مشکل در نصب IBSng

[reihani]

سلام
من IBSng رو به طور کامل نصب کردم اما وقتی به این قسمت

install pptpd
rpm -ivh http://acelnmp.googlecode.com/files/...5.1.x86_64.rpm

میرسم Error میده
کسی میتونه کمکم کنه؟

اینم Error که میده

Retrieving http://acelnmp.googlecode.com/files/...5.1.x86_64.rpm
warning: /var/tmp/rpm-xfer.bcpblB: Header V3 DSA signature: NOKEY, key ID 862acc42
error: Failed dependencies:
libc.so.6()(64bit) is needed by pptpd-1.3.4-1.rhel5.1.x86_64
libc.so.6(GLIBC_2.2.5)(64bit) is needed by pptpd-1.3.4-1.rhel5.1.x86_64
libc.so.6(GLIBC_2.3.4)(64bit) is needed by pptpd-1.3.4-1.rhel5.1.x86_64
libc.so.6(GLIBC_2.4)(64bit) is needed by pptpd-1.3.4-1.rhel5.1.x86_64
libutil.so.1()(64bit) is needed by pptpd-1.3.4-1.rhel5.1.x86_64
libutil.so.1(GLIBC_2.2.5)(64bit) is needed by pptpd-1.3.4-1.rhel5.1.x86_64
libwrap.so.0()(64bit) is needed by pptpd-1.3.4-1.rhel5.1.x86_64

لطفا هرکی میتونه راهنمایی کنه
ممنون