Error: "stderr: ssh_exchange_identification: read: Connection reset by peer" during connection

[Marrx1]

Hi everyone! no so long ago faced issue with connection to bitbacket .

For some reason I started  getting  errors during connection to repo : 

stderr: ssh_exchange_identification: read: Connection reset by peer

These issues appear randomly in my  jobs on jenkins, firstly I got error using login and password instead ssh but  looking for a solution changed credential to ssh but it doesn't help .  My SSH key works  because 50% of time it connects successfully but other 50% failed . Could somebody  please  help me  fix this annoying issue?

here the log from jenkins 

Started by user dev
Building in workspace /var/lib/jenkins/workspace/**********
using credential ********-*****-*****-****-***********
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url git@bitbucket.org:******/******.git # timeout=10
Fetching upstream changes from git@bitbucket.org:******/********.git
 > git --version # timeout=10
using GIT_SSH to set credentials 
 > git fetch --tags --progress git@bitbucket.org:******/******.git +refs/heads/*:refs/remotes/origin/*
ERROR: Error fetching remote repo 'origin'
hudson.plugins.git.GitException: Failed to fetch from git@bitbucket.org:Tailorbet/api-tests-git.git
	at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:894)
	at hudson.plugins.git.GitSCM.retrieveChanges(GitSCM.java:1161)
	at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1192)
	at hudson.scm.SCM.checkout(SCM.java:504)
	at hudson.model.AbstractProject.checkout(AbstractProject.java:1208)
	at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:574)
	at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:499)
	at hudson.model.Run.execute(Run.java:1816)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
	at hudson.model.ResourceController.execute(ResourceController.java:97)
	at hudson.model.Executor.run(Executor.java:429)
Caused by: hudson.plugins.git.GitException: Command "git fetch --tags --progress git@bitbucket.org:*******/*********.git +refs/heads/*:refs/remotes/origin/*" returned status code 128:
stdout: 
stderr: ssh_exchange_identification: read: Connection reset by peer
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:2042)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:1761)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.access$400(CliGitAPIImpl.java:72)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$1.execute(CliGitAPIImpl.java:442)
	at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:892)
	... 11 more
ERROR: Error fetching remote repo 'origin'

[Marrx1 · Accepted solution]

Currently resolved, we didn't have part of IPs in our whitelists 

here the link to check actual Bitbacket IPs  

https://support.atlassian.com/bitbucket-cloud/docs/what-are-the-bitbucket-cloud-ip-addresses-i-should-use-to-configure-my-corporate-firewall/