GET https://kbin.spritesserver.nl/index.php/m/linux@lemmy.ml/t/11766/Have-I-successfully-blocked-ssh-logins-to-root/comment/108001/votes/down

Response
200 OK
IP
216.73.216.97
Profiled on
Token
25cdcb

Security

Token

There is no security token.

Firewall

main Name
Security enabled
Stateless

Configuration

Key Value
provider security.user.provider.concrete.app_user_provider
context main
entry_point App\Security\KbinAuthenticator
user_checker App\Security\UserChecker
access_denied_handler (none)
access_denied_url (none)
authenticators 
[
  "two_factor"
  "remember_me"
  "App\Security\KbinAuthenticator"
  "App\Security\FacebookAuthenticator"
  "App\Security\GoogleAuthenticator"
  "App\Security\GithubAuthenticator"
  "App\Security\KeycloakAuthenticator"
]

Listeners

Listener Duration Response 
Symfony\Component\Security\Http\Firewall\ChannelListener {#723
  -map: Symfony\Component\Security\Http\AccessMap {#722 …}
  -logger: Monolog\Logger {#783 …}
  -httpPort: 80
  -httpsPort: 443
}
 0.00 ms (none) 
Symfony\Component\Security\Http\Firewall\ContextListener {#706
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage {#1017 …}
  -sessionKey: "_security_main"
  -logger: Monolog\Logger {#783 …}
  -userProviders: Symfony\Component\DependencyInjection\Argument\RewindableGenerator {#705 …}
  -dispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …}
  -registered: false
  -trustResolver: Scheb\TwoFactorBundle\Security\Authentication\AuthenticationTrustResolver {#780 …}
  -sessionTrackerEnabler: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage::enableUsageTracking(): void {#703 …}
}
 13.33 ms (none) 
Symfony\Component\Security\Http\Firewall\AuthenticatorManagerListener {#584
  -authenticatorManager: Symfony\Component\Security\Http\Authentication\AuthenticatorManager {#595 …}
}
 0.00 ms (none) 
Scheb\TwoFactorBundle\Security\Http\Firewall\TwoFactorAccessListener {#582
  -twoFactorFirewallConfig: Scheb\TwoFactorBundle\Security\TwoFactor\TwoFactorFirewallConfig {#842 …}
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -twoFactorAccessDecider: Scheb\TwoFactorBundle\Security\Authorization\TwoFactorAccessDecider {#581 …}
}
 0.05 ms (none) 
Symfony\Component\Security\Http\Firewall\AccessListener {#579
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -accessDecisionManager: Symfony\Component\Security\Core\Authorization\TraceableAccessDecisionManager {#937 …}
  -map: Symfony\Component\Security\Http\AccessMap {#722 …}
}
 0.00 ms (none) 
Symfony\Component\Security\Http\Firewall\LogoutListener {#786
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -options: [
    "csrf_parameter" => "_csrf_token"
    "csrf_token_id" => "logout"
    "logout_path" => "app_logout"
  ]
  -httpUtils: Symfony\Component\Security\Http\HttpUtils {#841 …}
  -csrfTokenManager: Symfony\Component\Security\Csrf\CsrfTokenManager {#1015 …}
  -eventDispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …}
}
 0.00 ms (none)

Authenticators

No authenticators have been recorded. Check previous profiles on your authentication endpoint.

Access Decision

affirmative Strategy
# Voter class
1 
"Symfony\Component\Security\Core\Authorization\Voter\AuthenticatedVoter"
2 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
3 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
4 
"Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter"
5 
"App\Security\Voter\EntryCommentVoter"
6 
"App\Security\Voter\EntryVoter"
7 
"App\Security\Voter\MagazineVoter"
8 
"App\Security\Voter\MessageThreadVoter"
9 
"App\Security\Voter\MessageVoter"
10 
"App\Security\Voter\NotificationVoter"
11 
"App\Security\Voter\OAuth2UserConsentVoter"
12 
"App\Security\Voter\PostCommentVoter"
13 
"App\Security\Voter\PostVoter"
14 
"App\Security\Voter\UserVoter"

Access decision log

# Result Attributes Object
1 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
2 DENIED moderate 
App\Entity\EntryComment {#1369
  +user: Proxies\__CG__\App\Entity\User {#1370 …}
  +entry: App\Entity\Entry {#1856 …}
  +magazine: App\Entity\Magazine {#312
    +icon: Proxies\__CG__\App\Entity\Image {#293 …}
    +name: "linux@lemmy.ml"
    +title: "linux"
    +description: """
      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 1406
    +entryCommentCount: 28632
    +postCount: 6
    +postCommentCount: 214
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729583542 {#320
      date: 2024-10-22 09:52:22.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#284 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#280 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#269 …}
    +entries: Doctrine\ORM\PersistentCollection {#227 …}
    +posts: Doctrine\ORM\PersistentCollection {#185 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#247 …}
    +bans: Doctrine\ORM\PersistentCollection {#164 …}
    +reports: Doctrine\ORM\PersistentCollection {#150 …}
    +badges: Doctrine\ORM\PersistentCollection {#128 …}
    +logs: Doctrine\ORM\PersistentCollection {#118 …}
    +awards: Doctrine\ORM\PersistentCollection {#107 …}
    +categories: Doctrine\ORM\PersistentCollection {#94 …}
    -id: 73
    +apId: "linux@lemmy.ml"
    +apProfileId: "https://lemmy.ml/c/linux"
    +apPublicUrl: "https://lemmy.ml/c/linux"
    +apFollowersUrl: "https://lemmy.ml/c/linux/followers"
    +apInboxUrl: "https://lemmy.ml/inbox"
    +apDomain: "lemmy.ml"
    +apPreferredUsername: "linux"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729583596 {#321
      date: 2024-10-22 09:53:16.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1698929468 {#315
      date: 2023-11-02 13:51:08.0 +01:00
    }
  }
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#2451 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#2451 …}
  +body: """
    > Ssh listens on port 22, as soon as a connection is made the host moves the connection to another port to free up 22 for other new connections.\n
    \n
    There’s no limit on the number of concurrent connections on a single port, and SSH runs completely on the one port it is configured to use. Otherwise allowing just the port 22 in firewall wouldn’t be enough to have a functional SSH connection with default settings.\n
    \n
    You can verify that quite easily for example by spinning up three barebone Debian VMs connected to a single virtual network, configuring the firewall on the “server” VM to drop everything other than port 22 and then connecting from both client VMs - it will work just fine.\n
    \n
    Maybe you’re confusing it with the fact that only one process can listen on a given port at a time? But that’s only for establishing new connections. Existing connections can be passed off to another running process or a child process just fine, and that’s how SSH handles separation between connections.\n
    \n
    Edit: oh, you’re talking about the high port OP is wondering about. That’s just the source port, which is chosen randomly by the client OS when making a connection. Using port 22 (or any other port below 1025) as a source port would require root privileges on the client and would also conflict with the SSH server that could be running there. Still, it has nothing to do with SSH “moving connections over”
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 4
  +score: 0
  +lastActive: DateTime @1699631807 {#1769
    date: 2023-11-10 16:56:47.0 +01:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@cyberwolfie@lemmy.ml"
    "@willybe@lemmy.ca"
  ]
  +children: Doctrine\ORM\PersistentCollection {#2356 …}
  +nested: Doctrine\ORM\PersistentCollection {#2355 …}
  +votes: Doctrine\ORM\PersistentCollection {#2428 …}
  +reports: Doctrine\ORM\PersistentCollection {#2436 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2490 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2409 …}
  -id: 108001
  -bodyTs: "'1025':217 '22':5,24,61,111,211 'allow':57 'also':231 'anoth':19,160 'barebon':89 'child':165 'chosen':199 'client':117,203,228 'complet':46 'concurr':37 'configur':53,98 'conflict':232 'confus':127 'connect':10,17,28,38,73,92,114,152,154,177,208,251 'could':238 'debian':90 'default':75 'drop':106 'easili':82 'edit':178 'enough':67 'establish':150 'everyth':107 'exampl':84 'exist':153 'fact':131 'fine':123,168 'firewal':63,100 'free':22 'function':71 'given':140 'handl':174 'high':185 'host':14 'limit':32 'listen':2,137 'made':12 'make':206 'mayb':124 'move':15,250 'network':97 'new':27,151 'noth':245 'number':35 'oh':179 'one':49,134 'op':187 'os':204 'otherwis':56 'pass':157 'port':4,20,42,50,60,110,141,186,196,210,215,221 'privileg':225 'process':135,162,166 'quit':81 'random':200 're':126,181 'requir':223 'root':224 'run':45,161,240 'separ':175 'server':103,236 'set':76 'singl':41,95 'soon':7 'sourc':195,220 'spin':86 'ssh':1,44,72,173,235,249 'still':242 'talk':182 'three':88 'time':144 'use':55,209 'verifi':79 'virtual':96 'vm':104 'vms':91,118 'wonder':189 'work':121 'would':222,230 'wouldn':64"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.one/comment/4586568"
  +editedAt: DateTimeImmutable @1699709401 {#1945
    date: 2023-11-11 14:30:01.0 +01:00
  }
  +createdAt: DateTimeImmutable @1699631807 {#1368
    date: 2023-11-10 16:56:47.0 +01:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
3 DENIED edit 
App\Entity\EntryComment {#1369
  +user: Proxies\__CG__\App\Entity\User {#1370 …}
  +entry: App\Entity\Entry {#1856 …}
  +magazine: App\Entity\Magazine {#312
    +icon: Proxies\__CG__\App\Entity\Image {#293 …}
    +name: "linux@lemmy.ml"
    +title: "linux"
    +description: """
      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 1406
    +entryCommentCount: 28632
    +postCount: 6
    +postCommentCount: 214
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729583542 {#320
      date: 2024-10-22 09:52:22.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#284 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#280 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#269 …}
    +entries: Doctrine\ORM\PersistentCollection {#227 …}
    +posts: Doctrine\ORM\PersistentCollection {#185 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#247 …}
    +bans: Doctrine\ORM\PersistentCollection {#164 …}
    +reports: Doctrine\ORM\PersistentCollection {#150 …}
    +badges: Doctrine\ORM\PersistentCollection {#128 …}
    +logs: Doctrine\ORM\PersistentCollection {#118 …}
    +awards: Doctrine\ORM\PersistentCollection {#107 …}
    +categories: Doctrine\ORM\PersistentCollection {#94 …}
    -id: 73
    +apId: "linux@lemmy.ml"
    +apProfileId: "https://lemmy.ml/c/linux"
    +apPublicUrl: "https://lemmy.ml/c/linux"
    +apFollowersUrl: "https://lemmy.ml/c/linux/followers"
    +apInboxUrl: "https://lemmy.ml/inbox"
    +apDomain: "lemmy.ml"
    +apPreferredUsername: "linux"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729583596 {#321
      date: 2024-10-22 09:53:16.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1698929468 {#315
      date: 2023-11-02 13:51:08.0 +01:00
    }
  }
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#2451 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#2451 …}
  +body: """
    > Ssh listens on port 22, as soon as a connection is made the host moves the connection to another port to free up 22 for other new connections.\n
    \n
    There’s no limit on the number of concurrent connections on a single port, and SSH runs completely on the one port it is configured to use. Otherwise allowing just the port 22 in firewall wouldn’t be enough to have a functional SSH connection with default settings.\n
    \n
    You can verify that quite easily for example by spinning up three barebone Debian VMs connected to a single virtual network, configuring the firewall on the “server” VM to drop everything other than port 22 and then connecting from both client VMs - it will work just fine.\n
    \n
    Maybe you’re confusing it with the fact that only one process can listen on a given port at a time? But that’s only for establishing new connections. Existing connections can be passed off to another running process or a child process just fine, and that’s how SSH handles separation between connections.\n
    \n
    Edit: oh, you’re talking about the high port OP is wondering about. That’s just the source port, which is chosen randomly by the client OS when making a connection. Using port 22 (or any other port below 1025) as a source port would require root privileges on the client and would also conflict with the SSH server that could be running there. Still, it has nothing to do with SSH “moving connections over”
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 4
  +score: 0
  +lastActive: DateTime @1699631807 {#1769
    date: 2023-11-10 16:56:47.0 +01:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@cyberwolfie@lemmy.ml"
    "@willybe@lemmy.ca"
  ]
  +children: Doctrine\ORM\PersistentCollection {#2356 …}
  +nested: Doctrine\ORM\PersistentCollection {#2355 …}
  +votes: Doctrine\ORM\PersistentCollection {#2428 …}
  +reports: Doctrine\ORM\PersistentCollection {#2436 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2490 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2409 …}
  -id: 108001
  -bodyTs: "'1025':217 '22':5,24,61,111,211 'allow':57 'also':231 'anoth':19,160 'barebon':89 'child':165 'chosen':199 'client':117,203,228 'complet':46 'concurr':37 'configur':53,98 'conflict':232 'confus':127 'connect':10,17,28,38,73,92,114,152,154,177,208,251 'could':238 'debian':90 'default':75 'drop':106 'easili':82 'edit':178 'enough':67 'establish':150 'everyth':107 'exampl':84 'exist':153 'fact':131 'fine':123,168 'firewal':63,100 'free':22 'function':71 'given':140 'handl':174 'high':185 'host':14 'limit':32 'listen':2,137 'made':12 'make':206 'mayb':124 'move':15,250 'network':97 'new':27,151 'noth':245 'number':35 'oh':179 'one':49,134 'op':187 'os':204 'otherwis':56 'pass':157 'port':4,20,42,50,60,110,141,186,196,210,215,221 'privileg':225 'process':135,162,166 'quit':81 'random':200 're':126,181 'requir':223 'root':224 'run':45,161,240 'separ':175 'server':103,236 'set':76 'singl':41,95 'soon':7 'sourc':195,220 'spin':86 'ssh':1,44,72,173,235,249 'still':242 'talk':182 'three':88 'time':144 'use':55,209 'verifi':79 'virtual':96 'vm':104 'vms':91,118 'wonder':189 'work':121 'would':222,230 'wouldn':64"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.one/comment/4586568"
  +editedAt: DateTimeImmutable @1699709401 {#1945
    date: 2023-11-11 14:30:01.0 +01:00
  }
  +createdAt: DateTimeImmutable @1699631807 {#1368
    date: 2023-11-10 16:56:47.0 +01:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
4 DENIED moderate 
App\Entity\EntryComment {#1369
  +user: Proxies\__CG__\App\Entity\User {#1370 …}
  +entry: App\Entity\Entry {#1856 …}
  +magazine: App\Entity\Magazine {#312
    +icon: Proxies\__CG__\App\Entity\Image {#293 …}
    +name: "linux@lemmy.ml"
    +title: "linux"
    +description: """
      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 1406
    +entryCommentCount: 28632
    +postCount: 6
    +postCommentCount: 214
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729583542 {#320
      date: 2024-10-22 09:52:22.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#284 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#280 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#269 …}
    +entries: Doctrine\ORM\PersistentCollection {#227 …}
    +posts: Doctrine\ORM\PersistentCollection {#185 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#247 …}
    +bans: Doctrine\ORM\PersistentCollection {#164 …}
    +reports: Doctrine\ORM\PersistentCollection {#150 …}
    +badges: Doctrine\ORM\PersistentCollection {#128 …}
    +logs: Doctrine\ORM\PersistentCollection {#118 …}
    +awards: Doctrine\ORM\PersistentCollection {#107 …}
    +categories: Doctrine\ORM\PersistentCollection {#94 …}
    -id: 73
    +apId: "linux@lemmy.ml"
    +apProfileId: "https://lemmy.ml/c/linux"
    +apPublicUrl: "https://lemmy.ml/c/linux"
    +apFollowersUrl: "https://lemmy.ml/c/linux/followers"
    +apInboxUrl: "https://lemmy.ml/inbox"
    +apDomain: "lemmy.ml"
    +apPreferredUsername: "linux"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729583596 {#321
      date: 2024-10-22 09:53:16.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1698929468 {#315
      date: 2023-11-02 13:51:08.0 +01:00
    }
  }
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#2451 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#2451 …}
  +body: """
    > Ssh listens on port 22, as soon as a connection is made the host moves the connection to another port to free up 22 for other new connections.\n
    \n
    There’s no limit on the number of concurrent connections on a single port, and SSH runs completely on the one port it is configured to use. Otherwise allowing just the port 22 in firewall wouldn’t be enough to have a functional SSH connection with default settings.\n
    \n
    You can verify that quite easily for example by spinning up three barebone Debian VMs connected to a single virtual network, configuring the firewall on the “server” VM to drop everything other than port 22 and then connecting from both client VMs - it will work just fine.\n
    \n
    Maybe you’re confusing it with the fact that only one process can listen on a given port at a time? But that’s only for establishing new connections. Existing connections can be passed off to another running process or a child process just fine, and that’s how SSH handles separation between connections.\n
    \n
    Edit: oh, you’re talking about the high port OP is wondering about. That’s just the source port, which is chosen randomly by the client OS when making a connection. Using port 22 (or any other port below 1025) as a source port would require root privileges on the client and would also conflict with the SSH server that could be running there. Still, it has nothing to do with SSH “moving connections over”
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 4
  +score: 0
  +lastActive: DateTime @1699631807 {#1769
    date: 2023-11-10 16:56:47.0 +01:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@cyberwolfie@lemmy.ml"
    "@willybe@lemmy.ca"
  ]
  +children: Doctrine\ORM\PersistentCollection {#2356 …}
  +nested: Doctrine\ORM\PersistentCollection {#2355 …}
  +votes: Doctrine\ORM\PersistentCollection {#2428 …}
  +reports: Doctrine\ORM\PersistentCollection {#2436 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2490 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2409 …}
  -id: 108001
  -bodyTs: "'1025':217 '22':5,24,61,111,211 'allow':57 'also':231 'anoth':19,160 'barebon':89 'child':165 'chosen':199 'client':117,203,228 'complet':46 'concurr':37 'configur':53,98 'conflict':232 'confus':127 'connect':10,17,28,38,73,92,114,152,154,177,208,251 'could':238 'debian':90 'default':75 'drop':106 'easili':82 'edit':178 'enough':67 'establish':150 'everyth':107 'exampl':84 'exist':153 'fact':131 'fine':123,168 'firewal':63,100 'free':22 'function':71 'given':140 'handl':174 'high':185 'host':14 'limit':32 'listen':2,137 'made':12 'make':206 'mayb':124 'move':15,250 'network':97 'new':27,151 'noth':245 'number':35 'oh':179 'one':49,134 'op':187 'os':204 'otherwis':56 'pass':157 'port':4,20,42,50,60,110,141,186,196,210,215,221 'privileg':225 'process':135,162,166 'quit':81 'random':200 're':126,181 'requir':223 'root':224 'run':45,161,240 'separ':175 'server':103,236 'set':76 'singl':41,95 'soon':7 'sourc':195,220 'spin':86 'ssh':1,44,72,173,235,249 'still':242 'talk':182 'three':88 'time':144 'use':55,209 'verifi':79 'virtual':96 'vm':104 'vms':91,118 'wonder':189 'work':121 'would':222,230 'wouldn':64"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.one/comment/4586568"
  +editedAt: DateTimeImmutable @1699709401 {#1945
    date: 2023-11-11 14:30:01.0 +01:00
  }
  +createdAt: DateTimeImmutable @1699631807 {#1368
    date: 2023-11-10 16:56:47.0 +01:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
5 DENIED edit 
App\Entity\Magazine {#312
  +icon: Proxies\__CG__\App\Entity\Image {#293 …}
  +name: "linux@lemmy.ml"
  +title: "linux"
  +description: """
    From Wikipedia, the free encyclopedia\n
    \n
    Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
    \n
    Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
    \n
    ### Rules\n
    \n
    - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
    - No misinformation\n
    - No NSFW content\n
    - No hate speech, bigotry, etc\n
    \n
    ### Related Communities\n
    \n
    - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
    - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
    - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
    - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
    \n
    Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
    """
  +rules: null
  +subscriptionsCount: 1
  +entryCount: 1406
  +entryCommentCount: 28632
  +postCount: 6
  +postCommentCount: 214
  +isAdult: false
  +customCss: null
  +lastActive: DateTime @1729583542 {#320
    date: 2024-10-22 09:52:22.0 +02:00
  }
  +markedForDeletionAt: null
  +tags: null
  +moderators: Doctrine\ORM\PersistentCollection {#284 …}
  +ownershipRequests: Doctrine\ORM\PersistentCollection {#280 …}
  +moderatorRequests: Doctrine\ORM\PersistentCollection {#269 …}
  +entries: Doctrine\ORM\PersistentCollection {#227 …}
  +posts: Doctrine\ORM\PersistentCollection {#185 …}
  +subscriptions: Doctrine\ORM\PersistentCollection {#247 …}
  +bans: Doctrine\ORM\PersistentCollection {#164 …}
  +reports: Doctrine\ORM\PersistentCollection {#150 …}
  +badges: Doctrine\ORM\PersistentCollection {#128 …}
  +logs: Doctrine\ORM\PersistentCollection {#118 …}
  +awards: Doctrine\ORM\PersistentCollection {#107 …}
  +categories: Doctrine\ORM\PersistentCollection {#94 …}
  -id: 73
  +apId: "linux@lemmy.ml"
  +apProfileId: "https://lemmy.ml/c/linux"
  +apPublicUrl: "https://lemmy.ml/c/linux"
  +apFollowersUrl: "https://lemmy.ml/c/linux/followers"
  +apInboxUrl: "https://lemmy.ml/inbox"
  +apDomain: "lemmy.ml"
  +apPreferredUsername: "linux"
  +apDiscoverable: true
  +apManuallyApprovesFollowers: null
  +privateKey: null
  +publicKey: null
  +apFetchedAt: DateTime @1729583596 {#321
    date: 2024-10-22 09:53:16.0 +02:00
  }
  +apDeletedAt: null
  +apTimeoutAt: null
  +visibility: "visible             "
  +createdAt: DateTimeImmutable @1698929468 {#315
    date: 2023-11-02 13:51:08.0 +01:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS DENIED 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details