{"id":346,"date":"2021-05-11T11:29:34","date_gmt":"2021-05-11T14:29:34","guid":{"rendered":"https:\/\/blog.galsoft.duckdns.org\/?p=346"},"modified":"2021-05-11T11:29:39","modified_gmt":"2021-05-11T14:29:39","slug":"2-comandos-para-administradores-de-redes","status":"publish","type":"post","link":"https:\/\/blog.galsoft.com.ar\/?p=346","title":{"rendered":"2 comandos para administradores de redes"},"content":{"rendered":"

UFW es un frontend para gestionar las reglas de firewall en Arch Linux, Debian y Ubuntu. Se utiliza a trav\u00e9s de la l\u00ednea de comandos y su raz\u00f3n de ser es la de simplificar la configuraci\u00f3n del firewall de Linux (como su nombre indica).<\/strong><\/p>\n

sudo ufw status Verificar estado de UFW y ver reglas <\/p>\n

sudo ufw enable \/ sudo ufw disable Activar o desactivar UFW <\/p>\n

sudo ufw allow ssh = sudo ufw allow 22 Permitir SSH <\/p>\n

sudo ufw deny ssh Bloquear SSH <\/p>\n

sudo ufw allow 9995\/udp Permitir puerto 9995 UDP <\/p>\n

sudo ufw allow from 192.168.178.254<\/a> Permitir conexiones desde 192.168.178.254<\/a> <\/p>\n

sudo ufw allow from 192.168.178.0\/24<\/a> Permitir conexiones desde 192.168.178.0\/24<\/a> <\/p>\n

sudo ufw allow from any to 192.168.178.254<\/a> port 9995 proto udp Permitir conexiones hacia 192.168.178.254<\/a> puerto 9995 UDP <\/p>\n

sudo ufw delete Borrar una regla sudo ufw logging on Activar el log<\/p>\n

<\/p>\n

Tcpdump es un analizador de paquetes que se ejecuta desde una linea de comandos<\/strong><\/p>\n

sudo tcpdump \u2013nn \u2013i ens192 No resolver direcciones IP ni puertos. Capturar tr\u00e1fico que pasa por la interfaz ens192 <\/p>\n

sudo tcpdump -nn -vv -i ens192 Verbose, muestra m\u00e1s informaci\u00f3n <\/p>\n

sudo tcpdump src 10.50.79.2<\/a> Capturar paquetes con IP de origen 10.50.79.2<\/a> <\/p>\n

sudo tcpdump dst 10.50.79.2<\/a> Capturar paquetes con IP de destino 10.50.79.2<\/a> <\/p>\n

sudo tcpdump host 10.50.79.2<\/a> Capturar paquetes con IP de origen o destino 10.50.79.2<\/a> <\/p>\n

sudo tcpdump net 10.50.79.0\/24<\/a> Capturar paquetes con red de origen o destino 10.50.79.0\/24<\/a> <\/p>\n

sudo tcpdump port 9995 Capturar paquetes con puerto de origen o destino 9995 <\/p>\n

sudo tcpdump -s0 -i ens192 \u2013w captura.pcap Guardar la captura en un archivo externo para abrirla m\u00e1s tarde con un analizador de paquetes (Por ejemplo: Wireshark)<\/p>","protected":false},"excerpt":{"rendered":"

UFW es un frontend para gestionar las reglas de firewall en Arch Linux, Debian y Ubuntu. Se utiliza a trav\u00e9s de la l\u00ednea de comandos y su raz\u00f3n de ser es la de simplificar la configuraci\u00f3n del firewall de Linux (como su nombre indica). sudo ufw status Verificar estado de UFW y ver reglas sudo […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"off","ocean_gallery_id":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-346","post","type-post","status-publish","format-standard","hentry","category-linux","entry"],"_links":{"self":[{"href":"https:\/\/blog.galsoft.com.ar\/index.php?rest_route=\/wp\/v2\/posts\/346","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.galsoft.com.ar\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.galsoft.com.ar\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.galsoft.com.ar\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.galsoft.com.ar\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=346"}],"version-history":[{"count":1,"href":"https:\/\/blog.galsoft.com.ar\/index.php?rest_route=\/wp\/v2\/posts\/346\/revisions"}],"predecessor-version":[{"id":347,"href":"https:\/\/blog.galsoft.com.ar\/index.php?rest_route=\/wp\/v2\/posts\/346\/revisions\/347"}],"wp:attachment":[{"href":"https:\/\/blog.galsoft.com.ar\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.galsoft.com.ar\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.galsoft.com.ar\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}