Firewall, seguridad y puertos de la PC.?

Question

Quisiera saber que puertos debo abrir y cuales debo cerrar en un firewall para proteger mi red lo más posible. Tengo un par de PCs conectas a internet a través del coyote linux y uso el firewall que trae incluido, pero no se que puertos tengo que dejar abiertos y que riesgos pueden traer. Normalmente lo único que uso es explorer para abrir páginas web y para ftp. También quisiera saber que puertos ponen en riesgo a mis equipos y si conocen alguna página buena para aprender algo más de seguridad en redes. Desde ya MIL GRACIAS al que me pueda brindar alguna información.

Answer 1

Aqui te va un listado de Puertos utilizados por Troyanos:

puerto 1 (UDP) - Sockets des Troie
puerto 2 Death
puerto 15 B2
puerto 20 Senna Spy FTP server
puerto 21 Back Construction, Blade Runner, Cattivik FTP Server, CC Invader, Dark FTP, Doly Trojan, Fore, FreddyK, Invisible FTP, Juggernaut 42, Larva, MotIv FTP, Net Administrator, Ramen, RTB 666, Senna Spy FTP server, The Flu, Traitor 21, WebEx, WinCrash
puerto 22 Adore sshd, Shaft
puerto 23 ADM worm, Fire HacKer, My Very Own trojan, RTB 666, Telnet Pro, Tiny Telnet Server - TTS, Truva Atl
puerto 25 Ajan, Antigen, Barok, BSE, Email Password Sender - EPS, EPS II, Gip, Gris, Happy99, Hpteam mail, Hybris, I love you, Kuang2, Magic Horse, MBT (Mail Bombing Trojan), Moscow Email trojan, Naebi, NewApt worm, ProMail trojan, Shtirlitz, Stealth, Stukach, Tapiras, Terminator, WinPC, WinSpy
puerto 30 Agent 40421
puerto 31 Agent 31, Hackers Paradise, Masters Paradise
puerto 39 SubSARI
puerto 41 Deep Throat, Foreplay
puerto 44 Arctic
puerto 48 DRAT
puerto 50 DRAT
puerto 53 ADM worm, Lion
puerto 58 DMSetup
puerto 59 DMSetup
puerto 69 BackGate
puerto 79 CDK, Firehotcker
puerto 80 711 trojan (Seven Eleven), AckCmd, Back End, Back Orifice 2000 Plug-Ins, Cafeini, CGI Backdoor, Executor, God Message, God Message 4 Creator, Hooker, IISworm, MTX, NCX, Noob, Ramen, Reverse WWW Tunnel Backdoor, RingZero, RTB 666, Seeker, WAN Remote, Web Server CT, WebDownloader
puerto 81 RemoConChubo
puerto 99 Hidden
puerto, Mandragore, NCX
puerto 110 ProMail trojan
puerto 113 Invisible Identd Deamon, Kazimas
puerto 119 Happy99
puerto 121 Attack Bot, God Message, JammerKillah
puerto 123 Net Controller
puerto 133 Farnaz
puerto 137 Chode
puerto 137 (UDP) - Msinit, Qaz
puerto 138 Chode
puerto 139 Chode, God Message worm, Msinit, Netlog, Network, Qaz, Sadmind, SMB Relay
puerto 142 NetTaxi
puerto 146 Infector
puerto 146 (UDP) - Infector
puerto 166 NokNok
puerto 170 A-trojan
puerto 334 Backage
puerto 411 Backage
puerto 420 Breach, Incognito
puerto 421 TCP Wrappers trojan
puerto 455 Fatal Connections
puerto 456 Hackers Paradise
puerto 511 T0rn Rootkit
puerto 513 Grlogin
puerto 514 RPC Backdoor
puerto 515 lpdw0rm, Ramen
puerto 531 Net666, Rasmin
puerto 555 711 trojan (Seven Eleven), Ini-Killer, Net Administrator, Phase Zero, Phase-0, Stealth Spy
puerto 600 Sadmind
puerto 605 Secret Service
puerto 661 NokNok
puerto 666 Attack FTP, Back Construction, BLA trojan, Cain & Abel, lpdw0rm, NokNok, Satans Back Door - SBD, ServU, Shadow Phyre, th3r1pp3rz (= Therippers)
puerto 667 SniperNet
puerto 668 th3r1pp3rz (= Therippers)
puerto 669 DP trojan
puerto 692 GayOL
puerto 777 AimSpy, Undetected
puerto 808 WinHole
puerto 911 Dark Shadow, Dark Shadow
puerto 999 Chat power, Deep Throat, Foreplay, WinSatan
puerto 1000 Connecter, Der Späher / Der Spaeher, Direct Connection
puerto 1001 Der Späher / Der Spaeher, Le Guardien, Silencer, Theef, WebEx
puerto 1005 Theef
puerto 1008 Lion
puerto 1010 Doly Trojan
puerto 1011 Doly Trojan
puerto 1012 Doly Trojan
puerto 1015 Doly Trojan
puerto 1016 Doly Trojan
puerto 1020 Vampire
puerto 1024 Jade, Latinus, NetSpy, Remote Administration Tool - RAT [no 2]
puerto 1025 Fraggle Rock, md5 Backdoor, NetSpy, Remote Storm
puerto 1025 (UDP) - Remote Storm
puerto 1031 Xanadu
puerto 1035 Multidropper
puerto 1042 BLA trojan
puerto 1042 (UDP) - BLA trojan
puerto 1045 Rasmin
puerto 1049 /sbin/initd
puerto 1050 MiniCommand
puerto 1053 The Thief
puerto 1054 AckCmd
puerto 1080 SubSeven 2.2, WinHole
puerto 1081 WinHole
puerto 1082 WinHole
puerto 1083 WinHole
puerto 1090 Xtreme
puerto 1095 Remote Administration Tool - RAT
puerto 1097 Remote Administration Tool - RAT
puerto 1098 Remote Administration Tool - RAT
puerto 1099 Blood Fest Evolution, Remote Administration Tool - RAT
puerto 1104 (UDP) - RexxRave
puerto 1150 Orion
puerto 1151 Orion
puerto 1170 Psyber Stream Server - PSS, Streaming Audio Server, Voice
puerto 1174 DaCryptic
puerto 1180 Unin68
puerto 1200 (UDP) - NoBackO
puerto 1201 (UDP) - NoBackO
puerto 1207 SoftWAR
puerto 1208 Infector
puerto 1212 Kaos
puerto 1234 SubSeven Java client, Ultors Trojan
puerto 1243 BackDoor-G, SubSeven, SubSeven Apocalypse, Tiles
puerto 1245 VooDoo Doll
puerto 1255 Scarab
puerto 1256 Project nEXT, RexxRave
puerto 1269 Matrix
puerto 1272 The Matrix
puerto 1313 NETrojan
puerto 1337 Shadyshell
puerto 1338 Millennium Worm
puerto 1349 Bo dll
puerto 1386 Dagger
puerto 1394 GoFriller
puerto 1441 Remote Storm
puerto 1492 FTP99CMP
puerto 1524 Trinoo
puerto 1568 Remote Hack
puerto 1600 Direct Connection, Shivka-Burka
puerto 1703 Exploiter
puerto 1777 Scarab
puerto 1807 SpySender
puerto 1826 Glacier
puerto 1966 Fake FTP
puerto 1967 For Your Eyes Only - FYEO, WM FTP Server
puerto 1969 OpC BO
puerto 1981 Bowl, Shockrave
puerto 1991 PitFall
puerto 1999 Back Door, SubSeven, TransScout
puerto 2000 Der Späher / Der Spaeher, Insane Network, Last 2000, Remote Explorer 2000, Senna Spy Trojan Generator
puerto 2001 Der Späher / Der Spaeher, Trojan Cow
puerto 2023 Ripper Pro
puerto 2080 WinHole
puerto 2115 Bugs
puerto 2130 (UDP) - Mini Backlash
puerto 2140 The Invasor
puerto 2140 (UDP) - Deep Throat, Foreplay
puerto 2155 Illusion Mailer
puerto 2255 Nirvana
puerto 2283 Hvl RAT
puerto 2300 Xplorer
puerto 2311 Studio 54
puerto 2330 IRC Contact
puerto 2331 IRC Contact
puerto 2332 IRC Contact
puerto 2333 IRC Contact
puerto 2334 IRC Contact
puerto 2335 IRC Contact
puerto 2336 IRC Contact
puerto 2337 IRC Contact
puerto 2338 IRC Contact
puerto 2339 IRC Contact, Voice Spy
puerto 2339 (UDP) - Voice Spy
puerto 2345 Doly Trojan
puerto 2400
puertod
puerto 2555 Lion, T0rn Rootkit
puerto 2565 Striker trojan
puerto 2583 WinCrash
puerto 2589 Dagger
puerto 2600 Digital RootBeer
puerto 2702 Black Diver
puerto 2716 The Prayer
puerto 2773 SubSeven, SubSeven 2.1 Gold
puerto 2774 SubSeven, SubSeven 2.1 Gold
puerto 2801 Phineas Phucker
puerto 2929 Konik
puerto 2989 (UDP) - Remote Administration Tool - RAT
puerto 3000 InetSpy, Remote Shut
puerto 3024 WinCrash
puerto 3031 Microspy
puerto 3128 Reverse WWW Tunnel Backdoor, RingZero
puerto 3129 Masters Paradise
puerto 3131 SubSARI
puerto 3150 The Invasor
puerto 3150 (UDP) - Deep Throat, Foreplay, Mini Backlash
puerto 3456 Terror trojan
puerto 3459 Eclipse 2000, Sanctuary
puerto 3700
puertoal of Doom
puerto 3777 PsychWard
puerto 3791 Total Solar Eclypse
puerto 3801 Total Solar Eclypse
puerto 4000 Connect-Back Backdoor, SkyDance
puerto 4092 WinCrash
puerto 4201 War trojan
puerto 4242 Virtual Hacking Machine - VHM
puerto 4321 BoBo
puerto 4444 CrackDown, Prosiak, Swift Remote
puerto 4488 Event Horizon
puerto 4523 Celine
puerto 4545 Internal Revise
puerto 4567 File Nail
puerto 4590 ICQ Trojan
puerto 4653 Cero
puerto 4666 Mneah
puerto 4950 ICQ Trogen (Lm)
puerto 5000 Back Door Setup, BioNet Lite, Blazer5, Bubbel, ICKiller, Ra1d, Sockets des Troie
puerto 5001 Back Door Setup, Sockets des Troie
puerto 5002 cd00r, Linux Rootkit IV (4), Shaft
puerto 5005 Aladino
puerto 5010 Solo
puerto 5011 One of the Last Trojans - OOTLT, One of the Last Trojans - OOTLT, modified
puerto 5025 WM Remote KeyLogger
puerto 5031 Net Metropolitan
puerto 5032 Net Metropolitan
puerto 5321 Firehotcker
puerto 5333 Backage, NetDemon
puerto 5343 WC Remote Administration Tool - wCrat
puerto 5400 Back Construction, Blade Runner
puerto 5401 Back Construction, Blade Runner, Mneah
puerto 5402 Back Construction, Blade Runner, Mneah
puerto 5512 Illusion Mailer
puerto 5534 The Flu
puerto 5550 Xtcp
puerto 5555 ServeMe
puerto 5556 BO Facil
puerto 5557 BO Facil
puerto 5569 Robo-Hack
puerto 5637 PC Crasher
puerto 5638 PC Crasher
puerto 5742 WinCrash
puerto 5760
puertomap Remote Root Linux Exploit
puerto 5802 Y3K RAT
puerto 5873 SubSeven 2.2
puerto 5880 Y3K RAT
puerto 5882 Y3K RAT
puerto 5882 (UDP) - Y3K RAT
puerto 5888 Y3K RAT
puerto 5888 (UDP) - Y3K RAT
puerto 5889 Y3K RAT
puerto 6000 The Thing
puerto 6006 Bad Blood
puerto 6272 Secret Service
puerto 6400 The Thing
puerto 6661 TEMan, Weia-Meia
puerto 6666 Dark Connection Inside, NetBus worm
puerto 6667 Dark FTP, EGO, Maniac rootkit, Moses, ScheduleAgent, SubSeven, Subseven 2.1.4 DefCon 8, The Thing (modified), Trinity, WinSatan
puerto 6669 Host Control, Vampire
puerto 6670 BackWeb Server, Deep Throat, Foreplay, WinNuke eXtreame
puerto 6711 BackDoor-G, SubSARI, SubSeven, VP Killer
puerto 6712 Funny trojan, SubSeven
puerto 6713 SubSeven
puerto 6723 Mstream
puerto 6767 UandMe
puerto 6771 Deep Throat, Foreplay
puerto 6776 2000 Cracks, BackDoor-G, SubSeven, VP Killer
puerto 6838 (UDP) - Mstream
puerto 6883 Delta Source DarkStar (??)
puerto 6912 Shit Heep
puerto 6939 Indoctrination
puerto 6969 2000 Cracks, Danton, GateCrasher, IRC 3, Net Controller, Priority
puerto 6970 GateCrasher
puerto 7000 Exploit Translation Server, Kazimas, Remote Grab, SubSeven, SubSeven 2.1 Gold
puerto 7001 Freak88, Freak2k, NetSnooper Gold
puerto 7158 Lohoboyshik
puerto 7215 SubSeven, SubSeven 2.1 Gold
puerto 7300 NetMonitor
puerto 7301 NetMonitor
puerto 7306 NetMonitor
puerto 7307 NetMonitor, Remote Process Monitor
puerto 7308 NetMonitor, X Spy
puerto 7424 Host Control
puerto 7424 (UDP) - Host Control
puerto 7597 Qaz
puerto 7626 Binghe, Glacier, Hyne
puerto 7718 Glacier
puerto 7777 God Message, The Thing (modified), Tini
puerto 7789 Back Door Setup, ICKiller, Mozilla
puerto 7826 Oblivion
puerto 7891 The ReVeNgEr
puerto 7983 Mstream
puerto 8080 Brown Orifice, Generic backdoor, RemoConChubo, Reverse WWW Tunnel Backdoor, RingZero
puerto 8685 Unin68
puerto 8787 Back Orifice 2000
puerto 8812 FraggleRock Lite
puerto 8988 BacHack
puerto 8989 Rcon, Recon, Xcon
puerto 9000 Netministrator
puerto 9325 (UDP) - Mstream
puerto 9400 InCommand
puerto 9870 Remote Computer Control Center
puerto 9872
puertoal of Doom
puerto 9873
puertoal of Doom
puerto 9874
puertoal of Doom
puerto 9875
puertoal of Doom
puerto 9876 Cyber Attacker, Rux
puerto 9878 TransScout
puerto 9989 Ini-Killer
puerto 9999 The Prayer
puerto 10000 OpwinTRojan
puerto 10005 OpwinTRojan
puerto 10008 Cheese worm, Lion
puerto 10067 (UDP) -
puertoal of Doom
puerto 10085 Syphillis
puerto 10086 Syphillis
puerto 10100 Control Total, GiFt trojan
puerto 10101 BrainSpy, Silencer
puerto 10167 (UDP) -
puertoal of Doom
puerto 10520 Acid Shivers
puerto 10528 Host Control
puerto 10607 Coma
puerto 10666 (UDP) - Ambush
puerto 11000 Senna Spy Trojan Generator
puerto 11050 Host Control
puerto 11051 Host Control
puerto 11223 Progenic trojan, Secret Agent
puerto 11831 Latinus
puerto 12076 Gjamer
puerto 12223 Hack´99 KeyLogger
puerto 12310 PreCursor
puerto 12345 Adore sshd, Ashley, cron / crontab, Fat Bitch trojan, GabanBus, icmp_client.c, icmp_pipe.c, Mypic, NetBus, NetBus Toy, NetBus worm, Pie Bill Gates, ValvNet, Whack Job, X-bill
puerto 12346 Fat Bitch trojan, GabanBus, NetBus, X-bill
puerto 12348 BioNet
puerto 12349 BioNet, Webhead
puerto 12361 Whack-a-mole
puerto 12362 Whack-a-mole
puerto 12363 Whack-a-mole
puerto 12623 (UDP) - DUN Control
puerto 12624 ButtMan
puerto 12631 Whack Job
puerto 12754 Mstream
puerto 13000 Senna Spy Trojan Generator, Senna Spy Trojan Generator
puerto 13010 BitchController, Hacker Brasil - HBR
puerto 13013 PsychWard
puerto 13014 PsychWard
puerto 13223 Hack´99 KeyLogger
puerto 13473 Chupacabra
puerto 14500 PC Invader
puerto 14501 PC Invader
puerto 14502 PC Invader
puerto 14503 PC Invader
puerto 15000 NetDemon
puerto 15092 Host Control
puerto 15104 Mstream
puerto 15382 SubZero
puerto 15858 CDK
puerto 16484 Mosucker
puerto 16660 Stacheldraht
puerto 16772 ICQ Revenge
puerto 16959 SubSeven, Subseven 2.1.4 DefCon 8
puerto 16969 Priority
puerto 17166 Mosaic
puerto 17300 Kuang2 the virus
puerto 17449 Kid Terror
puerto 17499 CrazzyNet
puerto 17500 CrazzyNet
puerto 17569 Infector
puerto 17593 AudioDoor
puerto 17777 Nephron
puerto 18667 Knark
puerto 18753 (UDP) - Shaft
puerto 19864 ICQ Revenge
puerto 20000 Millenium
puerto 20001 Insect, Millenium, Millenium (Lm)
puerto 20002 AcidkoR
puerto 20005 Mosucker
puerto 20023 VP Killer
puerto 20034 NetBus 2.0 Pro, NetBus 2.0 Pro Hidden, NetRex, Whack Job
puerto 20203 Chupacabra
puerto 20331 BLA trojan
puerto 20432 Shaft
puerto 20433 (UDP) - Shaft
puerto 21544 GirlFriend, Kid Terror, Matrix
puerto 21554 Exploiter, FreddyK, Kid Terror, Schwindler, Winsp00fer
puerto 21579 Breach
puerto 21957 Latinus
puerto 22222 Donald Dick, Prosiak, Ruler, RUX The TIc.K
puerto 23005 NetTrash, Olive, Oxon
puerto 23006 NetTrash
puerto 23023 Logged
puerto 23032 Amanda
puerto 23321 Konik
puerto 23432 Asylum
puerto 23456 Evil FTP, Ugly FTP, Whack Job
puerto 23476 Donald Dick
puerto 23476 (UDP) - Donald Dick
puerto 23477 Donald Dick
puerto 23777 InetSpy
puerto 24000 Infector
puerto 24289 Latinus
puerto 25123 Goy'Z TroJan
puerto 25555 FreddyK
puerto 25685 MoonPie
puerto 25686 MoonPie
puerto 25982 MoonPie
puerto 26274 (UDP) - Delta Source
puerto 26681 Voice Spy
puerto 27160 MoonPie
puerto 27374 Bad Blood, EGO, Fake SubSeven, Lion, Ramen, Seeker, SubSeven, SubSeven 2.1 Gold, Subseven 2.1.4 DefCon 8, SubSeven 2.2, SubSeven Muie, The Saint, Ttfloader, Webhead
puerto 27444 (UDP) - Trinoo
puerto 27573 SubSeven
puerto 27665 Trinoo
puerto 28431 Hack´a´Tack
puerto 28678 Exploiter
puerto 29104 NetTrojan
puerto 29292 BackGate
puerto 29369 ovasOn
puerto 29559 Latinus
puerto 29891 The Unexplained
puerto 30000 Infector
puerto 30001 ErrOr32
puerto 30003 Lamers Death
puerto 30005 Backdoor JZ
puerto 30029 AOL trojan
puerto 30100 NetSphere
puerto 30101 NetSphere
puerto 30102 NetSphere
puerto 30103 NetSphere
puerto 30103 (UDP) - NetSphere
puerto 30133 NetSphere
puerto 30303 Sockets des Troie
puerto 30700 Mantis
puerto 30947 Intruse
puerto 30999 Kuang2
puerto 31221 Knark
puerto 31335 Trinoo
puerto 31336 Bo Whack, Butt Funnel
puerto 31337 ADM worm, Back Fire, Back Orifice 1.20 patches, Back Orifice (Lm), Back Orifice russian, Baron Night, Beeone, bindshell, BO client, BO Facil, BO spy, BO2, cron / crontab, Freak88, Freak2k, Gummo, icmp_pipe.c, Linux Rootkit IV (4), Sm4ck, Sockdmini
puerto 31337 (UDP) - Back Orifice, Deep BO
puerto 31338 Back Orifice, Butt Funnel, NetSpy (DK)
puerto 31338 (UDP) - Deep BO, NetSpy (DK)
puerto 31339 NetSpy (DK), NetSpy (DK)
puerto 31557 Xanadu
puerto 31666 BOWhack
puerto 31745 BuschTrommel
puerto 31785 Hack´a´Tack
puerto 31787 Hack´a´Tack
puerto 31788 Hack´a´Tack
puerto 31789 (UDP) - Hack´a´Tack
puerto 31790 Hack´a´Tack
puerto 31791 (UDP) - Hack´a´Tack
puerto 31792 Hack´a´Tack
puerto 32001 Donald Dick
puerto 32100 Peanut Brittle, Project nEXT
puerto 32418 Acid Battery
puerto 32791 Acropolis
puerto 33270 Trinity
puerto 33333 Blakharaz, Prosiak
puerto 33567 Lion, T0rn Rootkit
puerto 33568 Lion, T0rn Rootkit
puerto 33577 Son of PsychWard
puerto 33777 Son of PsychWard
puerto 33911 Spirit 2000, Spirit 2001
puerto 34324 Big Gluck, TN
puerto 34444 Donald Dick
puerto 34555 (UDP) - Trinoo (for Windows)
puerto 35555 (UDP) - Trinoo (for Windows)
puerto 37237 Mantis
puerto 37266 The Killer Trojan
puerto 37651 Yet Another Trojan - YAT
puerto 38741 CyberSpy
puerto 39507 Busters
puerto 40412 The Spy
puerto 40421 Agent 40421, Masters Paradise
puerto 40422 Masters Paradise
puerto 40423 Masters Paradise
puerto 40425 Masters Paradise
puerto 40426 Masters Paradise
puerto 41337 Storm
puerto 41666 Remote Boot Tool - RBT, Remote Boot Tool - RBT
puerto 44444 Prosiak
puerto 44575 Exploiter
puerto 44767 (UDP) - School Bus
puerto 45559 Maniac rootkit
puerto 45673 Acropolis
puerto 47017 T0rn Rootkit
puerto 47262 (UDP) - Delta Source
puerto 48004 Fraggle Rock
puerto 48006 Fraggle Rock
puerto 49000 Fraggle Rock
puerto 49301 OnLine KeyLogger
puerto 50000 SubSARI
puerto 50130 Enterprise
puerto 50505 Sockets des Troie
puerto 50766 Fore, Schwindler
puerto 51966 Cafeini
puerto 52317 Acid Battery 2000
puerto 53001 Remote Windows Shutdown - RWS
puerto 54283 SubSeven, SubSeven 2.1 Gold
puerto 54320 Back Orifice 2000
puerto 54321 Back Orifice 2000, School Bus
puerto 55165 File Manager trojan, File Manager trojan, WM Trojan Generator
puerto 55166 WM Trojan Generator
puerto 57341 NetRaider
puerto 58339 Butt Funnel
puerto 60000 Deep Throat, Foreplay, Sockets des Troie
puerto 60001 Trinity
puerto 60008 Lion, T0rn Rootkit
puerto 60068 Xzip 6000068
puerto 60411 Connection
puerto 61348 Bunker-Hill
puerto 61466 TeleCommando
puerto 61603 Bunker-Hill
puerto 63485 Bunker-Hill
puerto 64101 Taskman
puerto 65000 Devil, Sockets des Troie, Stacheldraht
puerto 65390 Eclypse
puerto 65421 Jade
puerto 65432 The Traitor (= th3tr41t0r)
puerto 65432 (UDP) - The Traitor (= th3tr41t0r)
puerto 65530 Windows Mite
puerto 65534 /sbin/initd
puerto 65535 Adore worm, RC1 trojan, Sins

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Answer 2

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