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Networking & Security

Having problems getting connected to the internet or running a server? Wondering about securing your box? Ask here.
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  • Announcements
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  • Gentoo Linux Security Team
    Last post by desultory « Thu Mar 20, 2014 3:55 am
    Replies: 3
    by Koon » Tue Nov 16, 2004 12:52 pm
    3 Replies
    242270 Views
    Last post by desultory
    Thu Mar 20, 2014 3:55 am
  • Topics
    Replies
    Views
    Last post
  • Virtual mail server dovecot 2.4.x
    Last post by pingtoo « Tue Jun 09, 2026 7:55 pm
    Replies: 2
    by jankom » Tue May 26, 2026 8:41 pm
    2 Replies
    2157 Views
    Last post by pingtoo
    Tue Jun 09, 2026 7:55 pm
  • [SOLVED] NFS client only sends 16 GIDs to server
    Last post by NathanZachary « Mon Jun 08, 2026 4:21 pm
    Replies: 2
    by M95D » Sat Jun 06, 2026 8:29 pm
    2 Replies
    453 Views
    Last post by NathanZachary
    Mon Jun 08, 2026 4:21 pm
  • dnsmasq host requires frequent client dhcpcd restart
    Last post by OldTango « Sun Jun 07, 2026 7:14 pm
    Replies: 8
    by dartleader » Mon May 25, 2026 3:23 pm
    8 Replies
    3677 Views
    Last post by OldTango
    Sun Jun 07, 2026 7:14 pm
  • Advice
    Last post by NathanZachary « Fri Jun 05, 2026 6:48 pm
    Replies: 19
    by leyvi » Tue Jun 02, 2026 8:04 pm
    19 Replies
    2468 Views
    Last post by NathanZachary
    Fri Jun 05, 2026 6:48 pm
  • [SOLVED] No clear error indication on dhcp timeout during boot
    Last post by arcctgx « Thu Jun 04, 2026 11:30 pm
    Replies: 6
    by arcctgx » Wed Jun 03, 2026 3:39 pm
    6 Replies
    1471 Views
    Last post by arcctgx
    Thu Jun 04, 2026 11:30 pm
  • Restricted procfs
    Last post by NathanZachary « Wed Jun 03, 2026 1:19 am
    Replies: 1
    by leyvi » Tue Jun 02, 2026 6:07 pm
    1 Replies
    1324 Views
    Last post by NathanZachary
    Wed Jun 03, 2026 1:19 am
  • LSMs for Lazy People
    Last post by sam_ « Tue Jun 02, 2026 6:19 pm
    Replies: 3
    by leyvi » Tue Jun 02, 2026 5:52 pm
    3 Replies
    1479 Views
    Last post by sam_
    Tue Jun 02, 2026 6:19 pm
  • apache sometimes ignores AddHandler and Action *solved*
    Last post by Banana « Thu May 21, 2026 6:23 am
    Replies: 7
    by robvr » Sun May 17, 2026 4:53 pm
    7 Replies
    1431 Views
    Last post by Banana
    Thu May 21, 2026 6:23 am
  • DNSmasq failed update
    Last post by sam_ « Tue May 19, 2026 11:06 pm
    Replies: 2
    by RayOfLight » Sun May 17, 2026 4:17 pm
    2 Replies
    1062 Views
    Last post by sam_
    Tue May 19, 2026 11:06 pm
  • Attempting to password lock grub, password_pbkdf2 command not found [SOLVED]
    Last post by ThatGingerGuy98 « Sun May 17, 2026 1:56 pm
    Replies: 7
    by ThatGingerGuy98 » Wed May 13, 2026 3:14 pm
    7 Replies
    2743 Views
    Last post by ThatGingerGuy98
    Sun May 17, 2026 1:56 pm
  • Help with EFI Variables
    Last post by leyvi « Thu May 14, 2026 8:58 am
    Replies: 5
    by leyvi » Tue Apr 28, 2026 6:31 pm
    5 Replies
    4517 Views
    Last post by leyvi
    Thu May 14, 2026 8:58 am
  • nftables not starting with libvirt
    Last post by Princess Nell « Wed May 13, 2026 9:01 pm
    Replies: 6
    by Princess Nell » Mon May 04, 2026 11:06 pm
    6 Replies
    4841 Views
    Last post by Princess Nell
    Wed May 13, 2026 9:01 pm
  • [SOLVED] dhcpcd: no valid interfaces found
    Last post by pietinger « Tue May 12, 2026 12:56 pm
    Replies: 4
    by ermor » Mon May 11, 2026 7:57 pm
    4 Replies
    3479 Views
    Last post by pietinger
    Tue May 12, 2026 12:56 pm
  • Dovecot 2.3->2.4: No IMAP NOTIFY [SOLVED]
    Last post by pa4wdh « Mon May 11, 2026 1:01 pm
    Replies: 1
    by pa4wdh » Thu May 07, 2026 2:58 pm
    1 Replies
    4069 Views
    Last post by pa4wdh
    Mon May 11, 2026 1:01 pm
  • When should I use hostname and when hostname.domain in my home network?
    Last post by pingtoo « Sun May 10, 2026 7:35 pm
    Replies: 3
    by lekto » Sun May 10, 2026 3:05 pm
    3 Replies
    2944 Views
    Last post by pingtoo
    Sun May 10, 2026 7:35 pm
  • how to work around firefox bug
    Last post by g2user2024 « Thu May 07, 2026 11:49 pm
    Replies: 3
    by g2user2024 » Tue May 05, 2026 10:50 pm
    3 Replies
    4402 Views
    Last post by g2user2024
    Thu May 07, 2026 11:49 pm
  • How to correctly block module loading under OpenRC?
    Last post by sublogic « Wed May 06, 2026 12:12 am
    Replies: 1
    by Duncan Mac Leod » Tue May 05, 2026 10:34 pm
    1 Replies
    2967 Views
    Last post by sublogic
    Wed May 06, 2026 12:12 am
  • TPM 1.2 unable to store luks-key
    Last post by klz « Tue May 05, 2026 8:04 pm
    by klz » Tue May 05, 2026 8:04 pm
    0 Replies
    5465 Views
    Last post by klz
    Tue May 05, 2026 8:04 pm
  • Dovecot update 2.3 to 2.4 notes [SOLVED]
    Last post by jankom « Tue May 05, 2026 7:29 pm
    Replies: 3
    by jankom » Mon May 04, 2026 4:03 pm
    3 Replies
    3164 Views
    Last post by jankom
    Tue May 05, 2026 7:29 pm
  • Current stable MySQL 8.0.44 is EOL
    Last post by Parona « Mon May 04, 2026 12:30 pm
    Replies: 1
    by jhon987 » Mon May 04, 2026 6:08 am
    1 Replies
    2862 Views
    Last post by Parona
    Mon May 04, 2026 12:30 pm
  • mDNS stops working when I turn on one specific machine
    Last post by lekto « Wed Apr 29, 2026 12:54 pm
    by lekto » Wed Apr 29, 2026 12:54 pm
    0 Replies
    5854 Views
    Last post by lekto
    Wed Apr 29, 2026 12:54 pm
  • Dovecot 2.4 authentication - [SOLVED]
    Last post by jankom « Sun Apr 26, 2026 11:00 pm
    Replies: 27
    by jankom » Tue Apr 21, 2026 11:05 pm
    • 1
    • 2
    27 Replies
    8277 Views
    Last post by jankom
    Sun Apr 26, 2026 11:00 pm
  • [SOLVED] NetworkManager: bind wire with wireless
    Last post by lekto « Sun Apr 26, 2026 6:03 am
    Replies: 1
    by lekto » Sat Apr 25, 2026 8:21 am
    1 Replies
    3760 Views
    Last post by lekto
    Sun Apr 26, 2026 6:03 am
  • Virtual mail server authentication [CLOSED]
    Last post by jankom « Tue Apr 21, 2026 10:53 pm
    Replies: 6
    by jankom » Mon Apr 13, 2026 2:54 am
    6 Replies
    6044 Views
    Last post by jankom
    Tue Apr 21, 2026 10:53 pm
  • iproute2 / rt_tables missing - does not exist
    Last post by salahx « Sun Apr 19, 2026 11:20 pm
    Replies: 7
    by lostinspace2011 » Fri Feb 13, 2026 12:37 am
    7 Replies
    16010 Views
    Last post by salahx
    Sun Apr 19, 2026 11:20 pm
  • Has anyone set up openconnect with SSO?
    Last post by freifunk_connewitz « Tue Apr 14, 2026 9:18 am
    Replies: 3
    by jrittenh » Tue Apr 16, 2024 1:09 am
    3 Replies
    15825 Views
    Last post by freifunk_connewitz
    Tue Apr 14, 2026 9:18 am
  • List/search portage tree via WiFi on NFS extreemly slow
    Last post by C5ace « Sat Apr 11, 2026 1:26 am
    by C5ace » Sat Apr 11, 2026 1:26 am
    0 Replies
    8187 Views
    Last post by C5ace
    Sat Apr 11, 2026 1:26 am
  • ss outputs "RTNETLINK answers: Invalid argument"
    Last post by floppymaster « Thu Apr 09, 2026 7:46 pm
    Replies: 8
    by ipic » Tue Aug 26, 2025 2:51 pm
    8 Replies
    8288 Views
    Last post by floppymaster
    Thu Apr 09, 2026 7:46 pm
  • /etc/postfix/pgsql/ files discrepancy [SOLVED]
    Last post by jankom « Tue Mar 31, 2026 3:45 pm
    Replies: 42
    by jankom » Tue Mar 17, 2026 10:48 pm
    • 1
    • 2
    42 Replies
    14950 Views
    Last post by jankom
    Tue Mar 31, 2026 3:45 pm
  • Autologin with pam_pkcs if card is present?
    Last post by shimbob « Tue Mar 31, 2026 3:04 am
    by shimbob » Tue Mar 31, 2026 3:04 am
    0 Replies
    7537 Views
    Last post by shimbob
    Tue Mar 31, 2026 3:04 am
  • Getting WIFI off the ground
    Last post by jetrca « Fri Mar 27, 2026 10:15 pm
    Replies: 3
    by jetrca » Fri Mar 27, 2026 12:29 pm
    3 Replies
    4760 Views
    Last post by jetrca
    Fri Mar 27, 2026 10:15 pm
  • dovecot 2.4.2 connecting to Database [CLOSED]
    Last post by jankom « Fri Mar 27, 2026 11:41 am
    Replies: 1
    by jankom » Sat Mar 21, 2026 10:48 pm
    1 Replies
    5901 Views
    Last post by jankom
    Fri Mar 27, 2026 11:41 am
  • Kernel 6.18.18 broke virt-manager
    Last post by pietinger « Fri Mar 27, 2026 11:07 am
    Replies: 1
    by sdz » Fri Mar 27, 2026 2:18 am
    1 Replies
    4513 Views
    Last post by pietinger
    Fri Mar 27, 2026 11:07 am
  • davfs2 1.7.2 required for kernel geq 6.16 but not available
    Last post by jetrca « Thu Mar 26, 2026 7:09 pm
    Replies: 3
    by jetrca » Mon Mar 02, 2026 10:36 am
    3 Replies
    11866 Views
    Last post by jetrca
    Thu Mar 26, 2026 7:09 pm
  • PQC and Future Secure Logins
    Last post by alienjon « Thu Mar 26, 2026 2:41 am
    Replies: 2
    by alienjon » Thu Mar 26, 2026 12:16 am
    2 Replies
    4723 Views
    Last post by alienjon
    Thu Mar 26, 2026 2:41 am
  • Struggling to setup wireguard with netifrc.
    Last post by Borsch « Wed Mar 25, 2026 12:06 pm
    Replies: 5
    by Borsch » Mon Mar 23, 2026 3:47 pm
    5 Replies
    5307 Views
    Last post by Borsch
    Wed Mar 25, 2026 12:06 pm
  • Advice for migrating from IPTABLES to NFTABLES
    Last post by rab0171610 « Tue Mar 24, 2026 12:03 pm
    Replies: 15
    by rab0171610 » Mon Mar 23, 2026 4:32 am
    15 Replies
    7888 Views
    Last post by rab0171610
    Tue Mar 24, 2026 12:03 pm
  • dovecot 2.4 from 2.3 problems - CLOSED
    Last post by jankom « Mon Mar 23, 2026 9:29 pm
    Replies: 133
    by jankom » Sat Jan 31, 2026 2:46 pm
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    133 Replies
    279662 Views
    Last post by jankom
    Mon Mar 23, 2026 9:29 pm
  • When "Predictable" Network Interface Names Aren't
    Last post by mwoodiupui « Fri Mar 20, 2026 2:48 pm
    Replies: 33
    by John R. Graham » Tue Jun 03, 2025 4:35 pm
    • 1
    • 2
    33 Replies
    42710 Views
    Last post by mwoodiupui
    Fri Mar 20, 2026 2:48 pm
  • [SOLVED] windows laptop fails to acknowledge DHCPOFFER
    Last post by o5gmmob8 « Wed Mar 18, 2026 5:11 pm
    Replies: 7
    by o5gmmob8 » Mon Feb 23, 2026 5:04 pm
    7 Replies
    16350 Views
    Last post by o5gmmob8
    Wed Mar 18, 2026 5:11 pm
  • failing nic symptoms
    Last post by o5gmmob8 « Wed Mar 18, 2026 1:32 pm
    Replies: 16
    by o5gmmob8 » Wed Dec 17, 2025 9:28 am
    16 Replies
    21937 Views
    Last post by o5gmmob8
    Wed Mar 18, 2026 1:32 pm
  • OpenVPN with a br0 and tun0 interface assistance needed
    Last post by mondjef « Wed Mar 18, 2026 11:13 am
    Replies: 13
    by mondjef » Sun Mar 08, 2026 6:42 pm
    13 Replies
    26199 Views
    Last post by mondjef
    Wed Mar 18, 2026 11:13 am
  • funny firewall behavior
    Last post by freke « Tue Mar 17, 2026 4:27 pm
    Replies: 8
    by leyvi » Fri Mar 13, 2026 7:48 am
    8 Replies
    11912 Views
    Last post by freke
    Tue Mar 17, 2026 4:27 pm
  • Dovecot 2.4 and getmail [SOLVED]
    Last post by pa4wdh « Sat Mar 14, 2026 12:29 pm
    Replies: 4
    by pa4wdh » Fri Mar 13, 2026 7:08 pm
    4 Replies
    11850 Views
    Last post by pa4wdh
    Sat Mar 14, 2026 12:29 pm
  • [seems SOLVED] NFS v4 on tmpfs gives 'stale file handle'
    Last post by widlokm « Tue Mar 10, 2026 3:01 pm
    Replies: 19
    by widlokm » Wed Feb 25, 2026 2:44 pm
    19 Replies
    51873 Views
    Last post by widlokm
    Tue Mar 10, 2026 3:01 pm
  • kernel hw cypto in openssl / others
    Last post by jlm « Sun Mar 08, 2026 9:44 am
    Replies: 4
    by jlm » Sat Feb 28, 2026 6:34 pm
    4 Replies
    13635 Views
    Last post by jlm
    Sun Mar 08, 2026 9:44 am
  • Everything wants access to the "default keyring"
    Last post by Banana « Sun Mar 08, 2026 9:05 am
    Replies: 3
    by ExecutorElassus » Sat Mar 07, 2026 10:36 am
    3 Replies
    12196 Views
    Last post by Banana
    Sun Mar 08, 2026 9:05 am
  • [SOLVED] IPTABLES rules failed
    Last post by smokyrun « Sat Mar 07, 2026 6:00 pm
    Replies: 5
    by smokyrun » Wed Mar 04, 2026 4:55 am
    5 Replies
    17000 Views
    Last post by smokyrun
    Sat Mar 07, 2026 6:00 pm
  • WiFi not working after fresh install.
    Last post by Borsch « Thu Mar 05, 2026 6:40 pm
    Replies: 21
    by Borsch » Tue Mar 03, 2026 1:06 pm
    21 Replies
    34186 Views
    Last post by Borsch
    Thu Mar 05, 2026 6:40 pm
  • distcc with slightly different gcc versions
    Last post by eccerr0r « Tue Mar 03, 2026 4:46 pm
    Replies: 1
    by Nomistic » Tue Mar 03, 2026 9:53 am
    1 Replies
    10699 Views
    Last post by eccerr0r
    Tue Mar 03, 2026 4:46 pm
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