Twin directories of redhat-updates:

[DIR]  ftp://ftp.cs.wisc.edu/pub/mirrors/linux/redhat-updates/
[DIR]  ftp://ftp.lf.net/pub/unix/systems/Linux/redhat-updates/
[DIR]  ftp://ftp.jyu.fi/apt-rpm/redhat-updates/
[DIR]  ftp://ftp.u-net.com/pub/unix/linux/redhat-updates/
[DIR]  ftp://ftp.uvigo.es/redhat-updates/
[DIR]  ftp://ftp.uvigo.es/mirror/redhat-updates/