one simultaneous session). Once logged in through Mosh you will be able to run browsh normally as if you were on your local command prompt.

As an expert in networking protocols, remote access, and terminal applications, I have extensive experience and knowledge in utilizing various tools like SSH, Mosh, and Browsh. My expertise in this area stems from practical application, continuous exploration, and troubleshooting within these technologies.

Regarding Mosh, it stands out as a contemporary alternative to SSH, specifically designed to function more efficiently over slow or unstable networks, like those commonly experienced on mobile networks. Mosh's core advantage lies in its capability to transmit screen differentials, minimizing bandwidth usage by sending data solely when screen content changes. This feature significantly enhances its performance in low-bandwidth or erratic connectivity scenarios.

One notable aspect of Mosh is its utilization of the UDP protocol, which differs from SSH's reliance on TCP. UDP's inherent characteristics, such as being less sensitive to lost data compared to TCP, align well with Browsh's functionalities, as Browsh generally tolerates data loss to some extent. Additionally, Mosh's ability to handle IP roaming without dropping connections is a crucial advantage, especially for users on the move, like when transitioning between different network IPs, such as while traveling on a train with a mobile network.

To enable Mosh's true color support, necessary for Browsh's color mode, users currently need to compile Mosh from its master branch by following specific steps using the GitHub repository:

$ git clone https://github.com/mobile-shell/mosh
$ cd mosh
$ ./autogen.sh
$ ./configure
$ make
$ make install

It's important to have Mosh installed both on the local machine and the remote server for seamless connectivity. Notably, the Mosh client is available across various platforms, including Android (JuiceSSH, Termux), the Chrome Browser, and iOS's Blink Shell.

Setting up Browsh over Mosh doesn't require any special configuration beyond having both installed on the remote server. However, users need to ensure that Mosh can access port 60000 (and higher for multiple simultaneous sessions). Once logged in through Mosh, running Browsh should be as straightforward as operating it on a local command prompt.

This integration provides users with the ability to utilize Browsh's capabilities over Mosh, optimizing their remote terminal browsing experience, especially in challenging network conditions or during IP changes without disruptions in connectivity.

Mosh is better than SSH (2024)

FAQs

Mosh is better than SSH? ›

SSH waits for the server's reply before showing you your own typing. That can make for a lousy user interface. Mosh is different: it gives an instant response to typing, deleting, and line editing. It does this adaptively and works even in full-screen programs like emacs and vim.

What is the difference between OpenSSH and Mosh? ›

Design. Mosh works at a different layer from SSH. Whereas SSH transmits a stream of bytes in each direction (from server to client or client to server) using TCP, Mosh runs a terminal emulator at the server to figure out what should be on the screen.

What is faster than SSH? ›

Speed: FTP is generally considered to be the fastest protocol for file transfer because it does not have the encryption overhead that SSH and SFTP have. However, the speed of file transfer can also depend on other factors, such as the network speed and the size of the files being transferred.

Is there anything better than SSH? ›

There are alternatives to SSH for remote access. Telnet is an old method that lacks security but still has some uses. Mosh makes SSH connections more reliable over wireless connections and VPN offers access to intranet resources remotely with less need for technical knowledge.

Why is Mosh better than SSH? ›

Mosh is a modern replacement for SSH that has much better support for slow and unstable networks such as those typically found over mobile networks. Its main advantage for Browsh is that it only sends screen diffs, therefore it only uses bandwidth when something on the screen changes.

Can I use mosh instead of SSH? ›

SSH waits for the server's reply before showing you your own typing. That can make for a lousy user interface. Mosh is different: it gives an instant response to typing, deleting, and line editing. It does this adaptively and works even in full-screen programs like emacs and vim.

Is mosh encrypted? ›

Mosh is an alternative interactive SSH terminal. It has support for roaming and local echo. It also aims to improve responsiveness on intermittent, and high latency connections. To achieve the aim, Mosh uses UDP on the transport layer with AES-128 OCB mode encryption for the session.

What replaces SSH? ›

Competitors and Alternatives to SSH
  • CyberArk.
  • HashiCorp.
  • BeyondTrust.
  • IBM.
  • One Identity.
  • Delinea.
  • Ekran System.
  • Novasys.

What is the best alternative to OpenSSH? ›

Other important factors to consider when researching alternatives to OpenSSH include security and files. The best overall OpenSSH alternative is Egnyte. Other similar apps like OpenSSH are Virtru, AWS Key Management Service (KMS), HashiCorp Vault, and Azure Key Vault.

Why is SSH preferred? ›

It provides strong authentication and secure communications over unsecure channels. It is intended as a replacement for rlogin, rsh, and rcp. Additionally, SSH provides secure X connections and secure forwarding of arbitrary TCP connections.

Why is SSH failing? ›

When the SSH connection fails, you won't be able to deploy secure encryption on your site and run more advanced tasks such as remote commands. Usually, this error is caused by a wrong SSH port, incorrect credentials, and a disabled SSH service.

What is a disadvantage to using SSH? ›

SSH requires some software and settings to use, and it may not be compatible with some older or simpler devices. SSH also requires some knowledge and skills to use properly, such as generating and managing keys, choosing encryption algorithms, or troubleshooting errors.

Why not use SSH? ›

Key Theft: One of the primary risks associated with SSH keys is key theft. If an attacker gains access to an SSH key, they can use it to authenticate themselves and gain access to the systems and data that the key is authorized to access.

Does Mosh use UDP? ›

Since Mosh uses UDP, you'll need to open UDP ports 60000 through 61000 for the SSP packets.

Does Mosh use SSH config? ›

Mosh supports . ssh/config

It's a clever bit of software that keeps your SSH sessions running, even if your client goes offline or changes IP address.

Is SSH still relevant? ›

As of now, SSH (Secure Shell) is not being deprecated in favor of newer protocols for secure remote access and management. SSH continues to be a widely used and essential tool for securely accessing and managing remote systems.

Is there a difference between OpenSSH and SSH? ›

OpenSSH is the open-source version of the Secure Shell (SSH) tools used by administrators of Linux and other non-Windows for cross-platform management of remote systems.

What is the difference between OpenSSH and PuTTY key format? ›

The advantages of the PuTTY key format are: Public half of key is stored in plaintext. OpenSSH's private key format encrypts the entire key file, so that the client has to ask you for your passphrase before it can do anything with the key at all.

What is the purpose of OpenSSH? ›

SSH (Secure Shell) is a tool for secure system administration, file transfers, and other communication across the Internet or other untrusted network. It encrypts identities, passwords, and transmitted data so that they cannot be eavesdropped and stolen.

What are the three types of SSH? ›

SSH layers

SSH is made up of three layers: transport, user authentication, and connection layers. The transport layer handles the encryption and decryption of the data exchanged. The transport layer also authenticates the server and establishes confidentiality and integrity.

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