How To Install nss on CentOS 8

nss is Network Security Services Network Security Services

Introduction

In this tutorial we learn how to install nss on CentOS 8.

What is nss

Network Security Services (NSS) is a set of libraries designed to support cross-platform development of security-enabled client and server applications. Applications built with NSS can support SSL v2 and v3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS #12, S/MIME, X.509 v3 certificates, and other security standards. nss 3.53.1 17.el8_3 x86_64 723 k nss-3.53.1-17.el8_3.src.rpm appstream Network Security Services http MPLv2.0 Network Security Services (NSS) is a set of libraries designed to support cross-platform development of security-enabled client and server applications. Applications built with NSS can support SSL v2 and v3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS #12, S/MIME, X.509 v3 certificates, and other security standards.

We can use yum or dnf to install nss on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install nss.

Install nss on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install nss using dnf by running the following command:

sudo dnf -y install nss

Install nss on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install nss using yum by running the following command:

sudo yum -y install nss

How To Uninstall nss on CentOS 8

To uninstall only the nss package we can use the following command:

sudo dnf remove nss

nss Package Contents on CentOS 8

/etc/crypto-policies/local.d/nss-p11-kit.config
/etc/pki/nssdb
/etc/pki/nssdb/cert8.db
/etc/pki/nssdb/cert9.db
/etc/pki/nssdb/key3.db
/etc/pki/nssdb/key4.db
/etc/pki/nssdb/pkcs11.txt
/etc/pki/nssdb/secmod.db
/usr/lib/.build-id
/usr/lib/.build-id/13
/usr/lib/.build-id/13/685b7c8f1e9006efae917004a2d6b8ac611c8b
/usr/lib/.build-id/2e
/usr/lib/.build-id/2e/315fb9d32805e11604313eed82f799d516a9c2
/usr/lib/.build-id/97
/usr/lib/.build-id/97/0392f832782962fcec0cb732016dcf71289c44
/usr/lib64/libnss3.so
/usr/lib64/libsmime3.so
/usr/lib64/libssl3.so
/usr/share/licenses/nss
/usr/share/licenses/nss/COPYING
/usr/share/man/man5/cert8.db.5.gz
/usr/share/man/man5/cert9.db.5.gz
/usr/share/man/man5/key3.db.5.gz
/usr/share/man/man5/key4.db.5.gz
/usr/share/man/man5/pkcs11.txt.5.gz
/usr/share/man/man5/secmod.db.5.gz
/etc/crypto-policies/local.d/nss-p11-kit.config
/etc/pki/nssdb
/etc/pki/nssdb/cert8.db
/etc/pki/nssdb/cert9.db
/etc/pki/nssdb/key3.db
/etc/pki/nssdb/key4.db
/etc/pki/nssdb/pkcs11.txt
/etc/pki/nssdb/secmod.db
/usr/lib/.build-id
/usr/lib/.build-id/40
/usr/lib/.build-id/40/034a4c934bb71e101e0720777c4f9851847234
/usr/lib/.build-id/c7
/usr/lib/.build-id/c7/57bcdb75d781678bf1454a13dd542a3e2b7362
/usr/lib/.build-id/f4
/usr/lib/.build-id/f4/e85d387c2d01cc62ddd18d89de9595f3222334
/usr/lib/libnss3.so
/usr/lib/libsmime3.so
/usr/lib/libssl3.so
/usr/share/licenses/nss
/usr/share/licenses/nss/COPYING
/usr/share/man/man5/cert8.db.5.gz
/usr/share/man/man5/cert9.db.5.gz
/usr/share/man/man5/key3.db.5.gz
/usr/share/man/man5/key4.db.5.gz
/usr/share/man/man5/pkcs11.txt.5.gz
/usr/share/man/man5/secmod.db.5.gz

References

Summary

In this tutorial we learn how to install nss on CentOS 8 using yum and dnf.