# # /etc/sysctl.conf - Configuration file for setting system variables # See /etc/sysctl.d/ for additional system variables. # See sysctl.conf (5) for information. #
#kernel.domainname = example.com # Uncomment the following to stop low-level messages on console #kernel.printk = 3 4 1 3 ##############################################################3 # Functions previously found in netbase # # Uncomment the next two lines to enable Spoof protection (reverse-path filter) # Turn on Source Address Verification in all interfaces to # prevent some spoofing attacks #net.ipv4.conf.default.rp_filter=1 #net.ipv4.conf.all.rp_filter=1 # Uncomment the next line to enable TCP/IP SYN cookies # See http://lwn.net/Articles/277146/ # Note: This may impact IPv6 TCP sessions too #net.ipv4.tcp_syncookies=1 # Uncomment the next line to enable packet forwarding for IPv4 #net.ipv4.ip_forward=1 # Uncomment the next line to enable packet forwarding for IPv6 # Enabling this option disables Stateless Address Autoconfiguration # based on Router Advertisements for this host #net.ipv6.conf.all.forwarding=1 ################################################################### # Additional settings - these settings can improve the network # security of the host and prevent against some network attacks # including spoofing attacks and man in the middle attacks through # redirection. Some network environments, however, require that these # settings are disabled so review and enable them as needed. # # Do not accept ICMP redirects (prevent MITM attacks) #net.ipv4.conf.all.accept_redirects = 0 #net.ipv6.conf.all.accept_redirects = 0 # _or_ # Accept ICMP redirects only for gateways listed in our default # gateway list (enabled by default) # net.ipv4.conf.all.secure_redirects = 1 # # Do not send ICMP redirects (we are not a router) #net.ipv4.conf.all.send_redirects = 0 # # Do not accept IP source route packets (we are not a router) #net.ipv4.conf.all.accept_source_route = 0 #net.ipv6.conf.all.accept_source_route = 0 # # Log Martian Packets #net.ipv4.conf.all.log_martians = 1 # net.core.wmem_max=24862979 net.core.rmem_max=806648177 What du you think about? From: USRP-users [mailto:usrp-users-boun...@lists.ettus.com] On Behalf Of Marcus D. Leech via USRP-users Sent: giovedì 9 maggio 2019 16:00 To: usrp-users@lists.ettus.com Subject: [EXT] Re: [USRP-users] Configuration in sysctl.conf On 05/09/2019 08:25 AM, Disco Daniele via USRP-users wrote: Hi! I'm using a X310 on a linux box UBUNTU 18.04 Executing the command "uhd_usrp_probe" I obtain a lot of [WARNING][UDP] related to the dimension of the send buffer Then there is the sentence: Please run: sudo sysctl -w net.core.wmem_max=24862979 So I've written in the file /etc/sysctl.conf, at the end net.core.wmem_max=24862979 I restarted the host but rerunning uhd_usrp_probe I reobtain the same warning. Could you help me? PS: Now I'm using a 10GB Ethernet board plugged in the workstation, using a couple of fiber optics between the X310 and the work station Thank you Perhaps you have a syntax error in your sysctl file? _____________________________________________ [logo1] Direzione e Coordinamento Vivendi SA Daniele Disco CT.TA.EI Via Reiss Romoli, 274 - 10148 Torino tel . +39 011 228 7271 cell. +39 331 600 1113 Fax. +39 06 4186 5196 Tim Official: Facebook<https://www.facebook.com/TimOfficialPage> - Twitter<https://twitter.com/tim_official> www.tim.it<http://www.tim.it/> Questo messaggio e i suoi allegati sono indirizzati esclusivamente alle persone indicate. La diffusione, copia o qualsiasi altra azione derivante dalla conoscenza di queste informazioni sono rigorosamente vietate. Qualora abbiate ricevuto questo documento per errore siete cortesemente pregati di darne immediata comunicazione al mittente e di provvedere alla sua distruzione, Grazie. This e-mail and any attachments is confidential and may contain privileged information intended for the addressee(s) only. Dissemination, copying, printing or use by anybody else is unauthorised. If you are not the intended recipient, please delete this message and any attachments and advise the sender by return e-mail, Thanks. Rispetta l'ambiente. Non stampare questa mail se non è necessario. _______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com<mailto:USRP-users@lists.ettus.com> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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