CVE-2022-22167 Traffic classification vulnerability in Juniper Networks Junos OS on SRX Series Services Gateways may allow attackers to access unauthorized networks or resources if 'no-syn-check' is enabled.

CVE-2022-22167 Traffic classification vulnerability in Juniper Networks Junos OS on SRX Series Services Gateways may allow attackers to access unauthorized networks or resources if 'no-syn-check' is enabled.

19.4R4-S4; and 20.1-S1. This issue has been addressed in SRX Series: Junos OS version 17.4R1, 17.4R2, 17.4R3, 17.5 versions prior to 17.5R1; 18.2 versions prior to 18.2R1-S4; 18.3 versions prior to 18.3R1-S5; 18.4 versions prior to 18.4R1-S2; 19.1 versions prior to 19.1R1-S2; 19.2 versions prior to 19.2R1-S3; 19.3 versions prior to 19.3R1-S3; 19.4 versions prior to 19.4R1-S1; 20.1 versions prior to 20.1R1-S1; and 20.2 versions prior to 20.2R1-S1. This issue has been addressed in SRX Series: Junos OS version 17.4R1, 17.4R2, 17.4R3, 17.5 versions prior to 17.5R1; 18.2 versions prior to 18.2R1-S4; 18.3 versions prior to 18.3R1-S5; 18.4 versions prior to 18.4R1-S2; 19.1 versions prior to 19.1R1-S2

SRX Series: Junos OS and vSRX Platform Vulnerability

A vulnerability in Junos OS or vSRX Platform has been identified and can be exploited by malicious parties.
This issue has been addressed in SRX Series: Junos OS version 17.4R1, 17.4R2, 17.4R3, 17.5 versions prior to 17.5R1; 18.2 versions prior to 18.2R1-S4; 18.3 versions prior to 18.3R1-S5; 18.4 versions prior to 18.4R1-S2; 19.1 versions prior to 19.1R1-S2; 19.2 versions prior to 19.2R1-S3; 19.3 versions prior to 19.3R1-S3; 19.4 versions prior to 19.4R1-S1; 20.1 versions prior to 20.1R1-S1; and 20.2 versions prior to 20.2R1-S1

How to achieve forced reload of Junos OS on SRX Series devices after a reboot

When a device is rebooted (and thus, the Junos OS image reloaded) after a configuration change that requires a forced reload, the device does not automatically receive the new configuration. In this case, the administrator must manually trigger the reboot and force a reload by issuing an EXEC command.

How to Deploy SRX Series: Junos OS

Enterprise Services

How to Upgrade Juniper Networks SRX Series Software?

In order to upgrade the Juniper SRX Series software, please follow these steps:
1. Login to the Junos CLI and ascertain if you are already running the latest software version by issuing the show version command.
2. If you are not running the latest software version, then it is time to update your device with new software. Please follow these steps to update your Junos OS installation:
a) ssh into your device (user root and password password) and issue these commands:
install system commit; install syslog commit; install system commit-repository junos-connector-odbc; install syslog commit-repository junos-connector-odbc;
b) Once the process has completed, issue this command:
show boot progress;
c) You will see a message indicating that all phases of the upgrade have been completed successfully.

What is the purpose of a firewall?

The purpose of a firewall is to protect the confidentiality, integrity and availability of the traffic passing through it by using network access control. Firewall software blocks incoming and outgoing connections unless they are explicitly allowed. If a firewall policy allows an inbound connection, the firewall may inspect its payload after it has arrived.

References

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