DR vs Kodura Network Tools

DR-Terminal turns your iPhone and iPad into a full terminal for every host: SSH, Telnet, SFTP and SCP, a dual-pane file manager, SSH key tools and hardware security keys — servers, routers, switches, embedded boards and Raspberry Pi in a single app. The same app runs on Windows, macOS and Linux. KEY FEATURES: Terminal • Own terminal engine: true color, Unicode and full-screen TUI apps — htop, vim, tmux and mc render as they should • DevOps Keyboard — split terminal keyboard with arrows, modifiers, shortcuts and snippet tiles, adjustable size and opacity • Output highlighting — colorize logs and command output with custom rules • Multiple concurrent sessions with keep-alive in the background • Command history and autocomplete Connections • SSH with password, key, keyboard-interactive and hardware security key authentication • Post-quantum key exchange (sntrup761x25519, mlkem768x25519) • Jump Host (ProxyJump) for multi-hop connections • Quick Connect without saving credentials; connection groups • Automatic server discovery on your local network (Bonjour/mDNS) • Classic Telnet client for network gear and embedded systems Files — SFTP, SCP and the Commander • SCP for hosts without SFTP: OpenWrt, Dropbear and BusyBox routers — Auto picks the transport per host, or pin SFTP or SCP per connection • Dual-pane Commander: local and remote panels side by side; copy, move and delete between any two locations with one tap — server to server too • Open ZIP, TAR and ISO archives in place, even on remote servers, without downloading • Built-in viewer for text, Markdown, images and PDF; copy an image straight to the clipboard • Bookmarks and a default directory per connection • File sharing — send files from other apps straight to a server, over SFTP or SCP Snippets • Parameterized command snippets with typed fields and a live command preview • Built-in catalog of 120+ DevOps commands: packages, services, Docker, network, storage and ZFS • System-aware variants — the detected host OS picks the right tool (apt, dnf, pacman, zypper, brew, pkg, apk) Host Insight • Detected OS, CPU and hardware plus live load, memory, swap and disk gauges in the session sidebar Keys and Security • SSH key generation (Ed25519, ECDSA, RSA) — also directly on a YubiKey over NFC or USB-C • SSH key converter — OpenSSH, PEM, PuTTY PPK, PKCS#1/PKCS#8, DER • FIDO2/YubiKey security keys (Ed25519-SK, ECDSA-SK) over NFC and USB-C • One-tap migration from password to key-based authentication • Host key verification with fingerprint display and trusted hosts management • Encrypted credential storage (iOS Keychain) — no credentials in plaintext • Encrypted configuration backup and restore Customization • Dark, Light, and System theme; 435 terminal color themes; per-connection theme and font size • Built-in documentation in 33 languages PRO (In-App Purchase): • Removes the ads and the welcome screen at launch — every feature above is free, with no connection limits Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Basic network troubleshooting, all in one place. Ping, traceroute, DNS lookups, port checks and path MTU discovery — the five things you reach for when something is wrong, without five separate apps and five separate subscriptions. NO ADS. NOTHING TO BUY. No banners, no upgrade prompts, no account, no subscription. Every tool is there the moment you open it. ONE TARGET, EVERY TOOL Type a host once and it carries across all five. A real diagnosis moves between them — ping gets nothing back, so you trace the path; the trace stops at hop nine, so you check whether DNS gave you the right address; then you see whether the port is even open. Retyping the hostname at every step is the friction that sends people back to a laptop. RESULTS THAT EXPLAIN THEMSELVES Most tools hand you a column of numbers and leave the interpretation to you. This one tells you what it means: • A hop showing * is usually a router configured not to reply, not a break in the path. If later hops answered, your traffic went straight through. • A host that ignores ping may be perfectly healthy. Plenty of servers and firewalls drop ICMP deliberately, so silence is not proof of anything. • Jitter is judged against the latency it varies around. Thirty milliseconds of variation is fine on a satellite link and terrible on a local one. • A port that refuses a connection is telling you something. A port that stays silent is what a firewall looks like — and those are different problems. PING Loss, round-trip time, and jitter, with the distribution drawn so you can see the shape of the variation rather than reading it out of a list. TRACEROUTE Every hop with its round-trip times and reverse DNS name, and a clear statement of where the path actually ended — as opposed to where a router simply declined to introduce itself. DNS LOOKUP A, AAAA, CNAME, MX, TXT, NS, SOA and PTR, against a resolver you choose — Cloudflare, Google, Quad9 or OpenDNS — rather than whichever one your device happens to be using. Asking two resolvers the same question and getting different answers is often the whole diagnosis. "No such name" and "the server failed" are reported as the different problems they are. PORT CHECK Common services by name, or any ports you type. Refused and silent are reported separately, and anything open that usually should not be — databases, remote desktop, SMB — is called out. PATH MTU The largest packet that survives the whole path, found by probing with the don't-fragment bit set. Worth knowing because an MTU mismatch produces the strangest fault in networking: small requests work and large ones hang. SSH connects then freezes on long output, a page loads but one image never finishes, a tunnelled connection is fine until somebody sends an attachment. It looks like an application problem, and the application is fine. Built by Kodura for network engineers, sysadmins and anyone who has been handed a laptop and asked why the internet is slow.