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39 lines
1.6 KiB
Markdown
39 lines
1.6 KiB
Markdown
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---
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layout: post
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comments: true
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title: "Don't use DCC & How to disable it"
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category: [english]
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tags: [irc, english]
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---
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DCC was way to send files and chat without having IRC server in the
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between. It's not very common nowadays and what is done nowadays is
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uploading images etc. to social media services or web servers or using
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other file transfer protocols.
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Here are some reasons to not use it:
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* There is no proper standard or if there is, no one follows it, all
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clients speak their own dialects and may be unable to communicate with
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other clients. Not all clients even implement the same features.
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* NAT and firewalls break it
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* As DCC requires port on sending/hosting side, it must be opened in
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firewall and if there is NAT which there is in most of situations
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nowadays, the port must be forwarded. Most of average users have
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no idea how to do the latter if even the first.
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* The only place where most of people see it is spam. The only thing lately
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where people have seen is two attacks which @grawity has documented
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[here](https://nullroute.eu.org/~grawity/dcc.html)
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## Disabling DCC
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This depends on your client and I am only able to give instructions for
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three:
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* WeeChat: "`/plugin unload xfer`" and "`/set weechat.plugin.autoload *,!xfer`"
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* The option in second command can be also be used to not automatically
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load other plugins, I personally use `/set weechat.plugin.autoload alias,exec,irc,perl,python,script,trigger,logger`.
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The `*,!xfer` simply means load everything else than xfer.
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* HexChat: "`/ignore *!*@* DCC`"
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* ZNC & clients behind it: "`/znc *controlpanel addctcp $me DCC`"
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