GET https://kbin.spritesserver.nl/m/linux@lemmy.ml/t/33772/Firewall-preventing-Printing-Scanning-on-OpenSUSE-Tumbleweed/favourites

Response
200 OK
IP
18.188.143.21
Profiled on
Token
d7a0a3

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 …}
}
 0.15 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 …}
}
 0.04 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\Entry {#1790
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  +magazine: App\Entity\Magazine {#316
    +icon: Proxies\__CG__\App\Entity\Image {#297 …}
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    +title: "linux"
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      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: 1399
    +entryCommentCount: 28492
    +postCount: 6
    +postCommentCount: 213
    +isAdult: false
    +customCss: null
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      date: 2024-10-19 16:02:57.0 +02:00
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    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#288 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#284 …}
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    +posts: Doctrine\ORM\PersistentCollection {#189 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#251 …}
    +bans: Doctrine\ORM\PersistentCollection {#168 …}
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    +logs: Doctrine\ORM\PersistentCollection {#122 …}
    +awards: Doctrine\ORM\PersistentCollection {#111 …}
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    +apPreferredUsername: "linux"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729346819 {#320
      date: 2024-10-19 14:06:59.208884 UTC (+00:00)
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1698929468 {#319
      date: 2023-11-02 13:51:08.0 +01:00
    }
  }
  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#1837 …}
  +slug: "Firewall-preventing-Printing-Scanning-on-OpenSUSE-Tumbleweed"
  +title: "Firewall preventing Printing/Scanning on OpenSUSE Tumbleweed"
  +url: null
  +body: """
    Hello, I’m trying to use my Epson XP-200 printer/scanner with OpenSUSE Tumblweed.\n
    \n
    - /etc/sane.d/dll.conf has the “epson2” line uncommented.\n
    - /etc/sane.d/epson2.conf has “net autodiscovery” as its last line\n
    - My user is part of the “lp” group, which seems to be required for finding printers/scanners\n
    \n
    If I disable the firewall completely (using YaST2 firewall program), it works – the Skanlite software detects my scanner and connects to it. With the firewall enabled, however, Skanlite says SANE cannot find any scanners. I have tried allowing TCP and UDP ports 8610, 8612 (based on suggestions from [wiki.debian.org/SaneOverNetwork](https://wiki.debian.org/SaneOverNetwork)), and 631 (for CUPS) in the “public” zone, and added the “sane” service to “Allowed” services (didn’t see a “cups” service option), but Skanlite still says SANE cannot find the scanner.\n
    \n
    Is there a way for “net autodiscovery” to work without completely disabling my firewall? What ports/services should I allow? It seems the alternative is to manually specify the printer’s IP address in /etc/sane.d/epson2.conf instead of “net autodiscovery”, but I would prefer to not hardcode this.\n
    \n
    Thank you in advance for any suggestions!
    """
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 6
  +favouriteCount: 9
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1729336684 {#2445
    date: 2024-10-19 13:18:04.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#2388 …}
  +votes: Doctrine\ORM\PersistentCollection {#1916 …}
  +reports: Doctrine\ORM\PersistentCollection {#1861 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1950 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1903 …}
  +badges: Doctrine\ORM\PersistentCollection {#1364 …}
  +children: []
  -id: 33772
  -titleTs: "'firewal':1 'opensus':5 'prevent':2 'printing/scanning':3 'tumblewe':6"
  -bodyTs: "'-200':10 '/etc/sane.d/dll.conf':15 '/etc/sane.d/epson2.conf':21,161 '/saneovernetwork](https://wiki.debian.org/saneovernetwork)),':95 '631':97 '8610':87 '8612':88 'ad':105 'address':159 'advanc':177 'allow':82,110,146 'altern':150 'autodiscoveri':24,134,165 'base':89 'cannot':75,124 'complet':50,138 'connect':64 'cup':99,116 'detect':60 'didn':112 'disabl':47,139 'enabl':70 'epson':8 'epson2':18 'find':43,76,125 'firewal':49,53,69,141 'group':36 'hardcod':172 'hello':1 'howev':71 'instead':162 'ip':158 'last':27 'line':19,28 'lp':35 'm':3 'manual':153 'net':23,133,164 'opensus':13 'option':118 'part':32 'port':86 'ports/services':143 'prefer':169 'printer':156 'printer/scanner':11 'printers/scanners':44 'program':54 'public':102 'requir':41 'sane':74,107,123 'say':73,122 'scanner':62,78,127 'see':114 'seem':38,148 'servic':108,111,117 'skanlit':58,72,120 'softwar':59 'specifi':154 'still':121 'suggest':91,180 'tcp':83 'thank':174 'tri':4,81 'tumblwe':14 'udp':85 'uncom':20 'use':6,51 'user':30 'way':131 'wiki.debian.org':94 'wiki.debian.org/saneovernetwork](https://wiki.debian.org/saneovernetwork)),':93 'without':137 'work':56,136 'would':168 'xp':9 'yast2':52 'zone':103"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1706556984
  +visibility: "visible             "
  +apId: "https://lemmy.world/post/11317523"
  +editedAt: DateTimeImmutable @1729316039 {#102
    date: 2024-10-19 07:33:59.0 +02:00
  }
  +createdAt: DateTimeImmutable @1706509984 {#2390
    date: 2024-01-29 07:33:04.0 +01:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"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\Entry {#1790
  +user: Proxies\__CG__\App\Entity\User {#1913 …}
  +magazine: App\Entity\Magazine {#316
    +icon: Proxies\__CG__\App\Entity\Image {#297 …}
    +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: 1399
    +entryCommentCount: 28492
    +postCount: 6
    +postCommentCount: 213
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      date: 2024-10-19 16:02:57.0 +02:00
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    +ownershipRequests: Doctrine\ORM\PersistentCollection {#284 …}
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    +bans: Doctrine\ORM\PersistentCollection {#168 …}
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    +badges: Doctrine\ORM\PersistentCollection {#132 …}
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    +awards: Doctrine\ORM\PersistentCollection {#111 …}
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    +apPreferredUsername: "linux"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729346819 {#320
      date: 2024-10-19 14:06:59.208884 UTC (+00:00)
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    +apDeletedAt: null
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    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1698929468 {#319
      date: 2023-11-02 13:51:08.0 +01:00
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  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#1837 …}
  +slug: "Firewall-preventing-Printing-Scanning-on-OpenSUSE-Tumbleweed"
  +title: "Firewall preventing Printing/Scanning on OpenSUSE Tumbleweed"
  +url: null
  +body: """
    Hello, I’m trying to use my Epson XP-200 printer/scanner with OpenSUSE Tumblweed.\n
    \n
    - /etc/sane.d/dll.conf has the “epson2” line uncommented.\n
    - /etc/sane.d/epson2.conf has “net autodiscovery” as its last line\n
    - My user is part of the “lp” group, which seems to be required for finding printers/scanners\n
    \n
    If I disable the firewall completely (using YaST2 firewall program), it works – the Skanlite software detects my scanner and connects to it. With the firewall enabled, however, Skanlite says SANE cannot find any scanners. I have tried allowing TCP and UDP ports 8610, 8612 (based on suggestions from [wiki.debian.org/SaneOverNetwork](https://wiki.debian.org/SaneOverNetwork)), and 631 (for CUPS) in the “public” zone, and added the “sane” service to “Allowed” services (didn’t see a “cups” service option), but Skanlite still says SANE cannot find the scanner.\n
    \n
    Is there a way for “net autodiscovery” to work without completely disabling my firewall? What ports/services should I allow? It seems the alternative is to manually specify the printer’s IP address in /etc/sane.d/epson2.conf instead of “net autodiscovery”, but I would prefer to not hardcode this.\n
    \n
    Thank you in advance for any suggestions!
    """
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 6
  +favouriteCount: 9
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1729336684 {#2445
    date: 2024-10-19 13:18:04.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#2388 …}
  +votes: Doctrine\ORM\PersistentCollection {#1916 …}
  +reports: Doctrine\ORM\PersistentCollection {#1861 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1950 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1903 …}
  +badges: Doctrine\ORM\PersistentCollection {#1364 …}
  +children: []
  -id: 33772
  -titleTs: "'firewal':1 'opensus':5 'prevent':2 'printing/scanning':3 'tumblewe':6"
  -bodyTs: "'-200':10 '/etc/sane.d/dll.conf':15 '/etc/sane.d/epson2.conf':21,161 '/saneovernetwork](https://wiki.debian.org/saneovernetwork)),':95 '631':97 '8610':87 '8612':88 'ad':105 'address':159 'advanc':177 'allow':82,110,146 'altern':150 'autodiscoveri':24,134,165 'base':89 'cannot':75,124 'complet':50,138 'connect':64 'cup':99,116 'detect':60 'didn':112 'disabl':47,139 'enabl':70 'epson':8 'epson2':18 'find':43,76,125 'firewal':49,53,69,141 'group':36 'hardcod':172 'hello':1 'howev':71 'instead':162 'ip':158 'last':27 'line':19,28 'lp':35 'm':3 'manual':153 'net':23,133,164 'opensus':13 'option':118 'part':32 'port':86 'ports/services':143 'prefer':169 'printer':156 'printer/scanner':11 'printers/scanners':44 'program':54 'public':102 'requir':41 'sane':74,107,123 'say':73,122 'scanner':62,78,127 'see':114 'seem':38,148 'servic':108,111,117 'skanlit':58,72,120 'softwar':59 'specifi':154 'still':121 'suggest':91,180 'tcp':83 'thank':174 'tri':4,81 'tumblwe':14 'udp':85 'uncom':20 'use':6,51 'user':30 'way':131 'wiki.debian.org':94 'wiki.debian.org/saneovernetwork](https://wiki.debian.org/saneovernetwork)),':93 'without':137 'work':56,136 'would':168 'xp':9 'yast2':52 'zone':103"
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  +downVotes: 0
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  +visibility: "visible             "
  +apId: "https://lemmy.world/post/11317523"
  +editedAt: DateTimeImmutable @1729316039 {#102
    date: 2024-10-19 07:33:59.0 +02:00
  }
  +createdAt: DateTimeImmutable @1706509984 {#2390
    date: 2024-01-29 07:33:04.0 +01:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"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\Entry {#1790
  +user: Proxies\__CG__\App\Entity\User {#1913 …}
  +magazine: App\Entity\Magazine {#316
    +icon: Proxies\__CG__\App\Entity\Image {#297 …}
    +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: 1399
    +entryCommentCount: 28492
    +postCount: 6
    +postCommentCount: 213
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    +lastActive: DateTime @1729346577 {#326
      date: 2024-10-19 16:02:57.0 +02:00
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    Hello, I’m trying to use my Epson XP-200 printer/scanner with OpenSUSE Tumblweed.\n
    \n
    - /etc/sane.d/dll.conf has the “epson2” line uncommented.\n
    - /etc/sane.d/epson2.conf has “net autodiscovery” as its last line\n
    - My user is part of the “lp” group, which seems to be required for finding printers/scanners\n
    \n
    If I disable the firewall completely (using YaST2 firewall program), it works – the Skanlite software detects my scanner and connects to it. With the firewall enabled, however, Skanlite says SANE cannot find any scanners. I have tried allowing TCP and UDP ports 8610, 8612 (based on suggestions from [wiki.debian.org/SaneOverNetwork](https://wiki.debian.org/SaneOverNetwork)), and 631 (for CUPS) in the “public” zone, and added the “sane” service to “Allowed” services (didn’t see a “cups” service option), but Skanlite still says SANE cannot find the scanner.\n
    \n
    Is there a way for “net autodiscovery” to work without completely disabling my firewall? What ports/services should I allow? It seems the alternative is to manually specify the printer’s IP address in /etc/sane.d/epson2.conf instead of “net autodiscovery”, but I would prefer to not hardcode this.\n
    \n
    Thank you in advance for any suggestions!
    """
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App\Entity\Magazine {#316
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  +name: "linux@lemmy.ml"
  +title: "linux"
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    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/)
    """
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