# Yum.osc.edu blocking some Chinese IPs

**URL:** <https://discourse.openondemand.org/t/yum-osc-edu-blocking-some-chinese-ips/2248>\
**Category:** Announcements\
**Created:** [August 30, 2022, 5:57pm UTC](https://discourse.openondemand.org/t/yum-osc-edu-blocking-some-chinese-ips/2248 "2022-08-30T17:57:57Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jeff.ohrstrom](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/jeff.ohrstrom/32/136_2.png) [@jeff.ohrstrom](https://discourse.openondemand.org/u/jeff.ohrstrom)\
**Post date:** [August 30, 2022, 5:57pm UTC](https://discourse.openondemand.org/t/yum-osc-edu-blocking-some-chinese-ips/2248/1 "2022-08-30T17:57:57Z")

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`yum.osc.edu` - the site that hosts our install-able packages - recently came under a DDOS attack from some Chinese IPs. For this reason, we’ve started to block these malicious IPs with /24 and /16 CIDRs.

If your institution is being blocked by us and you’re now unable to download RPMs or .deb files, please reach out to us to remedy the issue through:

- opening a ticket here on discourse
- messaging a maintainer here on discourse
- emailing `info@openondemand.org`