OpenBSD Handbook

    Theme
    • Part I. Install & Configure
      • Introduction to OpenBSD
      • Installing OpenBSD
      • The X Window System
      • Networking on OpenBSD
      • System Configuration
      • OpenBSD Basics
      • Managing Software: Packages and Ports
    • Part II. Daily Operations
      • OpenBSD Desktop Environments
      • Multimedia
      • Printing
      • Linux Compatibility
      • Windows Compatibility
      • Games
    • Part III. System Administration
      • Virtualization
      • Storage and File Systems
      • Updating and Upgrading
      • Localization
      • The OpenBSD Boot Process
      • Security
    • Part IV. Networking & Daemons
      • Services
        • Database
          • MariaDB
          • PostgreSQL
          • Redis
          • memcached
        • Directory
          • YP (NIS)
          • LDAP
        • File
          • NFS
          • Samba
        • FTP Services
          • ftpd
          • ProFTPD
          • vsftpd
          • Pure-FTPd
          • TFTP
        • Mail
          • OpenSMTPD Mail Server
          • Dovecot IMAP and POP3 Server
          • Postfix
          • Exim
          • Rspamd
        • Name
          • Unbound DNS Resolver
          • NSD Authoritative DNS Server
          • BIND DNS Server
        • Networking
          • OpenBGPD
          • rad
          • DHCP on OpenBSD
          • slaacd
        • Web
          • Apache HTTP Server
          • nginx Web Server
          • OpenBSD httpd Web Server
          • relayd Reverse Proxy
        • Logging
          • syslogd
        • Monitoring
          • SNMP
        • Remote Access
          • Audit OpenSSH
          • OpenSSH Server
        • File Synchronization
          • rsync
        • Messaging
          • RabbitMQ Message Broker
        • Time
          • NTP Time Synchronization
      • PF
        • pfctl cheat sheet
        • PF Anchors
        • PF Filter Rules
        • PF Forwarding
        • PF Lists and Macros
        • PF Load Balancing
        • PF Logging
        • PF NAT
        • PF Options
        • PF Policies
        • PF Shortcuts
        • PF Tables
      • Advanced Networking
        • High Availability and State Replication
        • Multi-WAN and Policy-Based Routing
        • VPN and Cryptographic Tunneling
        • Classic and Lightweight Tunnels
        • IPv6 at Scale
        • QoS and Traffic Shaping
        • MPLS and Label Distribution
        • Network Services at Scale
        • Virtualization and Host Networking
        • Large-Scale L2 and L3 Design
        • Telemetry, Logging, and Flow Export
        • Hardening and Operational Safety
        • Reference Architectures
        • Troubleshooting Playbooks
      • Serial Communication
    • Part V. Miscellaneous
      • Virtualization Cheat Sheet
      • OpenBSD Cheatsheet
      • How-to Guides
        • Complete the First 30 Minutes After Installation
        • Check Hardware Compatibility Before Installing
        • Bootstrap Wi-Fi Firmware Without Ethernet
        • Set Up OpenBSD as a Laptop or Workstation
        • Configure Laptop Power Management
        • Run OpenBSD as a Virtual Machine Guest
        • Install OpenBSD on a VPS or Cloud Server
        • Install OpenBSD with Full-Disk Encryption
        • Troubleshoot Web Browsers on OpenBSD
        • Create an Administrator Account with doas and SSH Keys
        • Establish a Conservative Security Baseline
        • Manage OpenBSD with Ansible
        • Recover Access and Reset the Root Password
        • Collect OpenBSD Diagnostic Evidence
        • Configure Secure Remote Access with OpenSSH
        • Set Up WordPress on OpenBSD
        • Build Third-Party Software from Ports
        • Use FIDO Security Keys with OpenSSH
        • Build OpenBSD from Source
        • Configure Wi-Fi Roaming and Wired Failover
        • Dual-Boot OpenBSD on a UEFI System
        • Troubleshoot PF, NAT, and Routing
        • Automate OpenBSD Installation with Autoinstall and PXE
        • Route Multiple VLANs with PF
        • Configure a Road-Warrior WireGuard VPN
        • Troubleshoot Package Installation and Update Failures
        • Route IPv6 Networks without NAT
        • Schedule Recurring Maintenance
        • Plan a Docker Workload Migration to OpenBSD
        • Build a Mail Server with OpenSMTPD, Dovecot, and Rspamd
        • Build a Simple Router and Firewall
        • Monitor an OpenBSD System
        • Back Up and Restore an OpenBSD System
        • Configure softraid RAID1
        • Recover an OpenBSD System That Does Not Boot
        • Install Z shell (zsh)
      • OpenBSD for Linux Users
      • OpenBSD for FreeBSD Users
      • OpenBSD for macOS Users
    • OpenBSD FAQ
    • OpenBSD Architectures
      • OpenBSD Package Search

        netsed-0.01cp1

        Package search / Categories / OpenBSD 8.0 release
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        OpenBSD branch
        OpenBSD 8.0 releaseCurrent snapshot

        OpenBSD 8.0 release ยท amd64

        network sed

        Project homepage: http://lcamtuf.coredump.cx/

        Description

        netsed is a small utility designed to allow you to alter the contents of packets forwarded through your network in real time. It is really useful for network hackers in the following applications: * black-box protocol auditing - whenever there are two or more proprietary boxes communicating over an undocumented protocol (by enforcing changes in ongoing transmissions, you will be able to test whether the tested application is secure) * fuzz-alike experiments, integrity tests - whenever you want to test the stability of an application and see how it ensures data integrity * other common applications - fooling other people, content filtering, etc. -- choose whatever you want to It fits well with the ngrep, netcat and tcpdump tool suites.

        Package information

        Ports path
        net/netsed
        Package architecture
        amd64
        Maintainer
        The OpenBSD ports mailing-list <ports@openbsd.org>
        Categories
        net
        Available flavors
        None listed

        Ports list build and test dependencies as well as runtime dependencies. pkg_add selects those needed for installation.

        Direct dependencies

        Build

        • devel/gmake

        Package guides

        • Installing and updating packages

        Package details as JSON

        Report a bug