C'est tout simple dans un terminal administrateur entrer la commande suivante:
apt-get update && apt-get install ufw
ufw enable
ce qui donne:
ufw enable
Command may disrupt existing ssh connections. Proceed with operation (y|n)?
Ce qui veut dire que la connexion SSH peut être interrompue… Pour tout laisser passer avant de démarrer ufw
ufw default allow
Après de démarrage d'ufw vous pouvez consulter son état et les règles qu'il applique
ufw status verbose
Status: active Logging: on (low) Default: allow (incoming), allow (outgoing) New profiles: skip
Ici Tout passe!
ufw disable
ufw default allow
ufw default deny
ufw allow port
ufw deny port
ufw status numbered
ufw delete <numéro-de-la-règle>
ufw status
ufw status verbose (plus d'info sont fournies)
Entrer la commande suivante:
ufw enable
La politique par défaut est la suivante, on autorise les connections sortantes et on interdit les connections entrantes.
Si vous entrez la commande suivante:
ufw status verbose
Vous aurez ceci comme réponse:
Status: active 02.Logging: on (low) 03.Default: deny (incoming), allow (outgoing) 04.New profiles: skip
Vous avez ainsi la configuration de base
ufw enable
ufw default deny incoming
ufw default deny outgoing
ufw logging on
Voir le fichier /etc/services
en bas de cette page.
ufw allow out 22/tcp
ufw allow in 22/tcp
ufw allow out 80/tcp
ufw allow out 53/udp
ufw allow out 443/tcp
ufw allow out 20/tcp
ufw allow out 21/tcp
smtp
ufw allow out 25/tcp
pop3
ufw allow out 110/tcp
pop3 sécurisé
ufw allow out 995/tcp
imap2
ufw allow out 143/tcp
imap3
ufw allow out 220/tcp
ufw allow out 4662/tcp
ufw allow out 4665/udp
ufw allow out 4672/udp
ufw allow out 6880:6999/tcp
ufw allow out 6880:6999/udp
ufw allow out 194/tcp
ufw allow out 6667/tcp
ufw disable && ufw enable
ufw delete allow out 80/tcp
cpmux 1/tcp # TCP port service multiplexer echo 7/tcp echo 7/udp discard 9/tcp sink null discard 9/udp sink null systat 11/tcp users daytime 13/tcp daytime 13/udp netstat 15/tcp qotd 17/tcp quote msp 18/tcp # message send protocol msp 18/udp chargen 19/tcp ttytst source chargen 19/udp ttytst source ftp-data 20/tcp ftp 21/tcp fsp 21/udp fspd ssh 22/tcp # SSH Remote Login Protocol ssh 22/udp telnet 23/tcp smtp 25/tcp mail time 37/tcp timserver time 37/udp timserver rlp 39/udp resource # resource location nameserver 42/tcp name # IEN 116 whois 43/tcp nicname tacacs 49/tcp # Login Host Protocol (TACACS) tacacs 49/udp re-mail-ck 50/tcp # Remote Mail Checking Protocol re-mail-ck 50/udp domain 53/tcp # name-domain server domain 53/udp mtp 57/tcp # deprecated tacacs-ds 65/tcp # TACACS-Database Service tacacs-ds 65/udp bootps 67/tcp # BOOTP server bootps 67/udp bootpc 68/tcp # BOOTP client bootpc 68/udp tftp 69/udp gopher 70/tcp # Internet Gopher gopher 70/udp rje 77/tcp netrjs finger 79/tcp www 80/tcp http # WorldWideWeb HTTP www 80/udp # HyperText Transfer Protocol link 87/tcp ttylink kerberos 88/tcp kerberos5 krb5 kerberos-sec # Kerberos v5 kerberos 88/udp kerberos5 krb5 kerberos-sec # Kerberos v5 supdup 95/tcp hostnames 101/tcp hostname # usually from sri-nic iso-tsap 102/tcp tsap # part of ISODE acr-nema 104/tcp dicom # Digital Imag. & Comm. 300 acr-nema 104/udp dicom # Digital Imag. & Comm. 300 csnet-ns 105/tcp cso-ns # also used by CSO name server csnet-ns 105/udp cso-ns rtelnet 107/tcp # Remote Telnet rtelnet 107/udp pop2 109/tcp postoffice pop-2 # POP version 2 pop2 109/udp pop-2 pop3 110/tcp pop-3 # POP version 3 pop3 110/udp pop-3 sunrpc 111/tcp portmapper # RPC 4.0 portmapper sunrpc 111/udp portmapper auth 113/tcp authentication tap ident sftp 115/tcp uucp-path 117/tcp nntp 119/tcp readnews untp # USENET News Transfer Protocol ntp 123/tcp ntp 123/udp # Network Time Protocol pwdgen 129/tcp # PWDGEN service pwdgen 129/udp # PWDGEN service loc-srv 135/tcp epmap # Location Service loc-srv 135/udp epmap netbios-ns 137/tcp # NETBIOS Name Service netbios-ns 137/udp netbios-dgm 138/tcp # NETBIOS Datagram Service netbios-dgm 138/udp netbios-ssn 139/tcp # NETBIOS session service netbios-ssn 139/udp imap2 143/tcp imap # Interim Mail Access P 2 and 4 imap2 143/udp imap snmp 161/tcp # Simple Net Mgmt Protocol snmp 161/udp # Simple Net Mgmt Protocol snmp-trap 162/tcp snmptrap # Traps for SNMP snmp-trap 162/udp snmptrap # Traps for SNMP cmip-man 163/tcp # ISO mgmt over IP (CMOT) cmip-man 163/udp cmip-agent 164/tcp cmip-agent 164/udp mailq 174/tcp # Mailer transport queue for Zmailer mailq 174/udp # Mailer transport queue for Zmailer xdmcp 177/tcp # X Display Mgr. Control Proto xdmcp 177/udp nextstep 178/tcp NeXTStep NextStep # NeXTStep window nextstep 178/udp NeXTStep NextStep # server bgp 179/tcp # Border Gateway Protocol bgp 179/udp prospero 191/tcp # Cliff Neuman's Prospero prospero 191/udp irc 194/tcp # Internet Relay Chat irc 194/udp smux 199/tcp # SNMP Unix Multiplexer smux 199/udp at-rtmp 201/tcp # AppleTalk routing at-rtmp 201/udp at-nbp 202/tcp # AppleTalk name binding at-nbp 202/udp at-echo 204/tcp # AppleTalk echo at-echo 204/udp at-zis 206/tcp # AppleTalk zone information at-zis 206/udp qmtp 209/tcp # Quick Mail Transfer Protocol qmtp 209/udp # Quick Mail Transfer Protocol z3950 210/tcp wais # NISO Z39.50 database z3950 210/udp wais ipx 213/tcp # IPX ipx 213/udp imap3 220/tcp # Interactive Mail Access imap3 220/udp # Protocol v3 pawserv 345/tcp # Perf Analysis Workbench pawserv 345/udp zserv 346/tcp # Zebra server zserv 346/udp fatserv 347/tcp # Fatmen Server fatserv 347/udp rpc2portmap 369/tcp rpc2portmap 369/udp # Coda portmapper codaauth2 370/tcp codaauth2 370/udp # Coda authentication server clearcase 371/tcp Clearcase clearcase 371/udp Clearcase ulistserv 372/tcp # UNIX Listserv ulistserv 372/udp ldap 389/tcp # Lightweight Directory Access Protocol ldap 389/udp imsp 406/tcp # Interactive Mail Support Protocol imsp 406/udp svrloc 427/tcp # Server Location svrloc 427/udp # Server Location https 443/tcp # http protocol over TLS/SSL https 443/udp snpp 444/tcp # Simple Network Paging Protocol snpp 444/udp microsoft-ds 445/tcp # Microsoft Naked CIFS microsoft-ds 445/udp kpasswd 464/tcp kpasswd 464/udp saft 487/tcp # Simple Asynchronous File Transfer saft 487/udp isakmp 500/tcp # IPsec - Internet Security Association isakmp 500/udp # and Key Management Protocol rtsp 554/tcp # Real Time Stream Control Protocol rtsp 554/udp # Real Time Stream Control Protocol nqs 607/tcp # Network Queuing system nqs 607/udp npmp-local 610/tcp dqs313_qmaster # npmp-local / DQS npmp-local 610/udp dqs313_qmaster npmp-gui 611/tcp dqs313_execd # npmp-gui / DQS npmp-gui 611/udp dqs313_execd hmmp-ind 612/tcp dqs313_intercell # HMMP Indication / DQS hmmp-ind 612/udp dqs313_intercell qmqp 628/tcp qmqp 628/udp ipp 631/tcp # Internet Printing Protocol ipp 631/udp # # UNIX specific services # exec 512/tcp biff 512/udp comsat login 513/tcp who 513/udp whod shell 514/tcp cmd # no passwords used syslog 514/udp printer 515/tcp spooler # line printer spooler talk 517/udp ntalk 518/udp route 520/udp router routed # RIP timed 525/udp timeserver tempo 526/tcp newdate courier 530/tcp rpc conference 531/tcp chat netnews 532/tcp readnews netwall 533/udp # for emergency broadcasts gdomap 538/tcp # GNUstep distributed objects gdomap 538/udp uucp 540/tcp uucpd # uucp daemon klogin 543/tcp # Kerberized `rlogin' (v5) kshell 544/tcp krcmd # Kerberized `rsh' (v5) dhcpv6-client 546/tcp dhcpv6-client 546/udp dhcpv6-server 547/tcp dhcpv6-server 547/udp afpovertcp 548/tcp # AFP over TCP afpovertcp 548/udp idfp 549/tcp idfp 549/udp remotefs 556/tcp rfs_server rfs # Brunhoff remote filesystem nntps 563/tcp snntp # NNTP over SSL nntps 563/udp snntp submission 587/tcp # Submission [RFC4409] submission 587/udp ldaps 636/tcp # LDAP over SSL ldaps 636/udp tinc 655/tcp # tinc control port tinc 655/udp silc 706/tcp silc 706/udp kerberos-adm 749/tcp # Kerberos `kadmin' (v5) # webster 765/tcp # Network dictionary webster 765/udp rsync 873/tcp rsync 873/udp ftps-data 989/tcp # FTP over SSL (data) ftps 990/tcp telnets 992/tcp # Telnet over SSL telnets 992/udp imaps 993/tcp # IMAP over SSL imaps 993/udp ircs 994/tcp # IRC over SSL ircs 994/udp pop3s 995/tcp # POP-3 over SSL pop3s 995/udp # # From ``Assigned Numbers'': # #> The Registered Ports are not controlled by the IANA and on most systems #> can be used by ordinary user processes or programs executed by ordinary #> users. # #> Ports are used in the TCP [45,106] to name the ends of logical #> connections which carry long term conversations. For the purpose of #> providing services to unknown callers, a service contact port is #> defined. This list specifies the port used by the server process as its #> contact port. While the IANA can not control uses of these ports it #> does register or list uses of these ports as a convienence to the #> community. # socks 1080/tcp # socks proxy server socks 1080/udp proofd 1093/tcp proofd 1093/udp rootd 1094/tcp rootd 1094/udp openvpn 1194/tcp openvpn 1194/udp rmiregistry 1099/tcp # Java RMI Registry rmiregistry 1099/udp kazaa 1214/tcp kazaa 1214/udp nessus 1241/tcp # Nessus vulnerability nessus 1241/udp # assessment scanner lotusnote 1352/tcp lotusnotes # Lotus Note lotusnote 1352/udp lotusnotes ms-sql-s 1433/tcp # Microsoft SQL Server ms-sql-s 1433/udp ms-sql-m 1434/tcp # Microsoft SQL Monitor ms-sql-m 1434/udp ingreslock 1524/tcp ingreslock 1524/udp prospero-np 1525/tcp # Prospero non-privileged prospero-np 1525/udp datametrics 1645/tcp old-radius datametrics 1645/udp old-radius sa-msg-port 1646/tcp old-radacct sa-msg-port 1646/udp old-radacct kermit 1649/tcp kermit 1649/udp l2f 1701/tcp l2tp l2f 1701/udp l2tp radius 1812/tcp radius 1812/udp radius-acct 1813/tcp radacct # Radius Accounting radius-acct 1813/udp radacct msnp 1863/tcp # MSN Messenger msnp 1863/udp unix-status 1957/tcp # remstats unix-status server log-server 1958/tcp # remstats log server remoteping 1959/tcp # remstats remoteping server cisco-sccp 2000/tcp # Cisco SCCP cisco-sccp 2000/udp search 2010/tcp ndtp pipe_server 2010/tcp nfs 2049/tcp # Network File System nfs 2049/udp # Network File System gnunet 2086/tcp gnunet 2086/udp rtcm-sc104 2101/tcp # RTCM SC-104 IANA 1/29/99 rtcm-sc104 2101/udp gsigatekeeper 2119/tcp gsigatekeeper 2119/udp gris 2135/tcp # Grid Resource Information Server gris 2135/udp # Grid Resource Information Server cvspserver 2401/tcp # CVS client/server operations cvspserver 2401/udp venus 2430/tcp # codacon port venus 2430/udp # Venus callback/wbc interface venus-se 2431/tcp # tcp side effects venus-se 2431/udp # udp sftp side effect codasrv 2432/tcp # not used codasrv 2432/udp # server port codasrv-se 2433/tcp # tcp side effects codasrv-se 2433/udp # udp sftp side effect mon 2583/tcp # MON traps mon 2583/udp dict 2628/tcp # Dictionary server dict 2628/udp gsiftp 2811/tcp gsiftp 2811/udp gpsd 2947/tcp gpsd 2947/udp gds_db 3050/tcp # InterBase server gds_db 3050/udp icpv2 3130/tcp icp # Internet Cache Protocol icpv2 3130/udp icp mysql 3306/tcp mysql 3306/udp nut 3493/tcp # Network UPS Tools nut 3493/udp distcc 3632/tcp # distributed compiler distcc 3632/udp daap 3689/tcp # Digital Audio Access Protocol daap 3689/udp svn 3690/tcp subversion # Subversion protocol svn 3690/udp subversion suucp 4031/tcp # UUCP over SSL suucp 4031/udp # UUCP over SSL sysrqd 4094/tcp # sysrq daemon sysrqd 4094/udp # sysrq daemon sieve 4190/tcp # ManageSieve Protocol epmd 4369/tcp # Erlang Port Mapper Daemon epmd 4369/udp # Erlang Port Mapper Daemon remctl 4373/tcp # Remote Authenticated Command Service remctl 4373/udp # Remote Authenticated Command Service iax 4569/tcp # Inter-Asterisk eXchange iax 4569/udp mtn 4691/tcp # monotone Netsync Protocol mtn 4691/udp # monotone Netsync Protocol radmin-port 4899/tcp # RAdmin Port radmin-port 4899/udp rfe 5002/udp # Radio Free Ethernet rfe 5002/tcp mmcc 5050/tcp # multimedia conference control tool (Yahoo IM) mmcc 5050/udp sip 5060/tcp # Session Initiation Protocol sip 5060/udp sip-tls 5061/tcp sip-tls 5061/udp aol 5190/tcp # AIM aol 5190/udp xmpp-client 5222/tcp jabber-client # Jabber Client Connection xmpp-client 5222/udp jabber-client xmpp-server 5269/tcp jabber-server # Jabber Server Connection xmpp-server 5269/udp jabber-server cfengine 5308/tcp cfengine 5308/udp mdns 5353/tcp # Multicast DNS mdns 5353/udp # Multicast DNS postgresql 5432/tcp postgres # PostgreSQL Database postgresql 5432/udp postgres freeciv 5556/tcp rptp # Freeciv gameplay freeciv 5556/udp amqp 5672/tcp amqp 5672/udp amqp 5672/sctp ggz 5688/tcp # GGZ Gaming Zone ggz 5688/udp # GGZ Gaming Zone x11 6000/tcp x11-0 # X Window System x11 6000/udp x11-0 x11-1 6001/tcp x11-1 6001/udp x11-2 6002/tcp x11-2 6002/udp x11-3 6003/tcp x11-3 6003/udp x11-4 6004/tcp x11-4 6004/udp x11-5 6005/tcp x11-5 6005/udp x11-6 6006/tcp x11-6 6006/udp x11-7 6007/tcp x11-7 6007/udp gnutella-svc 6346/tcp # gnutella gnutella-svc 6346/udp gnutella-rtr 6347/tcp # gnutella gnutella-rtr 6347/udp sge_qmaster 6444/tcp # Grid Engine Qmaster Service sge_qmaster 6444/udp # Grid Engine Qmaster Service sge_execd 6445/tcp # Grid Engine Execution Service sge_execd 6445/udp # Grid Engine Execution Service mysql-proxy 6446/tcp # MySQL Proxy mysql-proxy 6446/udp # MySQL Proxy afs3-fileserver 7000/tcp bbs # file server itself afs3-fileserver 7000/udp bbs afs3-callback 7001/tcp # callbacks to cache managers afs3-callback 7001/udp afs3-prserver 7002/tcp # users & groups database afs3-prserver 7002/udp afs3-vlserver 7003/tcp # volume location database afs3-vlserver 7003/udp afs3-kaserver 7004/tcp # AFS/Kerberos authentication afs3-kaserver 7004/udp afs3-volser 7005/tcp # volume managment server afs3-volser 7005/udp afs3-errors 7006/tcp # error interpretation service afs3-errors 7006/udp afs3-bos 7007/tcp # basic overseer process afs3-bos 7007/udp afs3-update 7008/tcp # server-to-server updater afs3-update 7008/udp afs3-rmtsys 7009/tcp # remote cache manager service afs3-rmtsys 7009/udp font-service 7100/tcp xfs # X Font Service font-service 7100/udp xfs http-alt 8080/tcp webcache # WWW caching service http-alt 8080/udp # WWW caching service bacula-dir 9101/tcp # Bacula Director bacula-dir 9101/udp bacula-fd 9102/tcp # Bacula File Daemon bacula-fd 9102/udp bacula-sd 9103/tcp # Bacula Storage Daemon bacula-sd 9103/udp xmms2 9667/tcp # Cross-platform Music Multiplexing System xmms2 9667/udp # Cross-platform Music Multiplexing System nbd 10809/tcp # Linux Network Block Device zabbix-agent 10050/tcp # Zabbix Agent zabbix-agent 10050/udp # Zabbix Agent zabbix-trapper 10051/tcp # Zabbix Trapper zabbix-trapper 10051/udp # Zabbix Trapper amanda 10080/tcp # amanda backup services amanda 10080/udp hkp 11371/tcp # OpenPGP HTTP Keyserver hkp 11371/udp # OpenPGP HTTP Keyserver bprd 13720/tcp # VERITAS NetBackup bprd 13720/udp bpdbm 13721/tcp # VERITAS NetBackup bpdbm 13721/udp bpjava-msvc 13722/tcp # BP Java MSVC Protocol bpjava-msvc 13722/udp vnetd 13724/tcp # Veritas Network Utility vnetd 13724/udp bpcd 13782/tcp # VERITAS NetBackup bpcd 13782/udp vopied 13783/tcp # VERITAS NetBackup vopied 13783/udp dcap 22125/tcp # dCache Access Protocol gsidcap 22128/tcp # GSI dCache Access Protocol wnn6 22273/tcp # wnn6 wnn6 22273/udp # # Datagram Delivery Protocol services # rtmp 1/ddp # Routing Table Maintenance Protocol nbp 2/ddp # Name Binding Protocol echo 4/ddp # AppleTalk Echo Protocol zip 6/ddp # Zone Information Protocol #========================================================================= # The remaining port numbers are not as allocated by IANA. #========================================================================= # Kerberos (Project Athena/MIT) services # Note that these are for Kerberos v4, and are unofficial. Sites running # v4 should uncomment these and comment out the v5 entries above. # kerberos4 750/udp kerberos-iv kdc # Kerberos (server) kerberos4 750/tcp kerberos-iv kdc kerberos_master 751/udp # Kerberos authentication kerberos_master 751/tcp passwd_server 752/udp # Kerberos passwd server krb_prop 754/tcp krb5_prop hprop # Kerberos slave propagation krbupdate 760/tcp kreg # Kerberos registration swat 901/tcp # swat kpop 1109/tcp # Pop with Kerberos knetd 2053/tcp # Kerberos de-multiplexor zephyr-srv 2102/udp # Zephyr server zephyr-clt 2103/udp # Zephyr serv-hm connection zephyr-hm 2104/udp # Zephyr hostmanager eklogin 2105/tcp # Kerberos encrypted rlogin # Hmmm. Are we using Kv4 or Kv5 now? Worrying. # The following is probably Kerberos v5 --- ajt@debian.org (11/02/2000) kx 2111/tcp # X over Kerberos iprop 2121/tcp # incremental propagation # # Unofficial but necessary (for NetBSD) services # supfilesrv 871/tcp # SUP server supfiledbg 1127/tcp # SUP debugging # # Services added for the Debian GNU/Linux distribution # linuxconf 98/tcp # LinuxConf poppassd 106/tcp # Eudora poppassd 106/udp ssmtp 465/tcp smtps # SMTP over SSL moira_db 775/tcp # Moira database moira_update 777/tcp # Moira update protocol moira_ureg 779/udp # Moira user registration spamd 783/tcp # spamassassin daemon omirr 808/tcp omirrd # online mirror omirr 808/udp omirrd customs 1001/tcp # pmake customs server customs 1001/udp skkserv 1178/tcp # skk jisho server port predict 1210/udp # predict -- satellite tracking rmtcfg 1236/tcp # Gracilis Packeten remote config server wipld 1300/tcp # Wipl network monitor xtel 1313/tcp # french minitel xtelw 1314/tcp # french minitel support 1529/tcp # GNATS cfinger 2003/tcp # GNU Finger frox 2121/tcp # frox: caching ftp proxy ninstall 2150/tcp # ninstall service ninstall 2150/udp zebrasrv 2600/tcp # zebra service zebra 2601/tcp # zebra vty ripd 2602/tcp # ripd vty (zebra) ripngd 2603/tcp # ripngd vty (zebra) ospfd 2604/tcp # ospfd vty (zebra) bgpd 2605/tcp # bgpd vty (zebra) ospf6d 2606/tcp # ospf6d vty (zebra) ospfapi 2607/tcp # OSPF-API isisd 2608/tcp # ISISd vty (zebra) afbackup 2988/tcp # Afbackup system afbackup 2988/udp afmbackup 2989/tcp # Afmbackup system afmbackup 2989/udp xtell 4224/tcp # xtell server fax 4557/tcp # FAX transmission service (old) hylafax 4559/tcp # HylaFAX client-server protocol (new) distmp3 4600/tcp # distmp3host daemon munin 4949/tcp lrrd # Munin enbd-cstatd 5051/tcp # ENBD client statd enbd-sstatd 5052/tcp # ENBD server statd pcrd 5151/tcp # PCR-1000 Daemon noclog 5354/tcp # noclogd with TCP (nocol) noclog 5354/udp # noclogd with UDP (nocol) hostmon 5355/tcp # hostmon uses TCP (nocol) hostmon 5355/udp # hostmon uses UDP (nocol) rplay 5555/udp # RPlay audio service nrpe 5666/tcp # Nagios Remote Plugin Executor nsca 5667/tcp # Nagios Agent - NSCA mrtd 5674/tcp # MRT Routing Daemon bgpsim 5675/tcp # MRT Routing Simulator canna 5680/tcp # cannaserver sane-port 6566/tcp sane saned # SANE network scanner daemon ircd 6667/tcp # Internet Relay Chat zope-ftp 8021/tcp # zope management by ftp tproxy 8081/tcp # Transparent Proxy omniorb 8088/tcp # OmniORB omniorb 8088/udp clc-build-daemon 8990/tcp # Common lisp build daemon xinetd 9098/tcp mandelspawn 9359/udp mandelbrot # network mandelbrot git 9418/tcp # Git Version Control System zope 9673/tcp # zope server webmin 10000/tcp kamanda 10081/tcp # amanda backup services (Kerberos) kamanda 10081/udp amandaidx 10082/tcp # amanda backup services amidxtape 10083/tcp # amanda backup services smsqp 11201/tcp # Alamin SMS gateway smsqp 11201/udp xpilot 15345/tcp # XPilot Contact Port xpilot 15345/udp sgi-cmsd 17001/udp # Cluster membership services daemon sgi-crsd 17002/udp sgi-gcd 17003/udp # SGI Group membership daemon sgi-cad 17004/tcp # Cluster Admin daemon isdnlog 20011/tcp # isdn logging system isdnlog 20011/udp vboxd 20012/tcp # voice box system vboxd 20012/udp binkp 24554/tcp # binkp fidonet protocol asp 27374/tcp # Address Search Protocol asp 27374/udp csync2 30865/tcp # cluster synchronization tool dircproxy 57000/tcp # Detachable IRC Proxy tfido 60177/tcp # fidonet EMSI over telnet fido 60179/tcp # fidonet EMSI over TCP # Local services