帮我看一下安装vsftp时候的错误

zhangyan8864

[root@localhost soft]# rpm -ivh vsftpd-2.0.3-1.i386.rpm
warning: vsftpd-2.0.3-1.i386.rpm: V3 DSA signature: NOKEY, key ID 30c9ecf8
error: Failed dependencies:
        libc.so.6(GLIBC_2.3.4) is needed by vsftpd-2.0.3-1
        libcrypto.so.5 is needed by vsftpd-2.0.3-1
        libssl.so.5 is needed by vsftpd-2.0.3-1


这是怎么回事？谢谢