엠브리오의 일상

https://forums.gentoo.org/viewtopic-t-714345-start-0.html

The post from there 

To make it all work right, you need to twiddle the following configuration settings: 

Terminal → Keyboard: 

Change the sequences sent by: The Functions keys and Keypad: 
Select Linux. 

Window → Appearance: 

Font settings: 
Pick a font that contains the Unicode line drawing characters, such as Andale Mono or Lucida Console. (Unfortunately Vista’s gorgeous new Consolas font does not have those.) 

Window → Translation: 

Character set translation on received data: 
Select UTF-8. 
Adjust how PuTTY handles line drawing characters: 
Select Use Unicode line drawing code points. 

Connection → Data: 

Terminal details: Terminal-type string: 
Enter “linux”. 

Now line drawing characters should show up as they are supposed to.