VLANlab
ABOUT
DevKit
11 tools
JSON FormatterYAML FormatterBase64 / URL EncodeJWT DecoderRegex TesterUnix TimestampCron BuilderUUID / ULIDPunycode / IDNBase ConverterACL Generator
VLANlab

CALCULATE • LOOKUP • VERIFY

What Is My IP?IPv6 TestSpeed Test
DNS LookupDNS PropagationDNS Health CheckerSPF AnalyzerPTR LookupCAA RecordSRV RecordDNS TraceDNS PrivacyDANE / TLSADNSSEC CheckerSPF BuilderDKIM GeneratorZone DiffPTR Zone Generator
Subnet CalculatorCIDR Range ViewerVLSM CalculatorVLAN PlannerBandwidth CalcIPv6 Subnet CalcIP ↔ BinarySupernet CalcCIDR MergeCIDR to IP RangeCIDR SplitIPv4 → IPv6CIDR OverlapFree IP Space FinderDHCP CalculatorMTU Calculator
WHOIS LookupDomain Age CheckerSubdomain FinderIP GeolocationASN / BGP LookupIP Blacklist CheckReverse IP LookupMAC Address LookupBGP Prefix LookupRPKI / ROA CheckDomain Availability
Email InspectorDKIM CheckerEmail HeadersSMTP TestSMTP TLS CheckMX Health CheckEmail SecurityDMARC Generator
Temp MailSoon
Is It Down?SSL/TLS CheckerOpen Port CheckerOG Tag CheckerOCSP CheckerPing / LatencyHTTP InspectorRedirect ChainCSP AnalyzerTech Stack CheckerBetaTracerouteBetaHTTP/2 + HTTP/3robots.txt ViewerSSL Cert DecoderBanner GrabberWebSocket TesterCORS TesterHTTP TimingStructured DataPWA ManifestSEO Auditor
One-Time SecretHash GeneratorPassword StrengthSecurity.txtCT Log SearchAXFR Zone Test
HTTP Sec ScoreSoon
WebRTC Leak TestIP Reputation
JSON FormatterYAML FormatterBase64 / URL EncodeJWT DecoderRegex TesterUnix TimestampCron BuilderUUID / ULIDPunycode / IDNBase ConverterACL Generator
CSS Unit ConverterColor ToolkitGradient GeneratorcURL BuilderURL ParserURL Encoder/DecoderHTTP Status CodesBox Shadow GenFavicon GeneratorFlex & Gridrobots.txt Tester
Text CompareCase ConverterText CleanerText AnalyzerText TransformerList ToolsLorem GeneratorSlug Generator
Cloud VPC PlannerCloud IP RangeSecurity GroupsIAM AnalyzerK8s CIDR PlannerFirewall BuilderHCL FormatterEgress Cost CalcCloud DNS Zone
VM Cost EstimatorSoon
Proxmox Net ConfigVMware Port GroupHyper-V vSwitchVXLAN VNI PlannerKVM Net ConfigXCP-ng NetworkNSX-T Segment
Disposable Email DetectorPhone InspectorTor Exit NodeVPN/Proxy DetectDomain ReputationTyposquat DetectUsername SearchFavicon Hash
GitHub ActionsDockerfile Gendocker-composeArgoCD AppK8s Manifests
About

© 2026 VLANlab

No login · No ads · No tracking

2.23.fb6d037

ACL Generator

Build Cisco IOS and iptables access control rules visually. Add permit/deny entries and copy the ready-to-paste config.

Examples:
ActionProtocolSourceDestinationPort
10.0.0.0 0.255.255.255
10.0.0.0 0.255.255.255
IOS config
ip access-list extended OUTSIDE_IN
 permit tcp 10.0.0.0 0.255.255.255 any eq 443
 permit tcp 10.0.0.0 0.255.255.255 any eq 80
 deny ip any any

Related Tools

cURL Command Builder

Build HTTP request code from a visual form. Fill in the URL, method, headers, auth and body - get curl, fetch, axios or Python snippets ready to paste.

VLAN Planner

Design your network segmentation - assign VLAN IDs, names, and subnets with live validation and CSV export.

Open Port Checker

Test a specific port, scan 28 common ports, or check which self-hosted services are exposed on any host or IP address - checked from VLANlab global edge servers.

About this tool

ACL Generator builds Cisco IOS extended access control lists and iptables firewall rules from a visual rule table. Add permit and deny entries with protocol, source IP, destination IP, and port -the tool generates the correct syntax for your chosen platform instantly. Use wildcard masks for Cisco IOS (e.g. 10.0.0.0 0.0.0.255 for /24) and CIDR notation for iptables. Rule order matters -entries are matched top to bottom, so place more specific rules before general ones.