Kif Uri Messaġġ ta' Twissija lil Utenti Mhux Awtorizzati SSH
Twissijiet tal-banners SSH huma kruċjali meta kumpaniji jew organizzazzjonijiet iridu juru messaġġ ta 'twissija strett biex jiskoraġġixxu utenti mhux awtorizzati milli jaċċessaw server Linux.
Dawn il-messaġġi ta' twissija tal-banner SSH jintwerew eżatt qabel il-pront tal-password SSH sabiex utenti mhux awtorizzati li jkunu waslu biex jiksbu aċċess ikunu mgħarrfa dwar il-konsegwenzi ta' dan. Tipikament, dawn it-twissijiet huma konsegwenzi legali li utenti mhux awtorizzati jistgħu jbatu jekk jiddeċiedu li jaċċessaw is-server.
Oqgħod attent li twissija ta' banner m'hi bl-ebda mod mod kif timblokka utenti mhux awtorizzati milli jidħlu. Il-banner ta' twissija huwa sempliċement twissija maħsuba biex twissi lill-utenti mhux awtorizzati milli jidħlu. Jekk trid timblokka utenti mhux awtorizzati milli jidħlu, allura SSH addizzjonali konfigurazzjonijiet huma meħtieġa.
Il-banner SSH fih xi informazzjoni ta' twissija tas-sigurtà jew informazzjoni ġenerali. Dawn li ġejjin huma xi eżempju ta 'messaġġi banner SSH li nuża fuq is-servers Linux tiegħi.
Eżempju SSH Banner Messaġġ 1:
################################################################# # _ _ _ _ # # / \ | | ___ _ __| |_| | # # / _ \ | |/ _ \ '__| __| | # # / ___ \| | __/ | | |_|_| # # /_/ \_\_|\___|_| \__(_) # # # # You are entering into a secured area! Your IP, Login Time, # # Username has been noted and has been sent to the server # # administrator! # # This service is restricted to authorized users only. All # # activities on this system are logged. # # Unauthorized access will be fully investigated and reported # # to the appropriate law enforcement agencies. # #################################################################
Eżempju SSH Banner Messaġġ 2:
ALERT! You are entering a secured area! Your IP, Login Time, and Username have been noted and have been sent to the server administrator! This service is restricted to authorized users only. All activities on this system are logged. Unauthorized access will be fully investigated and reported to the appropriate law enforcement agencies.
Hemm żewġ modi biex juru messaġġi wieħed qed juża l-fajl issue.net u t-tieni wieħed qed juża l-fajl MOTD.
- /etc/issue.net – Uri messaġġ ta' banner ta' twissija qabel il-pront ta' login tal-password.
- /etc/motd – Uri messaġġ banner ta' merħba wara li l-utent ikun illoggja.
Għalhekk, irrakkomandat bil-qawwa lill-amministraturi tas-sistema kollha juru messaġġi tal-banners qabel ma jippermettu lill-utenti jidħlu fis-sistemi. Sempliċement segwi passi sempliċi hawn taħt biex tippermetti l-messaġġi tal-illoggjar SSH.
Uri Messaġġ ta' Twissija SSH lill-Utenti Qabel Illoggja
Biex turi messaġġi ta' twissija SSH lill-utenti kollha mhux awtorizzati, trid taċċessa l-fajl /etc/issue.net biex turi messaġġi banner billi tuża l-editur tat-test preferut tiegħek.
$ sudo vi /etc/issue.net Or $ sudo nano /etc/issue.net
Żid il-messaġġ tal-kampjun tal-banner li ġej u ssejvja l-fajl. Tista 'żżid kwalunkwe messaġġ banner personalizzat ma' dan il-fajl.
################################################################# # _ _ _ _ # # / \ | | ___ _ __| |_| | # # / _ \ | |/ _ \ '__| __| | # # / ___ \| | __/ | | |_|_| # # /_/ \_\_|\___|_| \__(_) # # # # You are entering into a secured area! Your IP, Login Time, # # Username has been noted and has been sent to the server # # administrator! # # This service is restricted to authorized users only. All # # activities on this system are logged. # # Unauthorized access will be fully investigated and reported # # to the appropriate law enforcement agencies. # #################################################################
Sussegwentement, iftaħ il-fajl tal-konfigurazzjoni /etc/ssh/sshd_config.
$ sudo vi /etc/ssh/sshd_config Or $ sudo nano /etc/ssh/sshd_config
Fittex il-kelma Banner u neħħi l-kumment mill-linja u ssalva l-fajl.
#Banner /some/path
Għandu jkun hekk.
Banner /etc/issue.net (you can use any path you want)
Sussegwentement, ibda mill-ġdid id-daemon SSH biex jirrifletti bidliet ġodda.
$ sudo systemctl restart sshd Or $ sudo service restart sshd
Issa ipprova qabbad mas-server se tara messaġġ banner simili għal hawn taħt.
Uri Messaġġ ta' Merħba SSH lill-Utenti Wara l-Loggn
Biex turi messaġġi banner ta 'merħba SSH wara l-login, nużaw fajl /etc/motd, li jintuża biex juri messaġġi banner wara l-login.
$ sudo vi /etc/motd Or $ sudo nano /etc/motd
Poġġi l-messaġġ tal-kampjun tal-banner merħba li ġej u ssejvja l-fajl.
############################################################### # TECMINT.COM # ############################################################### # Welcome to TecMint.com! # # All connections are monitored and recorded. # # Disconnect IMMEDIATELY if you are not an authorized user! # ###############################################################
Issa erġa' ipprova illoggja fis-server int se tirċievi ż-żewġ messaġġi tal-banners. Ara l-screenshot mehmuża hawn taħt.
U hekk. Nittamaw li issa tista 'żżid il-messaġġi personalizzati tiegħek tal-banner SSH fuq is-server tiegħek biex tavża lill-utenti mhux awtorizzati milli jaċċessaw is-sistema.