Transition Control Protocol (TCP) stream<\/a> was abruptly terminated by the remote machine, according to the “ssh exchange identification: read: Connection reset by peer” fault. Most of the time, a brief reboot of a remote server can resolve a fleeting outage or connectivity problem.<\/p>\nYou can avoid similar problems in your system in the future by understanding how to solve this one and identifying the root cause. The following are the most typical reasons for the error “ssh exchange identification: read: How to Fix Connection Reset by Peer Error?<\/strong><\/span>“:<\/p>\n\n- The Host-Based Access Control Lists are preventing the connection.<\/li>\n
- By upgrading firewall rules, intrusion prevention software is blocking your IP (Fail2ban, Deny Hosts, etc.).<\/li>\n
- changes to the configuration file for the SSH daemon.<\/li>\n<\/ol>\n
<\/span>Check the hosts. deny and hosts. allow File<\/strong><\/span><\/h2>\nThe hosts. deny and hosts. allow files to be TCP wrappers. As a security feature, these files are used to limit which IP address or hostname can establish a connection to the remote machine.<\/p>\n
<\/span>How to Edit hosts. deny File?<\/strong><\/span><\/h2>\nAccess your remote server and open the hosts. deny the file using your preferred text editor. If you are using nano on a Debian-based system, enter the following command:<\/u><\/p>\n\nsudo nano \/etc\/hosts.deny<\/code><\/li>\n<\/ul>\nComments are lines that are empty or that begin with the symbol “#.” See if the file contains your local IP or host name. If it’s there, get rid of it or comment it out because failing to do so prohibits you from creating a remote connection.<\/p>\n
Save the file after making the necessary adjustments, then close it. Try using SSH to reconnect.<\/p>\n
<\/span>How to Edit hosts. allow File?<\/strong><\/span><\/h2>\nEdit the hosts as an additional measure of safety.<\/p>\n
permit file rules for access on the hosts. allowing is used first. They are given precedence over host-specific rules. file denied Enter the next command to connect to the hosts. permit file:<\/u><\/p>\n\nsudo nano \/etc\/hosts.allow<\/code><\/li>\n<\/ul>\nAdding hostnames and IP addresses to the file creates exceptions to the hosts. deny settings. For instance, the etc\/hosts might have a stringent security policy. deny file, would prevent all hosts from accessing:<\/u><\/p>\n\nSTSH: ALL<\/code><\/li>\nTHEM ALL:<\/code><\/li>\n<\/ul>\nYou can then edit the etc\/hosts.allow file to add a single IP address, an IP range, or a hostname. Only the IP listed below would be permitted to make an SSH connection with your remote server by adding the following line:<\/u><\/p>\n\n10.0.5, LOCAL, sshd<\/code><\/li>\n<\/ul>\nHow to Fix Connection Reset by Peer Error?<\/em> Remember that a security levels this restrictive can limit your ability to administer your distant servers.<\/p>\n<\/span>Check if fail2ban Banned Your IP Address<\/strong><\/span><\/h2>\nAn intrusion protection system may have blocked your IP if you have repeatedly attempted to connect. In order to defend you from brute force attacks, a service called Fail2ban may mistakenly perceive your efforts at login as an attack.<\/p>\n