Need help?

Our experts have had an average response time of 11.7 minutes in August 2021 to fix urgent issues.

We will keep your servers stable, secure, and fast at all times for one fixed price.

SSH Connection Freezes – How to keep the connection alive?

by | Oct 8, 2021

SSH Connection Freezes after being inactive for few minutes? We can help you.

Here, at Bobcares, we assist several of our customers with errors as part of our Server Management Services.

In this article, let us see how our techs resolve this issue.

 

SSH Connection Freezes

Most often the ssh terminal freezes after being inactive for few minutes.

We can try to change the /etc/ssh/sshd_config to the following:

TCPKeepAlive yes
ClientAliveInterval 30
ClientAliveCountMax 99999

However, the restart of the ssh daemon service will not work.

Moving ahead, let us see how our Support Techs fix this issue for our customers.

First and foremost, we make these configuration changes on the client:

/etc/ssh/ssh_config
Host *
ServerAliveInterval 100

Here, the ServerAliveInterval means the client will send a null packet to the server every 100 seconds to keep the connection alive.

A NULL packet is sent by the server to the client. Similarly, the client sends the same packet to the server.

Then we configure the sshd part on the server:

/etc/ssh/sshd_config

ClientAliveInterval 60
TCPKeepAlive yes
ClientAliveCountMax 10000

In this case, clientAliveInterval indicates, the server will wait 60 seconds before sending a null packet to the client to keep the connection alive.

We have TCPKeepAlive to ensure that certain firewalls don’t drop idle connections.

ClientAliveCountMax Server will send alive messages to the client even if it does not receive any message back from the client.

Finally, we restart the ssh server:

service ssh restart or service sshd restart

This depends on the system we are on.

[Stuck in between? We are here for you 24*7]

 

Conclusion

In short, we saw how our Support Techs fix the SSH connection error.

PREVENT YOUR SERVER FROM CRASHING!

Never again lose customers to poor server speed! Let us help you.

Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.

GET STARTED

0 Comments

Submit a Comment

Your email address will not be published. Required fields are marked *

Privacy Preference Center

Necessary

Necessary cookies help make a website usable by enabling basic functions like page navigation and access to secure areas of the website. The website cannot function properly without these cookies.

PHPSESSID - Preserves user session state across page requests.

gdpr[consent_types] - Used to store user consents.

gdpr[allowed_cookies] - Used to store user allowed cookies.

PHPSESSID, gdpr[consent_types], gdpr[allowed_cookies]
PHPSESSID
WHMCSpKDlPzh2chML

Statistics

Statistic cookies help website owners to understand how visitors interact with websites by collecting and reporting information anonymously.

_ga - Preserves user session state across page requests.

_gat - Used by Google Analytics to throttle request rate

_gid - Registers a unique ID that is used to generate statistical data on how you use the website.

smartlookCookie - Used to collect user device and location information of the site visitors to improve the websites User Experience.

_ga, _gat, _gid
_ga, _gat, _gid
smartlookCookie

Marketing

Marketing cookies are used to track visitors across websites. The intention is to display ads that are relevant and engaging for the individual user and thereby more valuable for publishers and third party advertisers.

IDE - Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.

test_cookie - Used to check if the user's browser supports cookies.

1P_JAR - Google cookie. These cookies are used to collect website statistics and track conversion rates.

NID - Registers a unique ID that identifies a returning user's device. The ID is used for serving ads that are most relevant to the user.

DV - Google ad personalisation

IDE, test_cookie, 1P_JAR, NID, DV, NID
IDE, test_cookie
1P_JAR, NID, DV
NID
hblid

Security

These are essential site cookies, used by the google reCAPTCHA. These cookies use an unique identifier to verify if a visitor is human or a bot.

SID, APISID, HSID, NID, PREF
SID, APISID, HSID, NID, PREF