Áú»¢¶Ä²©

2 §ª§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ß§Ú§Ö pre-shared §Ü§Ý§ð§é§Ö§Û

§°§Ò§Ù§à§â

§¬§Ñ§Ø§Õ§í§Û pre-shared key (PSK) §Ó Áú»¢¶Ä²© §ñ§Ó§Ý§ñ§Ö§ä§ã§ñ §á§Ñ§â§à§Û:

• §ß§Ö§ã§Ö§Ü§â§Ö§ä§ß§à§Û §ã§ä§â§à§Ü§à§Û §Ú§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§è§Ú§Ú PSK,
• §ã§Ö§Ü§â§Ö§ä§ß§í§Þ §ã§ä§â§à§Ü§à§Ó§í§Þ §Ù§ß§Ñ§é§Ö§ß§Ú§Ö§Þ PSK.

§³§ä§â§à§Ü§à§Û §Ú§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§è§Ú§Ú PSK §ñ§Ó§Ý§ñ§Ö§ä§ã§ñ §ß§Ö §á§å§ã§ä§Ñ§ñ UTF-8 §ã§ä§â§à§Ü§Ñ. §¯§Ñ§á§â§Ú§Þ§Ö§â, "PSK ID 001 Áú»¢¶Ä²© agentd". §¿§ä§à §å§ß§Ú§Ü§Ñ§Ý§î§ß§à§Ö §Ú§Þ§ñ, §á§à §Ü§à§ä§à§â§à§Þ§å §ï§ä§à§ä §Ü§à§ß§Ü§â§Ö§ä§ß§í§Û PSK §å§á§à§Þ§Ú§ß§Ñ§Ö§ä§ã§ñ Áú»¢¶Ä²© §Ü§à§Þ§á§à§ß§Ö§ß§ä§Ñ§Þ§Ú. §¯§Ö §á§à§Þ§Ö§ë§Ñ§Û§ä§Ö §é§å§Ó§ã§ä§Ó§Ú§ä§Ö§Ý§î§ß§å§ð §Ú§ß§æ§à§â§Þ§Ñ§è§Ú§ð §Ó §ã§ä§â§à§Ü§å §Ú§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§è§Ú§Ú PSK - §à§ß§Ñ §á§Ö§â§Ö§Õ§Ñ§Ö§ä§ã§ñ §ß§Ö§Ù§Ñ§ê§Ú§æ§â§à§Ó§Ñ§ß§ß§à§Û §á§à §ã§Ö§ä§Ú.

§©§ß§Ñ§é§Ö§ß§Ú§Ö§Þ PSK §ñ§Ó§Ý§ñ§Ö§ä§ã§ñ §ã§Ý§à§Ø§ß§à §å§Ô§Ñ§Õ§í§Ó§Ñ§Ö§Þ§à§Û §ã§ä§â§à§Ü§à§Û §Ú§Ù §ê§Ö§ã§ä§ß§Ñ§Õ§è§Ñ§ä§Ö§â§Ú§é§ß§í§ç §è§Ú§æ§â, §ß§Ñ§á§â§Ú§Þ§Ö§â, "e560cb0d918d26d31b4f642181f5f570ad89a390931102e5391d08327ba434e9".

§°§Ô§â§Ñ§ß§Ú§é§Ö§ß§Ú§ñ §â§Ñ§Ù§Þ§Ö§â§Ñ

§£ Áú»¢¶Ä²© §Ú§Þ§Ö§Ö§ä§ã§ñ §à§Ô§â§Ñ§ß§Ú§é§Ö§ß§Ú§Ö §ß§Ñ §â§Ñ§Ù§Þ§Ö§â§í §Ú§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§ä§à§â§Ñ §Ú §Ù§ß§Ñ§é§Ö§ß§Ú§ñ PSK, §Ó §ß§Ö§Ü§à§ä§à§â§í§ç §ã§Ý§å§é§Ñ§ñ§ç §Ü§â§Ú§á§ä§à §Ò§Ú§Ò§Ý§Ú§à§ä§Ö§Ü§Ú §Þ§à§Ô§å§ä §Ú§Þ§Ö§ä§î §Þ§Ö§ß§î§ê§Ö§Ö §à§Ô§â§Ñ§ß§Ú§é§Ö§ß§Ú§Ö:

§±§Ö§â§Ö§Õ §ä§Ö§Þ §Ü§Ñ§Ü Áú»¢¶Ä²© §ã§Ö§â§Ó§Ö§â §á§à§Õ§Ü§Ý§ð§é§Ú§ä§ã§ñ §Ü §Ñ§Ô§Ö§ß§ä§å §ã §Ú§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ß§Ú§Ö§Þ PSK, §ã§Ö§â§Ó§Ö§â §á§à§Ú§ë§Ö§ä §Ú§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§ä§à§â PSK §Ú §Ù§ß§Ñ§é§Ö§ß§Ú§Ö PSK §ï§ä§à§Ô§à §Ñ§Ô§Ö§ß§ä§Ñ §Ó §Ò§Ñ§Ù§Ö §Õ§Ñ§ß§ß§í§ç (§Ó §Õ§Ö§Û§ã§ä§Ó§Ú§ä§Ö§Ý§î§ß§à§ã§ä§Ú §Ó §Ü§ï§ê§Ö §Ü§à§ß§æ§Ú§Ô§å§â§Ñ§è§Ú§Ú). §±§à§ã§Ý§Ö §á§â§Ú§Ö§Þ§Ñ §á§à§Õ§Ü§Ý§ð§é§Ö§ß§Ú§ñ §Ñ§Ô§Ö§ß§ä §Ú§ã§á§à§Ý§î§Ù§å§Ö§ä §Ú§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§ä§à§â PSK §Ú §Ù§ß§Ñ§é§Ö§ß§Ú§Ö PSK §Ú§Ù §ã§Ó§à§Ö§Ô§à §æ§Ñ§Û§Ý§Ñ §Ü§à§ß§æ§Ú§Ô§å§â§Ñ§è§Ú§Ú. §¦§ã§Ý§Ú §à§Ò§Ö §á§Ñ§â§í §Ú§Þ§Ö§ð§ä §à§Õ§Ú§ß§Ñ§Ü§à§Ó§í§Ö §Ú§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§ä§à§â§í PSK §Ú §Ù§ß§Ñ§é§Ö§ß§Ú§ñ PSK, §ã§à§Ö§Õ§Ú§ß§Ö§ß§Ú§Ö §Þ§à§Ø§Ö§ä §Ò§í§ä§î §å§ã§á§Ö§ê§ß§í§Þ.

§¤§Ö§ß§Ö§â§Ú§â§à§Ó§Ñ§ß§Ú§Ö PSK

§¯§Ñ§á§â§Ú§Þ§Ö§â, §Þ§à§Ø§ß§à §ã§Ô§Ö§ß§Ö§â§Ú§â§à§Ó§Ñ§ä§î 256-§Ò§Ú§ä§ß§í§Û (32 §Ò§Ñ§Û§ä) PSK §á§â§Ú §á§à§Þ§à§ë§Ú §ã§Ý§Ö§Õ§å§ð§ë§Ú§ç §Ü§à§Þ§Ñ§ß§Õ:

• §ã OpenSSL:

  $ openssl rand -hex 32
         af8ced32dfe8714e548694e2d29e1a14ba6fa13f216cb35c19d0feb1084b0429

• §ã GnuTLS:

  $ psktool -u psk_identity -p database.psk -s 32
         Generating a random key for user 'psk_identity'
         Key stored to database.psk
         
         $ cat database.psk 
         psk_identity:9b8eafedfaae00cece62e85d5f4792c7d9c9bcc851b23216a1d300311cc4f7cb

§°§Ò§â§Ñ§ä§Ú§ä§Ö §Ó§ß§Ú§Þ§Ñ§ß§Ú§Ö, §é§ä§à §Ü§à§Þ§Ñ§ß§Õ§Ñ "psktool" §Ó§í§ê§Ö §Ô§Ö§ß§Ö§â§Ú§â§å§Ö§ä §æ§Ñ§Û§Ý §Ò§Ñ§Ù§í §Õ§Ñ§ß§ß§í§ç §ã §Ú§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§ä§à§â§à§Þ PSK §Ú §ã§à §ã§Ó§ñ§Ù§Ñ§ß§ß§í§Þ §ã §ß§Ú§Þ PSK. Áú»¢¶Ä²© §à§Ø§Ú§Õ§Ñ§Ö§ä §á§â§à§ã§ä§à PSK §Ó §æ§Ñ§Û§Ý§Ö §ã PSK, §ä§à §Ö§ã§ä§î §ß§Ö§à§Ò§ç§à§Õ§Ú§Þ§à §å§Õ§Ñ§Ý§Ú§ä§î §ã§ä§â§à§Ü§å §Ú§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§è§Ú§Ú §Ú §Õ§Ó§à§Ö§ä§à§é§Ú§Ö (':').

§¯§Ñ§ã§ä§â§à§Û§Ü§Ñ PSK §Õ§Ý§ñ §ã§à§Ö§Õ§Ú§ß§Ö§ß§Ú§ñ §ã§Ö§â§Ó§Ö§â-§Ñ§Ô§Ö§ß§ä (§á§â§à§ã§ä§à§Û §á§â§Ú§Þ§Ö§â)

§¯§Ñ §ç§à§ã§ä§Ö §Ñ§Ô§Ö§ß§ä§Ñ §Ù§Ñ§á§Ú§ê§Ú§ä§Ö §Ù§ß§Ñ§é§Ö§ß§Ú§Ö PSK §Ó §æ§Ñ§Û§Ý, §ß§Ñ§á§â§Ú§Þ§Ö§â, /home/zabbix/zabbix_agentd.psk. §¿§ä§à§ä §æ§Ñ§Û§Ý §Õ§à§Ý§Ø§Ö§ß §ã§à§Õ§Ö§â§Ø§Ñ§ä§î PSK §Ó §á§Ö§â§Ó§à§Û §ã§ä§â§à§Ü§Ö §ä§Ö§Ü§ã§ä§Ñ, §ß§Ñ§á§â§Ú§Þ§Ö§â:

1f87b595725ac58dd977beef14b97461a7c1045b9a1c963065002c5473194952

§©§Ñ§Õ§Ñ§Û§ä§Ö §á§â§Ñ§Ó§Ñ §Õ§à§ã§ä§å§á§Ñ §Ü PSK §æ§Ñ§Û§Ý§å - §à§ß §Õ§à§Ý§Ø§Ö§ß §Ò§í§ä§î §Õ§à§ã§ä§å§á§Ö§ß §Õ§Ý§ñ §é§ä§Ö§ß§Ú§ñ §ä§à§Ý§î§Ü§à §á§à§Ý§î§Ù§à§Ó§Ñ§ä§Ö§Ý§ð Áú»¢¶Ä²©.

§ª§Ù§Þ§Ö§ß§Ú§ä§Ö §á§Ñ§â§Ñ§Þ§Ö§ä§â§í TLS §Ó §æ§Ñ§Û§Ý§Ö §Ü§à§ß§æ§Ú§Ô§å§â§Ñ§è§Ú§Ú zabbix_agentd.conf, §ß§Ñ§á§â§Ú§Þ§Ö§â, §Ù§Ñ§Õ§Ñ§Û§ä§Ö:

TLSConnect=psk
       TLSAccept=psk
       TLSPSKFile=/home/zabbix/zabbix_agentd.psk
       TLSPSKIdentity=PSK 001

§¡§Ô§Ö§ß§ä §Ò§å§Õ§Ö§ä §á§à§Õ§Ü§Ý§ð§é§Ñ§ä§î§ã§ñ §Ü §ã§Ö§â§Ó§Ö§â§å (§Ñ§Ü§ä§Ú§Ó§ß§í§Ö §á§â§à§Ó§Ö§â§Ü§Ú) §Ú §á§â§Ú§ß§Ú§Þ§Ñ§ä§î §à§ä §ã§Ö§â§Ó§Ö§â§Ñ §Ú zabbix_get §ä§à§Ý§î§Ü§à §ä§Ö §ã§à§Ö§Õ§Ú§ß§Ö§ß§Ú§ñ, §Ü§à§ä§à§â§í§Ö §Ú§ã§á§à§Ý§î§Ù§å§ð§ä PSK. §ª§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§ä§à§â§à§Þ PSK §Ò§å§Õ§Ö§ä "PSK 001".

§±§Ö§â§Ö§Ù§Ñ§á§å§ã§ä§Ú§ä§Ö §Ñ§Ô§Ö§ß§ä§Ñ. §´§Ö§á§Ö§â§î §Ó§í §Þ§à§Ø§Ö§ä§Ö §á§â§à§ä§Ö§ã§ä§Ú§â§à§Ó§Ñ§ä§î §á§à§Õ§Ü§Ý§ð§é§Ö§ß§Ú§Ö, §Ú§ã§á§à§Ý§î§Ù§å§ñ zabbix_get, §ß§Ñ§á§â§Ú§Þ§Ö§â:

$ zabbix_get -s 127.0.0.1 -k "system.cpu.load[all,avg1]" --tls-connect=psk \
                   --tls-psk-identity="PSK 001" --tls-psk-file=/home/zabbix/zabbix_agentd.psk

(§¹§ä§à§Ò§í §ã§Ó§Ö§ã§ä§Ú §Ü §Þ§Ú§ß§Ú§Þ§å§Þ§å §Ó§â§Ö§Þ§ñ §á§â§à§ã§ä§à§ñ, §ã§Þ§à§ä§â§Ú§ä§Ö §Ü§Ñ§Ü §Ú§Ù§Þ§Ö§ß§Ú§ä§î §ä§Ú§á §á§à§Õ§Ü§Ý§ð§é§Ö§ß§Ú§ñ §Ó §µ§á§â§Ñ§Ó§Ý§Ö§ß§Ú§Ú §Ù§Ñ§ê§Ú§æ§â§à§Ó§Ñ§ß§ß§í§Þ§Ú §ã§à§Ö§Õ§Ú§ß§Ö§ß§Ú§ñ§Þ§Ú).

§¯§Ñ§ã§ä§â§à§Û§ä§Ö PSK §ê§Ú§æ§â§à§Ó§Ñ§ß§Ú§Ö §ï§ä§à§Þ§å §Ñ§Ô§Ö§ß§ä§å §Ó §Ó§Ö§Ò-§Ú§ß§ä§Ö§â§æ§Ö§Û§ã§Ö Áú»¢¶Ä²©.

• §±§Ö§â§Ö§Û§Õ§Ú§ä§Ö §Ó: §¯§Ñ§ã§ä§â§à§Û§Ü§Ñ ¡ú §µ§Ù§Ý§í §ã§Ö§ä§Ú
• §£§í§Ò§Ö§â§Ú§ä§Ö §å§Ù§Ö§Ý §ã§Ö§ä§Ú §Ú §ß§Ñ§Ø§Þ§Ú§ä§Ö §ß§Ñ §Ó§Ü§Ý§Ñ§Õ§Ü§å §º§Ú§æ§â§à§Ó§Ñ§ß§Ú§Ö

§±§â§Ú§Þ§Ö§â:

§£§ã§Ö §à§Ò§ñ§Ù§Ñ§ä§Ö§Ý§î§ß§í§Ö §á§à§Ý§ñ §Ó§Ó§à§Õ§Ñ §à§ä§Þ§Ö§é§Ö§ß§í §Ü§â§Ñ§ã§ß§à§Û §Ù§Ó§×§Ù§Õ§à§é§Ü§à§Û.

§¬§à§Ô§Õ§Ñ §Ü§ï§ê §Ü§à§ß§æ§Ú§Ô§å§â§Ñ§è§Ú§Ú §ã§Ú§ß§ç§â§à§ß§Ú§Ù§Ú§â§å§Ö§ä§ã§ñ §ã §Ò§Ñ§Ù§à§Û §Õ§Ñ§ß§ß§í§ç, §ß§à§Ó§í§Ö §á§à§Õ§Ü§Ý§ð§é§Ö§ß§Ú§ñ §Ò§å§Õ§å§ä §Ú§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ä§î PSK. §±§â§à§Ó§Ö§â§î§ä§Ö §æ§Ñ§Û§Ý§í §Ø§å§â§ß§Ñ§Ý§à§Ó §ã§Ö§â§Ó§Ö§â§Ñ §Ú §Ñ§Ô§Ö§ß§ä§Ñ §ß§Ñ §á§â§Ö§Õ§Þ§Ö§ä §ã§à§à§Ò§ë§Ö§ß§Ú§Û §à§Ò §à§ê§Ú§Ò§Ü§Ñ§ç.

§¯§Ñ§ã§ä§â§à§Û§Ü§Ñ PSK §Õ§Ý§ñ §ã§à§Ö§Õ§Ú§ß§Ö§ß§Ú§ñ §ã§Ö§â§Ó§Ö§â - §Ñ§Ü§ä§Ú§Ó§ß§í§Û §á§â§à§Ü§ã§Ú (§á§â§à§ã§ä§à§Û §á§â§Ú§Þ§Ö§â)

§¯§Ñ §ç§à§ã§ä§Ö §á§â§à§Ü§ã§Ú §Ù§Ñ§á§Ú§ê§Ú§ä§Ö §Ù§ß§Ñ§é§Ö§ß§Ú§Ö PSK §Ó §æ§Ñ§Û§Ý, §ß§Ñ§á§â§Ú§Þ§Ö§â, /home/zabbix/zabbix_proxy.psk. §¿§ä§à§ä §æ§Ñ§Û§Ý §Õ§à§Ý§Ø§Ö§ß §ã§à§Õ§Ö§â§Ø§Ñ§ä§î PSK §Ó §á§Ö§â§Ó§à§Û §ã§ä§â§à§Ü§Ö §ä§Ö§Ü§ã§ä§Ñ, §ß§Ñ§á§â§Ú§Þ§Ö§â:

e560cb0d918d26d31b4f642181f5f570ad89a390931102e5391d08327ba434e9

§©§Ñ§Õ§Ñ§Û§ä§Ö §á§â§Ñ§Ó§Ñ §Õ§à§ã§ä§å§á§Ñ §Ü PSK §æ§Ñ§Û§Ý§å - §à§ß §Õ§à§Ý§Ø§Ö§ß §Ò§í§ä§î §Õ§à§ã§ä§å§á§Ö§ß §Õ§Ý§ñ §é§ä§Ö§ß§Ú§ñ §ä§à§Ý§î§Ü§à §á§à§Ý§î§Ù§à§Ó§Ñ§ä§Ö§Ý§ð Áú»¢¶Ä²©.

§ª§Ù§Þ§Ö§ß§Ú§ä§Ö §á§Ñ§â§Ñ§Þ§Ö§ä§â§í TLS §Ó §æ§Ñ§Û§Ý§Ö §Ü§à§ß§æ§Ú§Ô§å§â§Ñ§è§Ú§Ú zabbix_proxy.conf, §ß§Ñ§á§â§Ú§Þ§Ö§â, §Ù§Ñ§Õ§Ñ§Û§ä§Ö:

TLSConnect=psk
       TLSPSKFile=/home/zabbix/zabbix_proxy.psk
       TLSPSKIdentity=PSK 002

§¡§Ô§Ö§ß§ä §Ò§å§Õ§Ö§ä §á§à§Õ§Ü§Ý§ð§é§Ñ§ä§î§ã§ñ §Ü §ã§Ö§â§Ó§Ö§â§å, §Ú§ã§á§à§Ý§î§Ù§å§ñ PSK. §ª§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§ä§à§â§à§Þ PSK §Ò§å§Õ§Ö§ä "PSK 002".

(§¹§ä§à§Ò§í §ã§Ó§Ö§ã§ä§Ú §Ü §Þ§Ú§ß§Ú§Þ§å§Þ§å §Ó§â§Ö§Þ§ñ §á§â§à§ã§ä§à§ñ, §ã§Þ§à§ä§â§Ú§ä§Ö §Ü§Ñ§Ü §Ú§Ù§Þ§Ö§ß§Ú§ä§î §ä§Ú§á §á§à§Õ§Ü§Ý§ð§é§Ö§ß§Ú§ñ §Ó §µ§á§â§Ñ§Ó§Ý§Ö§ß§Ú§Ú §Ù§Ñ§ê§Ú§æ§â§à§Ó§Ñ§ß§ß§í§Þ§Ú §ã§à§Ö§Õ§Ú§ß§Ö§ß§Ú§ñ§Þ§Ú).

§¯§Ñ§ã§ä§â§à§Û§ä§Ö PSK §ï§ä§à§Þ§å §á§â§à§Ü§ã§Ú §Ó §Ó§Ö§Ò-§Ú§ß§ä§Ö§â§æ§Ö§Û§ã§Ö Áú»¢¶Ä²©. §±§Ö§â§Ö§Û§Õ§Ú§ä§Ö §ß§Ñ §¡§Õ§Þ§Ú§ß§Ú§ã§ä§â§Ú§â§à§Ó§Ñ§ß§Ú§Ö¡ú§±§â§à§Ü§ã§Ú, §Ó§í§Ò§Ö§â§Ú§ä§Ö §á§â§à§Ü§ã§Ú, §á§Ö§â§Ö§Û§Õ§Ú§ä§Ö §ß§Ñ §Ó§Ü§Ý§Ñ§Õ§Ü§å "§º§Ú§æ§â§à§Ó§Ñ§ß§Ú§Ö". §±§Ö§â§Ö§Ü§Ý§ð§é§Ú§ä§Ö "§³§à§Ö§Õ§Ú§ß§Ö§ß§Ú§ñ §ã §á§â§à§Ü§ã§Ú" §ß§Ñ PSK. §£§ã§ä§Ñ§Ó§î§ä§Ö §Ó §á§à§Ý§Ö "§ª§Õ§Ö§ß§ä§Ú§æ§Ú§Ü§Ñ§ä§à§â PSK" §Ù§ß§Ñ§é§Ö§ß§Ú§Ö "PSK 002" §Ú "e560cb0d918d26d31b4f642181f5f570ad89a390931102e5391d08327ba434e9" §Ó §á§à§Ý§Ö "PSK". §¯§Ñ§Ø§Þ§Ú§ä§Ö "§°§Ò§ß§à§Ó§Ú§ä§î".

§±§Ö§â§Ö§Ù§Ñ§á§å§ã§ä§Ú§ä§Ö §á§â§à§Ü§ã§Ú. §°§ß §ß§Ñ§é§ß§Ö§ä §Ú§ã§á§à§Ý§î§Ù§à§Ó§Ñ§ä§î §Ù§Ñ§ê§Ú§æ§â§à§Ó§Ñ§ß§ß§í§Ö §ã§à§Ö§Õ§Ú§ß§Ö§ß§Ú§ñ §Ü §ã§Ö§â§Ó§Ö§â§å §ß§Ñ §à§ã§ß§à§Ó§Ö PSK. §±§â§à§Ó§Ö§â§î§ä§Ö §æ§Ñ§Û§Ý§í §Ø§å§â§ß§Ñ§Ý§à§Ó §ã§Ö§â§Ó§Ö§â§Ñ §Ú §á§â§à§Ü§ã§Ú §ß§Ñ §á§â§Ö§Õ§Þ§Ö§ä §ã§à§à§Ò§ë§Ö§ß§Ú§Û §à§Ò §à§ê§Ú§Ò§Ü§Ñ§ç.

§£ §ã§Ý§å§é§Ñ§Ö §á§Ñ§ã§ã§Ú§Ó§ß§í§ç §á§â§à§Ü§ã§Ú §á§â§à§è§Ö§Õ§å§â§Ñ §à§é§Ö§ß§î §á§à§ç§à§Ø§Ñ. §²§Ñ§Ù§ß§Ú§è§Ñ §Ý§Ú§ê§î §Ó §ä§à§Þ, §é§ä§à §ß§Ö§à§Ò§ç§à§Õ§Ú§Þ§à §Ù§Ñ§Õ§Ñ§ä§î TLSAccept=psk §Ó §æ§Ñ§Û§Ý§Ö §Ü§à§ß§æ§Ú§Ô§å§â§Ñ§è§Ú§Ú §á§â§à§Ü§ã§Ú §Ú §á§Ö§â§Ö§Ü§Ý§ð§é§Ú§ä§î "§±§à§Õ§Ü§Ý§ð§é§Ö§ß§Ú§ñ §Ü §á§â§à§Ü§ã§Ú" §Ó Áú»¢¶Ä²© §Ó§Ö§Ò-§Ú§ß§ä§Ö§â§æ§Ö§Û§ã§Ö §ß§Ñ PSK.